Patent ID: 7974413
Filing Date: 2011-07-05
Classification: H04B,H04J

Abstract:
1. A method for coherently modulating and demodulating a chaotic sequence spread spectrum signal within a communication system, comprising: channel encoding, by a transmitter of said communication system, a carrier with a plurality of information symbols; generating an identical string of discrete time chaotic samples at said transmitter and a receiver of said communication system by modulating, at said transmitter, said carrier in a chaotic manner using said string of discrete time chaotic samples, each of said discrete time chaotic samples having a shorter sample time interval than a duration of said plurality of information symbols; utilizing, at said transmitter, an accurate time reference to minimize a timing difference uncertainty between each said string of discrete time chaotic samples generated at said transmitter and said receiver; synchronizing, at said receiver, each said string of discrete time chaotic samples in time and frequency; and maintaining synchronization of said string of discrete time chaotic samples in time and frequency at each said transmitter and said receiver for a duration of an information transfer.