Patent ID: 6101213
Filing Date: 2000-08-08
Classification: H04B,H04L

Abstract:
A method for communicating over at least one spread spectrum channel between transmitter and receiver terminals in a wireless network, comprising the steps of:transmitting a synchronization waveform;synchronizing the receiver terminal to said synchronization waveform;transmitting a spread spectrum CWSK data waveform having data encoded by circular-waveform shift-keying, such that a data symbol is encoded in a frame by at least one of a circular time-shift and a circular frequency-shift of a spread spectrum waveform within the frame; anddemodulating said spread spectrum CWSK data waveform at the receiver terminal to extract said data; and whereinsaid synchronization waveform transmitting step transmits a spread spectrum CWSK waveform having a synch symbol encoded by circular-waveform shift-keying, such that a synch symbol is encoded in a frame by at least one of a circular time-shift and a circular frequency-shift of a spread spectrum waveform within the frame.