Patent ID: 7839900
Filing Date: 2010-11-23
Classification: H04B

Abstract:
1. An improved spread-spectrum transceiver comprising: a transceiver configured to transmit a signal comprising a modulated waveform having symbol modulating parameters and a symbol data rate; the transceiver having a symbol rate scaling mode module configured to change the symbol data rate from a preexisting symbol data rate; the transceiver further configured to transmit a modulated waveform that is a spread-spectrum signal; the transceiver further configured to operate with a plurality of frequency channels to communicate with a plurality of other transceivers, each of the channels in the transceiver having a preexisting symbol data rate of a designated frequency bandwidth; and the symbol rate scaling mode module in the transceiver further configured to reduce the symbol data rate from the preexisting symbol data rate by a scaling factor less than one, and reduce the designated frequency bandwidth for at least one the channels to a smaller frequency bandwidth, wherein the scaling factor is a multiple of one over the power of two, the symbol rate scaling mode module is software in a Software Defined Radio (SDR) and the spread spectrum signal transmitted by the transceiver is a frequency hopped spread spectrum signal, the transmission is a randomized asynchronous transmission, the plurality of other transceivers, each operating a plurality of channels, comprises a plurality of nodes in a network, the nodes communicating with one another in a packet switching network, the other transceivers in the plurality of nodes having a software module to increase the hop set, the software module configured to improve the rate of successful packet receptions per packet transmission attempt and reducing the likelihood of collision for two given packets transmitted at the same time, and the software module further configured to transmit in a burst mode, and upon detection of simultaneous channels in the plurality of channels, to vary the symbol rate according to the size of the channel, and wherein the transceiver symbol rate scaling mode module is configured to dynamically reduce the symbol data rate at any point in time, in real-time, wherein the channel access of said channels is SPMA.