Patent ID: 9408215
Filing Date: 2016-08-02
CPC Classification: H01Q,H03F,H04B,H04L,H04W

Claim Text:
1. A backhaul radio for exchanging one or more data interface streams with one or more other backhaul radios, said backhaul radio comprising: a plurality of receive radio frequency (RF) chains, wherein each receive RF chain is configured to convert from a respective one of a plurality of receive RF signals within a receive frequency band to a respective one of a plurality of receive chain output signals; one or more modulator cores, wherein each modulator core is configured to modulate one or more transmit data interface streams to produce one or more of a plurality of transmit symbol streams, and wherein each transmit symbol stream comprises at least a plurality of blocks of symbols; a plurality of transmit radio frequency (RF) chains, wherein each transmit RF chain is configured to convert from a respective one of a plurality of transmit chain input signals to a respective one of a plurality of transmit RF signals within a transmit frequency band; a non-frequency selective transmit path channel multiplexer, interposed between the one or more modulator cores and at least the plurality of transmit RF chains, wherein the non-frequency selective transmit path channel multiplexer is configured to generate the plurality of transmit chain input signals from at least the plurality of transmit symbol streams; a plurality of directive gain antenna elements, wherein each directive gain antenna element is configured to operate over at least both of the transmit frequency band and the receive frequency band; and a plurality of duplexer filters, wherein each duplexer filter comprises at least a receive band-select filter configured to selectively pass RF signals within the receive frequency band and a transmit band-select filter configured to selectively pass RF signals within the transmit frequency band, wherein each duplexer filter is couplable or coupled to at least one of the plurality of directive gain antenna elements, wherein the receive band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of receive RF chains, and wherein the transmit band-select filter of each duplexer filter is couplable or coupled to at least one of the plurality of transmit RF chains; wherein a first number of the plurality of transmit chain input signals exceeds a second number of the plurality of transmit symbol streams; and wherein the non-frequency selective transmit path channel multiplexer is configured to apply respective sets of stream-specific and chain-specific transmit beamforming weights to at least one or more blocks of the plurality of blocks of symbols from the plurality of transmit symbol streams when generating a respective one of the plurality of transmit chain input signals, and wherein a particular one of said stream-specific and chain-specific transmit beamforming weights is invariant with respect to a relative symbol position within said at least one or more blocks of the plurality of blocks of symbols.