Self-correlating pseudo-noise pairing

Details Self-correlating pseudo-noise pairing Self-correlating pseudo-noise pairing

2004-03-25

2008-11-04

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S295000, C375S296000, C375S316000, C375S143000, C375S367000, C375S147000, C375S149000, C375S152000, C375S346000

Reexamination Certificate

active

07447254

ABSTRACT:
A method of transmitting communications codes is used in spread spectrum communications systems. The method includes transmitting a first pseudo-noise code, and transmitting a second pseudo-noise code, wherein the second pseudo-noise code is a time-reversed version of the first pseudo-noise code. A device includes a first shift register to store a first code and a second register to store a second code in a time-reversed version. A comparison circuit then compares the two codes and a result is output.

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