Patent Description:
A radio communications network can includes a plurality of transceivers configured for half-duplex communication (i.e., either transmitting or receiving data traffic at any given time). The transceivers can be configured to include a multi-channel receiver, enabling the data traffic capacity in the radio communications network to be increased relative to an alternative configuration in which the transceivers include a single-channel receiver. However, this increase in the data traffic capacity is limited. In particular, the increase in the data traffic capacity is minor, at best, when most of the data traffic in the radio communications network is symmetric multi-point to multi-point data traffic having a long transmission interval (e.g., video transmissions, transmissions of real-time large data, etc.).

There is thus a need in the art to significantly increase the data traffic capacity in a radio communications network.

Document <CIT> discloses a system for radio communication. The radio system includes a plurality of radio transceivers and a switch. Each transceiver cannot be used alone to meet an operational requirement. The switch configured to switch between the plurality of transceivers to provide the operational requirement.

Document <CIT> discloses a method of performing self-interference cancellation in the network nodes supporting full-duplex communication.

The invention is as set out in the appended set of claims.

As defined in claim <NUM>, there is provided a radio transceiver, in a radio communications network, that is configured for full-duplex communication over a common frequency band, the transceiver comprising: a multi-channel receiver configured to receive, via at least one receiver antenna, one or more first data frames from a corresponding one or more first nodes of the network during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC); a multi-channel transmitter configured to transmit, via at least one transmitter antenna, one or more second data frames to a corresponding one or more second nodes of the network during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and a controller configured, for a respective first data frame of the first data frames, to use the ECC of the respective first data frame to correct one or more actual self-interference-based errors in the respective first data frame, if any, each of the actual self-interference-based errors resulting from a difference in frequency that is less than a first difference in frequency between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

In some non-claimed cases, the network is a mobile ad-hoc network (MANET).

In some non-claimed cases, the actual self-interference-based errors in the first data frames are statistically dispersed over the first data frames, thereby enabling the ECC of each first data frame of the first data frames to correct the actual self-interference-based errors in the respective first data frame.

In some cases, the controller is further configured, prior to the first time slots, to: obtain, for the respective first data frame, the first frequency channel over which the first data slots of the respective first data frame are to be received; obtain, for each second data frame of the second data frames, the second frequency channel over which the second data slots of the respective second data frame are to be transmitted; determine, for at least some of the first time slots, a given difference in frequency between the first frequency channel over which a respective first data slot of the respective first data frame is to be received during the respective first time slot and at least one respective second frequency channel over which a respective second data slot of a corresponding second data frame of the second data frames is to be transmitted during the respective first time slot, wherein a determination that the given difference is less than the first difference is indicative of at least one expected self-interference-based error in the respective first data slot of the respective first data frame; and estimate a capability of the ECC of the respective first data frame to correct the expected self-interference-based error, if any, wherein the ECC is estimated to be capable of correcting the expected self-interference-based error when a number of the first data slots of the respective first data frame that are expected to include one or more expected self-interference-based errors is less than or equal to a predefined number.

In some cases, upon estimating that the ECC is not capable of correcting the expected self-interference-based-error, the controller is configured to skip a transmission of the respective second data slot, thereby avoiding the expected self-interference-based error in the respective second data slot.

In some non-claimed cases, the controller is further configured to modify a transmission of the corresponding second data frame to indicate that the transmission of the respective second data slot has been skipped.

In some non-claimed cases, the controller is configured to determine the predefined number in accordance with one or more of the following: (a) a type of the ECC; (b) a code rate of the ECC; (c) an expected signal-to-noise ratio (SNR) for the respective first data frame, the expected SNR being estimated based on a measured SNR of data transmissions received by the receiver prior to the first time slots; or (d) an expected effect of radio- frequency interference that is external to the radio transceiver on the multi-channel receiver.

In some cases, the receiver comprises: a reception filter bank, configured to process each of the first data frames based on the first frequency channel thereof, the reception filter hank comprising a plurality of first filters that are associated with distinct frequency channels throughout the common frequency band; and a demodulator configured to demodulate the first data frames.

In some cases, the first filters include at least one of: (a) one or more first bandpass filters, or (b) one or more first notch filters.

In some cases, the transmitter comprises: one or more digital transmission channels configured to modulate each of the second data frames for a transmission thereof over the second frequency channel thereof; and a transmission filter bank configured to process each of the second data frames based on the second frequency channel thereof, the transmission filter hank comprising a plurality of second filters that are associated with the distinct frequency channels.

In some cases, the second filters include at least one of: (a) one or more second bandpass filters, or (b) one or more second notch filters.

In some cases, the receiver further comprises: a self-interference compensation unit configured to compensate for an effect of self-interference on one or more of the first data frames resulting from a transmission of one or more of the second data frames, thereby reducing the first difference.

In some cases, the self-interference compensation unit comprises: a compensation filter bank, coupled to an output of the multi-channel transmitter, and configured to process each of the second data frames based on the second frequency channel thereof, the compensation filter bank comprising a plurality of third filters that are associated with the distinct frequency channels; and a cancellation unit configured, based on the first data frames and the second data frames, to remove components of the second data frames that are present in the first data frames.

In accordance with a non-claimed second aspect of the presently disclosed subject matter, there is provided a radio communications network comprising a plurality of radio transceivers that are configured for full-duplex communication over a common frequency band, each radio transceiver of the radio transceivers comprising: a multi-channel receiver configured to receive, via at least one receiver antenna, one or more first data frames from a corresponding one or more first nodes of the network during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC); a multi-channel transmitter configured to transmit, via at least one transmitter antenna, one or more second data frames to a corresponding one or more second nodes of the network during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and a controller configured, for a respective first data frame of the first data frames, to use the ECC of the respective first data frame to correct one or more actual self-interference-based errors in the respective first data frame, if any, each of the actual self-interference-based errors resulting from a difference in frequency that is less than a first difference between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

As defined in claim <NUM>, there is provided a method for full-duplex communication over a common frequency band, the method comprising: receiving, by a multi-channel receiver of a radio transceiver in a radio communications network, via at least one receiver antenna, one or more first data frames from a corresponding one or more first nodes of the network during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC); transmitting, by a multi-channel transmitter of the radio transceiver, via at least one transmitter antenna, one or more second data frames to a corresponding one or more second nodes of the network during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and for a respective first data frame of the first data frames, using the ECC of the respective first data frame to correct one or more actual self-interference- based errors in the respective first data frame, if any, each of the actual self-interference- based errors resulting from a difference in frequency that is less than a first difference in frequency between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

In some cases, the method further comprises: obtaining, for the respective first data frame, prior to the first time slots, the first frequency channel over which the first data slots of the respective first data frame are to be received; obtaining, for each second data frame of the second data frames, prior to the first time slots, the second frequency channel over which the second data slots of the respective second data frame are to be transmitted; determining, for at least some of the first time slots, a given difference in frequency between the first frequency channel over which a respective first data slot of the respective first data frame is to be received during the respective first time slot and at least one respective second frequency channel over which a respective second data slot of a corresponding second data frame of the second data frames is to be transmitted during the respective first time slot, wherein a determination that the given difference is less than the first difference is indicative of at least one expected self-interference-based error in the respective first data slot of the respective first data frame; and estimating a capability of the ECC of the respective first data frame to correct the expected self-interference- based error, if any, wherein the ECC is estimated to be capable of correcting the expected self-interference-based error when a number of the first data slots of the respective first data frame that are expected to include one or more expected self-interference-based errors is less than or equal to a predefined number.

In some cases, upon estimating that the ECC is not capable of correcting the expected self-interference-based-error, the method further comprises: skipping a transmission of the respective second data slot, thereby avoiding the expected self- interference-based error in the respective second data slot. In some non-claimed cases, the method further comprises: modifying a transmission of the corresponding second data frame to indicate that the transmission of the respective second data slot has been skipped.

In some non-claimed cases, the method further comprises: determining the predefined number in accordance with one or more of the following: (a) a type of the ECC; (b) a code rate of the ECC; (c) an expected signal-to-noise ratio (SNR) for the respective first data frame, the expected SNR being estimated based on a measured SNR of data transmissions received by the receiver prior to the first time slots; or (d) an expected effect of radio- frequency interference that is external to the radio transceiver on the multi-channel receiver.

In some cases, the receiving comprises: processing each of the first data frames based on the first frequency channel thereof, by a reception filter hank comprising a plurality of first filters that are associated with distinct frequency channels throughout the common frequency band; and demodulating the first data frames, by a demodulator.

In some non-claimed cases, the first filters include at least one of: (a) one or more first bandpass filters, or (b) one or more first notch filters.

In some cases, the transmitting comprises: modulating each of the second data frames for a transmission thereof over the second frequency channel thereof, by one or more digital transmission channels; and processing each of the second data frames based on the second frequency channels thereof, by a transmission filter hank comprising a plurality of second filters that are associated with the distinct frequency channels.

In some non-claimed cases, the second filters include at least one of: (a) one or more second bandpass filters, or (b) one or more second notch filters.

In some cases, the receiving further comprises: compensating for an effect of self interference on one or more of the first data frames resulting from a transmission of one or more of the second data frames, thereby reducing the first difference.

In some cases, the compensating comprises: processing each of the second data frames based on the second frequency channel thereof, by a compensation filter bank, coupled to an output of the multi-channel transmitter, the compensation filter hank comprising a plurality of third filters that are associated with the distinct frequency channels; and removing components of the second data frames that are present in the first data frames, based on the first data frames and the second data frames. In accordance with a fourth aspect of the presently disclosed subject matter, there is provided a method for full-duplex communication over a common frequency band in a radio communications network comprising a plurality of radio transceivers, the method comprising: receiving, by at least one multi-channel receiver of a corresponding at least one radio transceiver of the radio transceivers, via a respective at least one receiver antenna, one or more first data frames from a corresponding one or more first nodes of the network during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC); transmitting, by at least one multi-channel transmitter of the corresponding at least one radio transceiver, via a respective at least one transmitter antenna, one or more second data frames to a corresponding one or more second nodes of the network during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and for a respective first data frame of the first data frames, using the ECC of the respective first data frame to correct one or more actual self-interference- based errors in the respective first data frame, if any, each of the actual self-interference- based errors resulting from a difference in frequency that is less than a first difference between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

In accordance with a non-claimed fifth aspect of the presently disclosed subject matter, there is provided a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code, executable by at least one processor of a computer to perform a method for full-duplex communication over a common frequency band, the method comprising: receiving, by a multi-channel receiver of a radio transceiver in a radio communications network, via at least one receiver antenna, one or more first data frames from a corresponding one or more first nodes of the network during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC); transmitting, by a multi-channel transmitter of the radio transceiver, via at least one transmitter antenna, one or more second data frames to a corresponding one or more second nodes of the network during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and for a respective first data frame of the first data frames, using the ECC of the respective first data frame to correct one or more actual self-interference-based errors in the respective first data frame, if any, each of the actual self-interference-based errors resulting from a difference in frequency that is less than a first difference between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

In accordance with a non-claimed sixth aspect of the presently disclosed subject matter, there is provided a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code, executable by at least one processor of a computer to perform a method for full-duplex communication over a common frequency band in a radio communications network comprising a plurality of radio transceivers, the method comprising: receiving, by at least one multi-channel receiver of a corresponding at least one radio transceiver of the radio transceivers, via a respective at least one receiver antenna, one or more first data frames from a corresponding one or more first nodes of the network during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC); transmitting, by at least one multi-channel transmitter of the corresponding at least one radio transceiver, via a respective at least one transmitter antenna, one or more second data frames to a corresponding one or more second nodes of the network during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and for a respective first data frame of the first data frames, using the ECC of the respective first data frame to correct one or more actual self-interference-based errors in the respective first data frame, if any, each of the actual self-interference-based errors resulting from a difference in frequency that is less than a first difference between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the presently disclosed subject matter. However, it will be understood by those skilled in the art that the presently disclosed subject matter may be practiced without these specific details. In other instances, well- known methods, procedures, and components have not been described in detail so as not to obscure the presently disclosed subject matter.

Unless specifically stated otherwise, as apparent from the following discussions, it is appreciated that throughout the specification discussions utilizing terms such as "receiving", "transmitting", "correcting", "obtaining", "determining", "estimating", "skipping", "modifying", "processing", "digitizing", "monitoring", "demodulating", "modulating", "reconstructing", "compensating", "removing" or the like, include actions and/or processes, including, inter alia, actions and/or processes of a computer, that manipulate and/or transform data into other data, said data represented as physical quantities, e.g. such as electronic quantities, and/or said data representing the physical objects. The terms "computer", "processor", "processing circuitry" and "controller" should be expansively construed to cover any kind of electronic device with data processing capabilities, including, by way of non-limiting example, a personal desktop/laptop computer, a server, a computing system, a communication device, a smartphone, a tablet computer, a smart television, a processor (e.g. digital signal processor (DSP), a microcontroller, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), etc.), a group of multiple physical machines sharing performance of various tasks, virtual servers co-residing on a single physical machine, any other electronic computing device, and/or any combination thereof.

As used herein, the phrase "for example," "such as", "for instance" and variants thereof describe non-limiting embodiments of the presently disclosed subject matter. Reference in the specification to "one case", "some cases", "other cases" or variants thereof means that a particular feature, structure or characteristic described in connection with the embodiment(s) is included in at least one embodiment of the presently disclosed subject matter. Thus the appearance of the phrase "one case", "some cases", "other cases" or variants thereof does not necessarily refer to the same embodiment(s).

It is appreciated that, unless specifically stated otherwise, certain features of the presently disclosed subject matter, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the presently disclosed subject matter, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination.

In embodiments of the presently disclosed subject matter, fewer, more and/or different stages than those shown in <FIG>, <FIG>, <FIG>, and <FIG> may be executed. In embodiments of the presently disclosed subject matter one or more stages illustrated in <FIG> and <FIG> may be executed in a different order and/or one or more groups of stages may be executed simultaneously. <FIG>, <FIG>, <FIG>, <FIG> and <FIG> illustrate a general schematic of the system architecture in accordance with an embodiment of the presently disclosed subject matter. Each module in <FIG>, <FIG>, <FIG>, <FIG> and <FIG> can be made up of any combination of software, hardware and/or firmware that performs the functions as defined and explained herein. The modules in <FIG> may be centralized in one location or dispersed over more than one location. In other embodiments of the presently disclosed subject matter, the system may comprise fewer, more, and/or different modules than those shown in <FIG>, <FIG>, <FIG> and <FIG>.

Bearing this is mind, attention is now drawn to <FIG>, a schematic illustration of a radio communications network <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, radio communications network <NUM> can be configured to include a plurality of nodes (e.g., nodes <NUM>-a, <NUM>-b,. , <NUM>-g), being devices in radio communications network <NUM>. In some cases, radio communications network <NUM> can be a Mobile Ad-hoc Network (MANET). Each of the nodes (e.g., <NUM>-a, <NUM>-b,. , <NUM>-g) in the MANET can directly communicate with all other nodes in the MANET and can act as a router for retransmitting packets that are originally transmitted by a different node of the nodes (e.g., <NUM>-a, <NUM>-b,. , <NUM>-g) in the MANET. Alternatively, in some cases, radio communications network <NUM> can be a star network, in which each of the nodes in the radio communications network <NUM> communicate only via an access point that is common to the nodes in the radio communications network <NUM>.

Each node of the nodes (e.g., nodes <NUM>-a, <NUM>-b,. , <NUM>-g) in radio communications network <NUM> is configured to include a respective radio transceiver (not shown in <FIG>) for communicating with other nodes (e.g., nodes <NUM>-a, <NUM>-b,. , <NUM>-g) in radio communications network <NUM>. The respective radio transceiver is configured to have a full-duplex link over a common frequency band, being the frequency band within the radio spectrum that is allocated to the radio communications network <NUM>. That is, the respective radio transceiver is capable of simultaneously transmitting and receiving data, wherein both data transmissions and data receptions by the respective radio transceiver can occur over any one of a plurality of distinct frequency channels that cover the common frequency band. This enables an increase in the total data traffic in radio communications network <NUM>, the total data traffic being the sum of all transmissions by the radio transceivers in the radio communications network <NUM>.

Attention is now drawn to <FIG>, a block diagram schematically illustrating one example of a radio transceiver <NUM> of a given node (e.g., <NUM>-a, <NUM>-b,. , <NUM>-g) in the radio communications network <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, radio transceiver <NUM> can be configured to include a multi-channel receiver <NUM>, a multi-channel transmitter <NUM>, and a digital controller <NUM>. Multi-channel receiver <NUM> can be configured to receive, via at least one receiver antenna <NUM>, an input radio signal. The input radio signal can include one or more first data frames that are received from a corresponding one or more first nodes (e.g., nodes <NUM>-a, <NUM>-b,. , <NUM>-g) in radio communications network <NUM> during a common time period (i.e., concurrently), the common time period including a plurality of first time slots. Each first data frame of the first data frames can include a plurality of first data slots. Each first data slot of the first data slots of a respective first data frame can be received during a different first time slot of the first time slots over a distinct frequency channel within the common frequency band.

Each first data frame of the first data frames can include an error correction code (ECC). In some cases, the ECC in a respective first data frame can be distributed. Additionally, or alternatively, in some cases, the bits in the respective first data frame, including the ECC, can be interleaved, to prevent a local concentration of many errors in the respective first data frame, and thereby improve the error correction capability of the ECC.

Multi-channel transmitter <NUM> can be configured to transmit, via at least one transmitter antenna <NUM>, one or more second data frames to a corresponding one or more second nodes (e.g., nodes <NUM>-a, <NUM>-b,. , <NUM>-g) in radio communications network <NUM> during the common time period. Each second data frame of the second data frames can include a plurality of second data slots. Each second data slot of the second data slots of a respective second data frame can be transmitted during a different first time slot of the first time slots over a distinct frequency channel within the common frequency band. That is, radio transceiver <NUM> can be configured to have a full-duplex link over the common frequency band, thereby enabling an increase in a total data traffic capacity in radio communications network <NUM>. In some cases, there can be overlap between the first and second nodes. Also, in some cases, the at least one receiver antenna <NUM> and the at least one transmitter antenna <NUM> can be the same antenna.

Digital controller <NUM> can be configured to include an ECC encoder <NUM>. Additionally, in some cases, digital controller <NUM> can be configured to include an interleaver (not shown). ECC encoder <NUM> can be configured to encode the information bits in each second data frame of the second data frames with an error correction code (ECC). In some cases, the ECC in a respective second data frame can be distributed. Additionally, or alternatively, in some cases, digital controller <NUM> can be configured to interleave the bits in the respective second data frame, including the ECC, using the interleaver.

A challenge that arises from the full-duplex operation of the radio transceiver <NUM> over the common frequency band is a high likelihood of self-interference at the radio transceiver <NUM>, being the reception by the multi-channel receiver <NUM> of the radio transceiver <NUM> of components of the second data frames that are transmitted by multi channel transmitter <NUM> of the radio transceiver <NUM>. This can result in one or more errors in one or more of the first data frames that are received by multi-channel receiver <NUM>, such errors being referred to hereinafter as self-interference-based errors.

Digital controller <NUM> can be configured to include an ECC decoder <NUM>. ECC decoder <NUM> can be configured to use the ECC in a respective first data frame to correct errors in the respective first data frame, including self-interference-based errors. In some cases, digital controller <NUM> can also be configured to include a deinterleaver (not shown). Deinterleaver can be configured to deinterleave interleaved bits in a respective first data frame prior to the decoding of the respective first data frame by ECC decoder <NUM>.

An additional challenge that arises from the full-duplex operation of the radio transceiver <NUM> over the common frequency band is to minimize control and management traffic at the radio transceiver <NUM> while improving the capability of the ECC in each respective first data frame that is received by multi-channel receiver <NUM> to correct self-interference-based errors in the respective first data frame. To overcome this challenge, for each respective first data frame of the first data frames that are received by multi channel receiver <NUM>, the distinct frequency channel over which the respective first data frame is received (referred to herein, interchangeably, as "the first frequency channel") can be variable between successive first data slots of the first data slots in the respective first data frame. Moreover, the variation in the first frequency channel between the successive first data slots can be achieved by varying the first frequency channel in accordance with a pseudorandom frequency sequence that is based on a given algorithm or one or more given rules.

Both the node (e.g., <NUM>-a, <NUM>-b,. , <NUM>-g) that transmits a respective first data frame and the radio transceiver <NUM> can be aware, prior to the transmission of the respective first data frame, of the given algorithm or the given rules on which the pseudorandom frequency sequence for the respective first data frame is based. In this manner, digital controller <NUM> can be configured, prior to the reception of the first data frames during the common time period, to obtain, for each respective first data frame of the first data frames, the first frequency channel over which the first data slots of the respective first data frame are to be received.

In some cases, the given algorithm or the given rules on which a pseudorandom frequency sequence for the respective first data frame is based can be agreed upon by the node (e.g., <NUM>-a, <NUM>-b,. , <NUM>-g) that transmits the respective first data frame and the radio transceiver <NUM> prior to the transmission of the respective first data frame. The given algorithm or the given rules can result in a pseudorandom frequency sequence for the respective first data frame that appears to be random or that appears not to be random.

Moreover, for each respective second data frame of the second data frames that are transmitted by multi-channel transmitter <NUM>, the distinct frequency channel over which the respective second data frame is transmitted (referred to herein, interchangeably, as "the second frequency channel") can be variable between successive second data slots of the second data slots in the respective second data frame. Moreover, the variation in the second frequency channel between the successive second data slots can be achieved by varying the second frequency channel in accordance with a pseudorandom frequency sequence that is based on a given algorithm or one or more given rules. Both the radio transceiver <NUM> and the node (e.g., <NUM>-a, <NUM>-b, <NUM>-g) that receives a respective second data frame can be aware, prior to the transmission of the respective second data frame, of the given algorithm or the given rules on which the pseudorandom frequency sequence for the respective second data frame is based. In this manner, digital controller <NUM> can be configured, prior to the transmission of the second data frames during the common time period, to obtain, for each respective second data frame of the second data frames, the second frequency channel over which the second data slots of the respective second data frame are to be transmitted.

In some cases, the given algorithm or the given rules on which a pseudorandom frequency sequence for the respective second data frame is based can be agreed upon by the radio transceiver <NUM> and the node (e.g., <NUM>-a, <NUM>-b,. , <NUM>-g) that receives the respective second data frame prior to the transmission of the respective second data frame. The given algorithm or the given rules can result in a pseudorandom frequency sequence for the respective second data frame that appears to be random or that appears not to be random.

In view of the foregoing, the self-interference-based errors in the first data frames can be statistically dispersed over the first data frames, thereby enabling the ECC of each first data frame of the first data frames to correct the self-interference-based errors in the respective first data frame, if any. It is to be noted that each of the self-interference-based errors in a respective first data frame results from a difference in frequency that is less than a first difference between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.

Attention is now briefly drawn to <FIG> is a graph <NUM> that schematically illustrates one example of a frequency profile of a respective first data frame that is received by multi-channel receiver <NUM> during a common time period, in accordance with the presently disclosed subject matter. For the purposes of illustration only, <FIG> illustrates the common time period as including five first time slots (e.g., Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>), and six distinct frequency channels (frequencies fi, Ï2, f3, ft , is, frd within the common frequency band over which respective first data slots of the respective first data frame can be received. <FIG> further illustrates that the first data slots of the respective first data frame are received over the following distinct frequency channels in the following order during the five first time slots (e.g., Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>): frequencies fi, , f3, and f2. As can be seen, the distinct frequency channel (i.e., first frequency channel) over which successive first data slots of the respective first data frame are received is variable between the successive first data slots of the respective first data frame.

<FIG> is a graph <NUM> that schematically illustrates one example of a frequency profile of a respective second data frame that is transmitted by multi-channel transmitter <NUM> during the common time period, in accordance with the presently disclosed subject matter. For the purposes of illustration only, <FIG>, like <FIG>, illustrates the common time period as including five first time slots (e.g., Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>), and six distinct frequency channels (frequencies fi, f2, f3, ft , fs, fo) within the common frequency band over which respective second data slots of the respective second data frame can be transmitted. <FIG> further illustrates that the second data slots of the respective second data frame are transmitted over the following distinct frequency channels in the following order during the five first time slots (e.g., Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>, Slot #<NUM>): frequencies fs, f2, ft, fi and f3. As can be seen, the distinct frequency channel (i.e., the second frequency channel) over which successive second data slots of the respective second data frame are transmitted is variable between the successive second data slots of the respective second data frame.

Returning to <FIG>, in some cases, digital controller <NUM> can be further configured to include an ECC capability estimation module <NUM>. ECC capability estimation module <NUM> can be configured to estimate a capability of the ECC of a respective first data frame to correct expected self-interference-based errors in the respective first data frame, as detailed further herein, inter alia with reference to <FIG>.

Attention is now drawn to <FIG>, a flowchart illustrating one example of a sequence of operations performed by a radio transceiver <NUM> in the radio communications network <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, a multi-channel receiver <NUM> of the radio transceiver <NUM> can be configured to receive, via at least one receiver antenna <NUM>, one or more first data frames from a corresponding one or more first nodes (e.g., nodes <NUM>-a, <NUM>-b, <NUM>-g) of the network <NUM> during a plurality of first time slots (i.e., the co on time period), wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within a common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC) (block <NUM>).

Moreover, a multi-channel transmitter <NUM> of the radio transceiver <NUM> can be configured to transmit, via at least one transmitter antenna <NUM>, one or more second data frames to a corresponding one or more second nodes (e.g., nodes <NUM>-a, <NUM>-b,. , <NUM>-g) of the network <NUM> during the first time slots (i.e., the common time period), wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots (block <NUM>).

A digital controller <NUM> of the radio transceiver <NUM> can be configured, for a respective first data frame of the first data frames, to use the ECC of the respective first data frame to correct one or more self-interference-based errors in the respective first data frame, if any, each of the self-interference-based errors resulting from a difference in frequency that is less than a first difference between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot (block <NUM>).

Attention is now drawn to <FIG>, a flowchart illustrating one example of a sequence of operations performed by the radio transceiver <NUM> to estimate a capability of an ECC of a respective first data frame to correct one or more expected self-interference- based errors in the respective first data frame, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, radio transceiver <NUM> can be configured, e.g., using ECC capability estimation module <NUM>, to estimate a capability of an ECC of a respective first data frame to correct expected self-interference-based errors in the respective first data frame before the multi-channel receiver <NUM> receives the respective first data frame.

To achieve this, before the multi-channel receiver <NUM> receives the respective first data frame (i.e., prior to the first time slots of the common time period), radio transceiver <NUM> can be configured to obtain, for the respective first data frame, the first frequency channel over which the first data slots of the respective first data frame are to be received (block <NUM>).

In addition, radio transceiver <NUM> can be configured, prior to the multi-channel transmitter <NUM> transmitting the second data frames (i.e., prior to the first time slots of the common time period), to obtain, for each second data frame of the second data frames, the second frequency channel over which the second data slots of the respective second data frame are to be transmitted (block <NUM>).

Radio transceiver <NUM> can be configured, e.g., using ECC capability estimation module <NUM>, to determine, for at least some of the first time slots, a given difference in frequency between the first frequency channel over which a respective first data slot of the respective first data frame is to be received during the respective first time slot and at least one (and preferably all) respective second frequency channel over which a respective second data slot of a corresponding second data frame of the second data frames is to be transmitted during the respective first time slot, wherein a determination that the given difference is less than the first difference is indicative of at least one expected self- interference-based error in the respective first data slot of the respective first data frame (block <NUM>).

Radio transceiver <NUM> can be further configured, e.g., using ECC capability estimation module <NUM>, to estimate a capability of the ECC of the respective first data frame to correct the expected self-interference-based error, if any, wherein the ECC is estimated to be capable of correcting the expected self-interference-based error when a number of the first data slots of the respective first data frame that are expected to include one or more expected self-interference-based errors is less than or equal to a predefined number (block <NUM>).

In some cases, radio transceiver <NUM> can be configured, e.g., using digital controller <NUM>, to determine the predefined number in accordance with one or more of the following: (a) a code rate of the ECC; (b) a type of the ECC (e.g., a Convolutional-Turbo- Code (CTC)); (c) an expected signal-to-noise ratio (SNR) for the respective first data frame; or (d) an expected effect of radio-frequency interference that is external to the radio transceiver <NUM> on the multi-channel receiver <NUM>.

In some cases, the expected SNR for the respective first data frame can be estimated based on a measured SNR of data transmissions received by the multi-channel receiver <NUM> prior to the first time slots.

In some cases, upon estimating that the ECC is not capable of correcting the expected self-interference-based-error, radio transceiver <NUM> can be configured, e.g., using digital controller <NUM>, to skip a transmission of the respective second data slot, thereby avoiding the expected self-interference-based error in the respective first data slot of the respective first data frame. By skipping the transmission of the respective second data slot, and consequently reducing self-interference-based errors in the respective first data frame, the successful decoding of the respective first data frame depends especially on a condition of the first frequency channels over which the first data slots of the respective first data frame are received. As such, radio transceiver <NUM> can better support services that require a high degree of certainty that the transmitted data will be successfully received, e.g. services that require a high data rate (video, etc.) or that include real-time big data. It is to be noted that, by skipping the transmission of the respective second data slot, the amount of information that is transmitted in the corresponding second data frame is reduced by the amount of information that was to have been transmitted during the respective second data slot.

In some cases, radio transceiver <NUM> can be further configured, e.g., using digital controller <NUM>, to modify a transmission of the corresponding second data frame (that includes the respective second data slot for which the transmission is to be skipped) to indicate that the transmission of the respective second data slot has been skipped.

Returning to <FIG>, in some cases, multi-channel receiver <NUM> can be configured to include a reception filter hank <NUM>. Reception filter hank <NUM>, which is described in detail further herein, inter alia with reference to <FIG>, <FIG>, <FIG> and <FIG>, can be configured to process (i.e., pass) the first data frames in the input radio signal that is received by the multi-channel receiver <NUM> while filtering out components in the input radio signal resulting from interfering radio signals, including, inter alia, self-interfering radio signals resulting from the transmission of second data frames concurrently to the reception of the input radio signal, as detailed further herein, inter alia with reference to <FIG> and <FIG>.

In some cases, multi-channel receiver <NUM> can be further configured to include a self-interference compensation unit <NUM>. Self-interference compensation unit <NUM> can be configured to compensate for at least some of the interfering radio signals that are present in an input radio signal and not filtered out by the reception filter bank <NUM>, as detailed further herein, inter alia with reference to <FIG>.

In some cases, multi-channel transmitter <NUM> can be configured to include a transmission filter hank <NUM>. Transmission filter hank <NUM>, which is described in detail further herein, inter alia with reference to <FIG>, <FIG>, <FIG> and <FIG>, can be configured to process (i.e., pass) the second data frames that are to be transmitted by multi-channel transmitter <NUM>.

By including a reception filter hank <NUM> and a transmission filter bank <NUM>, radio transceiver <NUM> can be configured to have a full-duplex link. In order for the radio transceiver <NUM> to have a full-duplex link, the first data frequencies over which the first data frames are received at any given time must be different from the second data frequencies over which the second data frames are transmitted at the given time. In some cases, this can be enabled by the reception filter bank <NUM> and the transmission filter hank <NUM>, which each divide the common frequency band into distinct frequency channels that cover the common frequency band, thereby enabling the first data frames to be received over first frequency channels, of the distinct frequency channels, during each respective first time slot of the first time slots, and the second data frames to be transmitted over second frequency channels, of the distinct frequency channels, that are different than the first frequency channels during each corresponding respective first time slot of the first time slots. If the difference in frequency between a first frequency channel over which a respective first data slot of a respective first data frame is received during a respective first time slot and each of the second frequency channels over which respective second data slots of the second data frames are transmitted during the respective first time slot is greater than or equal to a first difference, the effect of self-interference on the respective first data frame will be minor, such that no self-interference-based errors are to be expected in the respective first data slot. Attention is now drawn to <FIG>, a block diagram schematically illustrating a first example of a multi-channel receiver <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, multi channel receiver <NUM> can be configured to include an analog reception filter hank <NUM>, a plurality of receive paths <NUM> (e.g., receive paths <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), a plurality of digital reception channels <NUM> (e.g., reception channels <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), and a demodulator <NUM>.

Analog reception filter hank <NUM> can be coupled to the at least one receiver antenna <NUM> (shown in <FIG>), and can be configured to receive: (a) the input radio signal or (b) a filtered input radio signal that includes components of the input radio signal that are within the common frequency band. Analog reception filter hank <NUM> can be configured to include a plurality of analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>- k), each analog first filter of the analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>- k) being associated with a respective distinct frequency channel of the distinct frequency channels that cover the common frequency band. Analog reception filter hank <NUM> can be configured to process (i.e., pass) the first data frames that are received by the multi channel receiver <NUM> based on the first frequency channels thereof, which, as noted earlier herein, inter alia with reference to <FIG>, are of the distinct frequency channels, while filtering out components in the input radio signal resulting from interfering radio signals, including, inter alia, self-interference components (defined earlier herein, inter alia with reference to <FIG>). In some cases, one or more of the analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be analog first bandpass filters that are associated with one or more of the distinct frequency channels. Additionally, or alternatively, in some cases, one or more of the analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be analog first notch filters that are associated with one or more of the distinct frequency channels.

A plurality of receive paths <NUM> can be coupled to an output of analog reception filter hank <NUM>. Each receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the receive paths <NUM> can be configured to include an analog-to-digital converter (ADC) (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d). The ADC's in the receive paths <NUM> can be configured to digitize the first data frames. Moreover, in some cases, each receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the receive paths <NUM> can be configured to include at least one amplification circuit. In some cases, the amplification circuit can be configured to include a low-noise amplifier (LNA) (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), as illustrated in <FIG>.

In some cases (not as illustrated in <FIG>), a number of the receive paths <NUM> that are coupled to the output of analog reception filter hank <NUM> can correspond to the number of first filters in analog reception filter bank <NUM>, such that, at any given time, each respective first data frame is digitized by a different ADC of the ADC's. Alternatively, in some cases, as illustrated in <FIG>, the number of receive paths <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) that are coupled to the output of analog reception filter hank <NUM> can be less than the number of first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) in analog reception filter bank <NUM>. In such cases, as illustrated in <FIG>, an analog/radio-frequency (RF) reception switch matrix <NUM> can be coupled between analog reception filter hank <NUM> and receive paths <NUM> to route the outputs of analog reception filter bank <NUM> to the appropriate receive paths <NUM>, in accordance with the frequencies of the first data frames to be processed.

A plurality of digital reception channels <NUM> can be coupled to an output of the receive paths <NUM>, and configured to process the first data frames. Each digital reception channel (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the digital reception channels <NUM> can process an output of a distinct ADC (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the ADC's.

Demodulator <NUM> can be configured to demodulate the first data frames.

Attention is now drawn to <FIG>, a block diagram schematically illustrating a second example of a multi-channel receiver <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, multi channel receiver <NUM> can be configured to include one or more radio-frequency (RF) band filters <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), one or more receive paths <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), one or more digital reception channels <NUM> (e.g., reception channels <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), a digital reception filter hank <NUM>, and a demodulator <NUM>.

In some cases (not as illustrated in <FIG>), a single band filter <NUM> can be coupled to the at least one receiver antenna <NUM> (shown in <FIG>). The band filter <NUM> can be configured to receive the input radio signal, and to output components of the input radio signal that are within the common frequency band. A single receive path <NUM> can be coupled to the band filter <NUM>. The single receive path <NUM> can be configured to include a single wideband ADC <NUM> that digitizes all of the first data frames. Moreover, in some cases, the single receive path <NUM> can be configured to include at least one amplification circuit. In some cases, the amplification circuit can be configured to include a low-noise amplifier (LNA) <NUM>.

A single digital reception channel <NUM> can be coupled to an output of the single receive path <NUM>, and configured to process the digitized radio signals that are output by the single receive path <NUM>.

Digital reception filter hank <NUM> can be coupled to an output of the single digital reception channel <NUM> to split the digitized radio signals into distinct frequency channels that cover the common frequency band. Digital reception filter hank <NUM> can be configured to include a plurality of digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), each digital first filter of the digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) being associated with a respective distinct frequency channel of the distinct frequency channels that cover the common frequency band. Digital reception filter hank <NUM> can be configured to process (i.e., pass) the first data frames based on the first frequency channels thereof, which, as noted earlier herein, inter alia with reference to <FIG>, are of the distinct frequency channels, while filtering out components in the digitized radio signals resulting from interfering radio signals, including, inter alia, self interference components (defined earlier herein, inter alia with reference to <FIG>). In some cases, one or more of the digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital first bandpass filters that are associated with one or more of the distinct frequency channels. Additionally, or alternatively, in some cases, one or more of the digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital first notch filters that are associated with one or more of the distinct frequency channels.

In some cases, as illustrated in <FIG>, a plurality of band filters <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) can be coupled to the at least one receiver antenna <NUM> (shown in <FIG>). The band filters <NUM> can be configured to receive the input radio signals (e.g., via a RF front end). Each band filter (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the band filters <NUM> can be configured to process (i.e., pass) the input radio signals that are received by multi channel receiver <NUM> within a distinct sub-band of the common frequency band, the distinct sub-band including a plurality of distinct frequency channels. A plurality of receive paths <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) can be coupled to an output of the band filters <NUM>. Each receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the receive paths <NUM> can be coupled to an output of a respective band filter (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the band filters <NUM>. Each receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the receive paths <NUM> can be configured to include a respective ADC (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) that digitizes the first data frames that are output by the respective band filter (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) to which it is coupled. Moreover, in some cases, each receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) can be configured to include at least one amplification circuit. In some cases, the amplification circuit can be configured to include a low-noise amplifier (LNA) (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) that precedes the respective ADC (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) in the respective receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d).

A plurality of digital reception channels <NUM> can be coupled to an output of the receive paths <NUM>. Each digital reception channel (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the digital reception channels <NUM> can be coupled to an output of a respective receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the receive paths <NUM>, and configured to process the digitized radio signals that are output by the respective receive path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d).

In some cases, multi-channel receiver <NUM> can be configured to include a digital reception channel switch matrix <NUM> that routes the outputs of the respective digital reception channels <NUM> to appropriate digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) in digital reception filter bank <NUM>, the digital reception filter bank <NUM> being described earlier herein. The digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be configured to process (i.e., pass) the first data frames that are output by the digital reception channels <NUM> based on the first frequency channels thereof, while filtering out components in the digitized radio signals output by the digital reception channels <NUM> that result from interfering radio signals, including, inter alia, self-interference components (defined earlier herein, inter alia with reference to <FIG>).

Demodulator <NUM> can be coupled to an output of the digital reception filter hank <NUM>, and configured to demodulate the first data frames that are processed by the digital reception filter hank <NUM>. In some cases (not as illustrated in <FIG> and <FIG>), multi-channel receiver <NUM> can be configured to not include an analog reception filter bank <NUM> or a digital reception filter bank <NUM>. Rather, multi-channel receiver <NUM> can be configured to include a single receive path <NUM>, a single digital reception channel <NUM>, and a plurality of digital filters that are coupled to an output of the single digital reception channel <NUM>, wherein each digital filter of the digital filters can be configured to process a respective plurality of distinct frequency channels within the common frequency band. In this case, the full- duplex link can still be achieved by including self-interference compensation unit <NUM> in the multi-channel receiver <NUM>.

Attention is now drawn to <FIG>, a block diagram schematically illustrating a first example of a multi-channel transmitter <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, multi channel transmitter <NUM> can be configured to include one or more digital transmission channels <NUM> (e.g., transmission channels <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), one or more transmit paths <NUM> (e.g., transmit paths <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), and analog transmission filter bank <NUM>.

Digital transmission channels <NUM> can be configured to modulate the second data frames for a transmission thereof over second frequency channels of the distinct frequency channels covering the common frequency band. Each digital transmission channel (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the digital transmission channels <NUM> can be configured, at any given time, to modulate a respective second data frame of the second data frames to be transmitted.

In some cases, as illustrated in <FIG>, transmit paths <NUM> can be coupled to an output of the digital transmission channels <NUM>. Moreover, in some cases, as illustrated in <FIG>, each transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM> can be coupled to an output of a distinct digital transmission channel (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the digital transmission channels <NUM>. Alternatively, in some cases (not as illustrated in <FIG>), each transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM> can be coupled to an output of a plurality of digital transmission channels <NUM>, via, for example, a digital transmission channel switch matrix (not shown) that routes each of the second data frames that are output by the digital transmission channels <NUM> to an appropriate transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM>. As a further alternative, in some cases (not as illustrated in <FIG>), a single transmit path <NUM> can be coupled to an output of one or more digital transmission channels <NUM>.

Each transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM> can be configured to include a digital-to-analog converter (DAC) (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d). The DAC's in the transmit paths <NUM> can be configured to reconstruct the second data frames (i.e., convert the digital second data frames that are output by the digital transmission channels <NUM> to analog second data frames). In some cases, each transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM> can also be configured to include at least one respective amplification circuit (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d). In some cases, the respective amplification circuit (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) can follow its corresponding DAC (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), as illustrated in <FIG>.

Analog transmission filter hank <NUM> can be configured to include a plurality of analog second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), each analog second filter of the analog second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) being associated with a respective distinct frequency channel of the distinct frequency channels that cover the common frequency band. Analog transmission filter hank <NUM> can be configured to process (i.e., pass) the second data frames that are to be transmitted by multi-channel transmitter <NUM> based on the second frequency channels thereof, which, as noted earlier herein, inter alia with reference to <FIG>, are of the distinct frequency channels. In some cases, one or more of the analog second filters can be analog second bandpass filters that are associated with one or more of the distinct frequency channels. Additionally, or alternatively, in some cases, one or more of the analog second filters can be analog second notch filters that are associated with one or more of the distinct frequency channels.

In some cases (not as illustrated in <FIG>), a number of the transmit paths <NUM> can correspond to a number of the second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) in analog transmission filter hank <NUM>, such that, at any given time, each respective second data frame is reconstructed by a different DAC of the DAC's. Alternatively, in some cases, as illustrated in <FIG>, the number of transmit paths <NUM> can be one or more, and less than the number of second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) in analog transmission filter hank <NUM>. In some such cases, in which there are a plurality of transmit paths <NUM> that are less than the number of second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-k), an analog/RF transmission switch matrix <NUM> can be configured to route the outputs of the transmit paths <NUM> to the appropriate second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) for further processing.

In some cases, as illustrated in <FIG>, multi-channel transmitter <NUM> can be configured to include a power amplifier (PA) <NUM> that is coupled to the at least one transmitter antenna <NUM> (shown in <FIG>). PA <NUM> can be configured to amplify the second data frames prior to the transmission thereof. Alternatively, in some cases, multi channel transmitter <NUM> can be configured to not include a PA <NUM>, such that the at least one transmitter antenna <NUM> is coupled directly to the analog transmission filter hank <NUM>. In such cases, all of the transmission power can be achieved by the power amplifiers AMPs (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) in the transmit paths <NUM>. This configuration can achieve less interference between the second frequency channels of the second data frames, due to the filtering of the second frequency channels following all of the amplification of the second data frames.

Attention is now drawn to <FIG>, a block diagram schematically illustrating a second example of a multi-channel transmitter <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, multi channel transmitter <NUM> can be configured to include one or more digital transmission channels <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), a digital transmission filter hank <NUM>, and one or more transmit paths <NUM> (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d).

In some cases, as illustrated in <FIG>, digital transmission filter bank <NUM> can be integrated with the digital transmission channels <NUM>. Digital transmission filter hank <NUM> can be configured to include a plurality of digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), each digital second filter of the digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. <NUM>-k) being associated with a respective distinct frequency channel of the distinct frequency channels that cover the common frequency band. Digital transmission filter hank <NUM> can be configured to process (i.e., pass) the second data frames that are to be transmitted by multi-channel transmitter <NUM> based on the second frequency channels thereof, which, as noted earlier herein, inter alia with reference to <FIG>, are of the distinct frequency channels. Specifically, an output of each respective transmission channel (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) can be routed to an appropriate digital second filter(s) of the digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) to process the second data frames that are to be transmitted.

In some cases, one or more of the digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital second bandpass filters that are associated with one or more of the distinct frequency channels. Additionally, or alternatively, in some cases, one or more of the digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital second notch filters that are associated with one or more of the distinct frequency channels.

In some cases (not as illustrated in <FIG> and <FIG>), multi-channel transmitter <NUM> can be configured to not include an analog transmission filter hank <NUM> or a digital transmission filter bank <NUM>. Rather, multi-channel transmitter <NUM> can be configured to include a plurality of digital filters that are integrated with the digital transmission channels <NUM>, a respective digital filter of the digital filters being capable of processing a plurality of second data frames that are output by the digital transmission channels <NUM>. In this case, the full-duplex link can still be achieved by including self-interference compensation unit <NUM> in the multi-channel receiver <NUM>.

In some cases, as illustrated in <FIG>, transmit paths <NUM> can be coupled to an output of the digital transmission filter bank <NUM> or to an output of the digital filters. Each transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM> can be configured to include a digital-to-analog converter (DAC) (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d). The DAC's in the transmit paths <NUM> can be configured to reconstruct the second data frames (i.e., convert the digital second data frames that are output by the digital transmission filter bank <NUM> (or digital filters) to analog second data frames). In some cases, each transmit path (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the transmit paths <NUM> can also be configured to include at least one respective amplification circuit (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d). In some cases, the respective amplification circuit (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) can follow its corresponding DAC (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), as illustrated in <FIG>.

In some cases, as illustrated in <FIG>, multi-channel transmitter <NUM> can be configured to include a plurality of transmit paths <NUM> that are less than a number of second digital filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k). In such cases, multi channel transmitter <NUM> can be configured to include a digital transmission switch matrix <NUM> that is configured to route the outputs of the second digital filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) to the appropriate transmit paths <NUM>.

In some cases (not as illustrated in <FIG>), multi-channel transmitter <NUM> can be configured to include a single transmit path <NUM>, in which case the transmit path <NUM> can be directly coupled to an output of digital transmission filter hank <NUM> (or digital filters), i.e. not via a digital transmission switch matrix <NUM>.

In some cases, as illustrated in <FIG>, multi-channel transmitter <NUM> can be configured to include a power amplifier (PA) <NUM> that is coupled to the at least one transmitter antenna <NUM> (shown in <FIG>). PA <NUM> can be configured to amplify the second data frames prior to the transmission thereof. Alternatively, in some cases, multi channel transmitter <NUM> can be configured to not include a PA <NUM>, such that the at least one transmitter antenna <NUM> is coupled directly to the transmit paths <NUM>. In such cases, all of the transmission power can be achieved by the power amplifiers AMPs (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) in the transmit paths <NUM>.

Attention is now drawn to <FIG>, a flowchart illustrating a first example of a sequence of operations <NUM> performed by multi-channel receiver <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, multi channel receiver <NUM> can be configured, using analog reception filter bank <NUM>, to process the first data frames that are received by the multi-channel receiver <NUM> based on the first frequency channels thereof, the analog reception filter hank <NUM> comprising a plurality of analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) that are associated with distinct frequency channels throughout the common frequency band (block <NUM>). In some cases, one or more of the analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be analog first bandpass filters. Additionally, or alternatively, in some cases, one or more of the analog first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be analog first notch filters.

Multi-channel receiver <NUM> can be further configured, using a plurality of analog- to-digital converters (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), to digitize the first data frames
(block <NUM>).

Multi-channel receiver <NUM> can be further configured, using a demodulator <NUM>, to demodulate the first data frames (block <NUM>).

Attention is now drawn to <FIG>, a flowchart illustrating a second example of a sequence of operations <NUM> performed by multi-channel receiver <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, multi channel receiver <NUM> can be configured, using one or more band filters <NUM>, to provide (i.e., pass) the input radio signals in the common frequency band (block <NUM>). In some cases, multi-channel receiver <NUM> can be configured to include a plurality of band filters <NUM>, each band filter (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d) of the band filters <NUM> providing (i.e., passing) the input radio signals that are in a distinct sub-band of the common frequency band.

Multi-channel receiver <NUM> can be further configured, using one or more analog- to-digital converters (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), to convert at least some of the input radio signals that are provided by the band filters <NUM> to digital input radio signals
(block <NUM>).

Moreover, multi-channel receiver <NUM> can be configured, using digital reception filter bank <NUM>, to process the digital input radio signals that are associated with the first data frames based on the first frequency channels thereof, the digital reception filter hank <NUM> comprising a plurality of digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) that are associated with distinct frequency channels throughout the common frequency band (block <NUM>). In some cases, one or more of the digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital first bandpass filters. Additionally, or alternatively, in some cases, one or more of the digital first filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital first notch filters.

Multi-channel receiver <NUM> can further be configured, using a demodulator <NUM>, to demodulate the first data frames (block <NUM>). Attention is now drawn to <FIG>, a flowchart illustrating a first example of a sequence of operations performed by multi-channel transmitter <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, multi-channel transmitter <NUM> can be configured, using one or more digital transmission channels <NUM>, to modulate the second data frames for a transmission thereof over the second frequency channels (block <NUM>).

Multi-channel transmitter <NUM> can also be configured, using one or more digital- to-analog converters (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d), to convert the second data frames to analog second data frames (block <NUM>).

In some cases, multi-channel transmitter <NUM> can be configured to process the analog second data frames based on the second frequency channels thereof, using an analog transmission filter hank <NUM>, the analog transmission filter bank <NUM> comprising a plurality of analog second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) that are associated with the distinct frequency channels (block <NUM>). In some cases, one or more of the analog second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be analog second bandpass filters. Additionally, or alternatively, in some cases, one or more of the analog second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be analog second notch filters.

Attention is now drawn to <FIG>, a flowchart illustrating a second example of a sequence of operations performed by multi-channel transmitter <NUM>, in accordance with the presently disclosed subject matter.

In some cases, multi-channel transmitter <NUM> can be configured to process the second data frames based on the second frequency channels thereof, using a digital transmission filter hank <NUM>, the digital transmission filter hank <NUM> comprising a plurality of digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) that are associated with the distinct frequency channels (block <NUM>). In some cases, one or more of the digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be digital second bandpass filters. Additionally, or alternatively, in some cases, one or more of the digital second filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c, <NUM>-k) can be digital second notch filters.

Attention is now drawn to <FIG>, a block diagram schematically illustrating a first example of a self-interference compensation unit <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, multi-channel receiver <NUM> can be configured, in some cases, to include a self-interference compensation unit <NUM>. Self-interference compensation unit <NUM> can be configured to compensate for an effect of self-interference on a quality of reception of the first data frames. As a result thereof, the first difference between a first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot that results in an expectation of a self-interference-based error in the respective first data slot is reduced.

In some cases, self-interference compensation unit <NUM> can be configured to include a compensation filter hank <NUM>, at least one second ADC (ADC2) (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), and a digital cancellation unit <NUM>.

Compensation filter hank <NUM> can be configured to include a plurality of third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), each third filter of the third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) being associated with a respective distinct frequency channel of the distinct frequency channels that cover the common frequency band. Compensation filter hank <NUM> can be configured to process (i.e., pass) the second data frames that are transmitted by the multi-channel transmitter <NUM> based on the second frequency channels thereof, which, as noted earlier herein, inter alia with reference to <FIG>, are of the distinct frequency channels. In some cases, one or more of the third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be bandpass filters. Additionally, or alternatively, in some cases, one or more of the third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be notch filters. It is to be noted that, in some cases, compensation filter hank <NUM> can be a digital compensation filter bank, and not an analog compensation filter hank that filters RF signals, as illustrated in <FIG>. That is, the compensation filter hank <NUM> can be configured to process the second data frames after the second data frames have been digitized by the at least one second ADC (ADC2). Alternatively, in some cases, the third filters can be a plurality of digital filters that are not part of a compensation filter hank <NUM>.

Returning to <FIG>, the at least one second ADC (ADC2) (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can be configured to digitize the second data frames.

In some cases, as illustrated in <FIG>, a number of the second ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) can correspond to the number of third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) in compensation filter hank <NUM>, such that, at any given time, each respective second data frame is digitized by a different second ADC (ADC2) (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) of the second ADC's. Alternatively, in some cases, a single second ADC can be configured to digitize all of the second data frames. As a further alternative, a plurality of second ADC's can be coupled to an output of the compensation filter hank <NUM>, wherein the number of second ADC's is less than the number of third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) in compensation filter hank <NUM>.

Digital cancellation unit <NUM> can be configured to compensate for an effect of self-interference on a quality of reception of one or more of the first data frames resulting from a transmission of one or more of the second data frames. In some cases, as illustrated in <FIG>, digital cancellation unit <NUM> can be configured to obtain digitized input radio signals that are output by the first ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k). Digital cancellation unit <NUM> can be further configured to obtain digitized second data frames transmitted over second frequency channels and output by the second ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k). Digital cancellation unit <NUM> can then be configured to remove the digitized components of the second data frames that are output by the first ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), using the digitized second data frames that are output by the second ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k). In this manner, the effect of self-interference on a quality of reception of one or more of the first data frames resulting from a transmission of one or more of the second data frames can be compensated. In some cases, the digital cancellation unit <NUM> can be configured to remove the digitized components of the second data frames by: (a) estimating the amplitude and phase shift associated with the second data frames in the digitized input radio signals that are output by the first ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. <NUM>-k); (b) generating leakage signals by multiplying the digitized second data frames output by the second ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) by the estimated amplitude and shifting the phase of the digitized second data frames by the estimated phase shift; and (c) subtracting the leakage signals from the digitized input radio signals.

Attention is now drawn to <FIG>, a block diagram schematically illustrating a second example of a self-interference compensation unit <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, in some cases, self interference compensation unit <NUM> can be configured to include a compensation filter hank <NUM> and an analog cancellation unit <NUM>. The compensation filter hank <NUM> is described earlier herein, inter alia with reference to <FIG>.

Analog cancellation unit <NUM> can be configured to compensate for self interference at one or more of the first data frames resulting from a transmission of one or more of the second data frames. In some cases, analog cancellation unit <NUM> can be configured to obtain input radio signals, either before filtering the input radio signals by analog reception filter hank <NUM> or after filtering the input radio signals by the analog reception filter hank <NUM> (optionally, after amplification of the filtered input radio signals by the LNA's (e.g. <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k), as illustrated in <FIG>). Analog cancellation unit <NUM> can be further configured to obtain second data frames having second frequencies that are output by the compensation filter hank <NUM>. Analog cancellation unit <NUM> can then be configured to remove the components of the second data frames in the input radio signals, using the second data frames that are output by the compensation filter hank <NUM>, thereby generating compensation signals. In this manner, the self-interference at one or more of the first data frames resulting from a transmission of one or more of the second data frames can be compensated. In some cases, in which the input radio signals are received by analog cancellation unit <NUM> before filtering the input radio signals by analog reception filter hank <NUM>, the compensation signals can be provided to the analog reception filter hank <NUM>. Alternatively, in some cases, in which the input radio signals are received by analog cancellation unit <NUM> after filtering the input radio signals by the analog reception filter hank <NUM>, the compensation signals can be provided to the ADC's (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. <NUM>-k), as illustrated in <FIG>.

Attention is now drawn to <FIG>, a flowchart illustrating one example of a sequence of operations performed by a self-interference compensation unit <NUM>, in accordance with the presently disclosed subject matter.

In accordance with the presently disclosed subject matter, self-interference compensation unit <NUM> can be configured, e.g. using a compensation filter hank <NUM>, coupled to an output of the multi-channel transmitter <NUM>, to process the second data frames prior to the transmission thereof based on the second frequency channels thereof, the compensation filter bank <NUM> comprising a plurality of third filters (e.g., <NUM>-a, <NUM>-b, <NUM>-c,. , <NUM>-k) that are associated with the distinct frequency channels in the common frequency band (block <NUM>). In some cases, compensation filter bank <NUM> can be an analog compensation filter bank, as illustrated for example in <FIG> and <FIG>. Alternatively, in some cases, compensation filter hank <NUM> can be a digital compensation filter bank, as detailed earlier herein, inter alia with reference to <FIG>.

Moreover, self-interference compensation unit <NUM> can be configured, using a cancellation unit (e.g., digital cancellation unit <NUM>, analog cancellation unit <NUM>), to remove components of the second data frames that are present in the first data frames, based on the first data frames and the second data frames (block <NUM>).

It is to be noted that, with reference to <FIG>, <FIG>, <FIG> and <FIG>, some of the blocks can be integrated into a consolidated block or can be broken down to a few blocks and/or other blocks may be added. Furthermore, in some cases, the blocks can be performed in a different order than described herein. It is to be further noted that some of the blocks are optional. It should be also noted that whilst the flow diagram is described also with reference to the system elements that realizes them, this is by no means binding, and the blocks can be performed by elements other than those described herein.

It is to be understood that the presently disclosed subject matter is not limited in its application to the details set forth in the description contained herein or illustrated in the drawings. The presently disclosed subject matter is capable of other embodiments and of being practiced and carried out in various ways. Hence, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for designing other structures, methods, and systems for carrying out the several purposes of the present presently disclosed subject matter.

Claim 1:
A radio transceiver (<NUM>), in a radio communications network (<NUM>), that is configured for full-duplex communication over a common frequency band, the transceiver (<NUM>) comprising:
a multi-channel receiver (<NUM>) configured to receive, via at least one receiver antenna (<NUM>), one or more first data frames from a corresponding one or more first nodes (<NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d, <NUM>-e, <NUM>-f, <NUM>-g) of the network (<NUM>) during a plurality of first time slots, wherein each first data frame of the first data frames includes: (a) a plurality of first data slots, each first data slot of the first data slots being received during a different first time slot of the first time slots over a first frequency channel, within the common frequency band, that is variable between successive first data slots of the first data slots, and (b) an error correction code (ECC);
a multi-channel transmitter (<NUM>) configured to transmit, via at least one transmitter antenna (<NUM>), one or more second data frames to a corresponding one or more second nodes (<NUM>-a, <NUM>-b, <NUM>-c, <NUM>-d, <NUM>-e, <NUM>-f, <NUM>-g) of the network (<NUM>) during the first time slots, wherein each second data frame of the second data frames includes: a plurality of second data slots, each second data slot of the second data slots being transmitted during a different first time slot of the first time slots over a second frequency channel, within the common frequency band, that is variable between successive second data slots of the second data slots; and
a controller (<NUM>) configured, for a respective first data frame of the first data frames, to use the ECC of the respective first data frame to correct one or more actual self-interference-based errors in the respective first data frame, if any, each of the actual self-interference-based errors resulting from a difference in frequency that is less than a first difference in frequency between the first frequency channel over which a respective first data slot of the respective first data frame is received during a respective first time slot of the first time slots and the second frequency channel over which at least one respective second data slot of at least one of the second data frames is transmitted during the respective first time slot.