Patent ID: 8369376
Filing Date: 2013-02-05
Classification: H04B,H04J

Abstract:
1. A method for communicating a sequence of information symbols between a transmitter and a receiver using a chaotic sequence spread spectrum signal, the method comprising: generating identical sequences of chaotic chips at said transmitter and said receiver, said sequences of chaotic chips synchronized in time; transmitting a sequence of information symbols in a signal using said sequence of chaotic chips generated at said transmitter, each of said information symbols in said signal having a variable duration of transmission that is determined based on a threshold symbol energy value and a cumulative amount of energy resulting from a plurality of chips of said sequence of chaotic chips that were previously used for transmitting a current one of said information symbols; extracting said sequence of information symbols from said transmitted signal, each of said information symbols in said transmitted signal extracted using said sequence of chaotic chips generated at said receiver and said threshold symbol energy value; wherein said duration of transmission of each of said information symbols in said signal is a total duration of a selected number of said chaotic chips used for transmitting each of said information symbols, and wherein said number of said chaotic chips is selected for each of said information symbols to provide a total chip energy that is greater than or equal to said threshold symbol energy value.