04606039 is referenced by 92 patents and cites 6 patents.

In a process for coding of radio transmissions by spectrum spreading, a signal is phase modulated by means of a 0-pi modulator controlled by a psuedo random sequence formed by combining in accordance with a logical majority function an odd number of elementary codes constituted by pseudo random binary sequences of different lengths. On reception, the synchronization of the code which controls the demodulator is realized by correlating each of the elementary codes with the received signal.

Title
Spread spectrum coding method and apparatus
Application Number
6/629510
Publication Number
4606039
Application Date
July 10, 1984
Publication Date
August 12, 1986
Inventor
Bruno R Sebilet
Suresnes
FR
Michel J R Nicolas
Paris
FR
Agent
Oblon Fisher Spivak McClelland & Maier
Assignee
Societe Nationale d Etudes et de Construction de Moteurs d Aviation S N E C M A
FR
IPC
H04B 15/00
H04L 9/02
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