PN code synchronizing method and transmitter and receiver in spr

Details PN code synchronizing method and transmitter and receiver in spr PN code synchronizing method and transmitter and receiver in spr

1994-12-22

1997-11-18

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

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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