Patent ID: 7076007

Claim:
A spectrum spreading data transmission process in which: a step of sending, including building up symbols to be sent from data to be transmitted, and modulating said symbols by spectrum spreading using pseudo-random sequences, a step of receiving, including correlating a received signal with the pseudo-random sequences used in sending, identifying the sent symbols, and restoring the data, the process comprising: a) in said sending step: v) building up a set of S successive different pseudo-random sequences, in which S is greater than or equal to at least 2, vi) grouping the symbols to be transmitted into packets each containing S successive symbols, vii) modulating the S successive symbols by one of the set of S successive different pseudo-random sequences, viii) repeating said step of modulating for successive packets with a remaining one of the set of S successive different pseudo-random sequences, the pseudo-random sequences in the set thus being used repetitively, b) in said receiving step: correlating the received signal with each of the S pseudo-random sequences used in the sending step, restoring the successive packets of symbols and corresponding data.