Communication device with code sequence selection system

Details Communication device with code sequence selection system Communication device with code sequence selection system

1993-02-01

1994-09-06

Cangialosi, Salvatore

Pulse or digital communications

Repeaters

Testing

H04L 900, H04L 2710

Patent

active

053454693

ABSTRACT:
A code division multiple access (CDMA) communication system (10) having a plurality of spreading codes including a control code includes a first communication device (100) and a second communication device (106). The first communication device is adapted for transmitting a signal spread by the control code inclusive of a request for an optimum spreading code. The second communication device (106) includes a receiver (202) and an adaptable match filter (204) for identifying the optimum spreading code. A transmitter (2024) transmits information about the spreading code to the first communication device 100. With the information on the optimum spreading code available, the first communication device (100) and the second communication device (106) continue to communicate with each other. The optimum spreading code is periodically updated by the first communication device (100) and second communication device (106) to provide for changes in the utilization of codes.

REFERENCES:
patent: 5166951 (1992-11-01), Schilling
patent: 5206882 (1993-04-01), Schloemer
Theory of Spread-Spectrum Communication, by Raymond L. Pickholtz, Donald L. Schilling, and Laurence B. Milstein; published in IEEE Transaction on Communication, vol. Com-30, No. 5, May 1982 . . .
Crosscorrelation Properties of Pseudorandom and related sequences, by Dilip V. Sarwate and Michael B. Pursley; published in Proceedings of the IEEE, vol. 68, No. 5, May 1980.

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