PN code synchronizing method and transmitter and receiver in spr

Pulse or digital communications – Repeaters – Testing

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H04L 2730

Patent

active

056895240

ABSTRACT:
A PN code synchronizing method in spread spectrum communication systems of the present invention calculates a matrix H based on tap locations of a PN code generating shift register, also calculates an internal status of the PN code generating shift register at a time t+M by multiplying an internal status of the PN code generating shift register at a time t by M-th power of the matrix H, and transmits the internal status of the PN code generating shift register at a time t+M to reception side through a synchronous channel. in reception side, a PN code generating shift register therein is set based on the internal status of the PN code generating shift register at a time t+M.

REFERENCES:
patent: 5103459 (1992-04-01), Gilhousen et al.
Becker, Henry and Fred Piper "Cipher Systems, Protection of Communications", Northwood Publications, 1982, London GB.

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