All-lag spread-spectrum correlator

Details All-lag spread-spectrum correlator All-lag spread-spectrum correlator

2005-03-15

2005-03-15

Tse, Young T. (Department: 2637)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S142000, C375S147000

Reexamination Certificate

active

06868115

ABSTRACT:
An all-lag correlator is provided that correlates a received spread-spectrum signal with a reference code and produces at each sampling instance N correlation lags corresponding to the correlation of the received signal with 0, 1, . . . , N−1 lags (or delays) of the reference code, wherein N is the length of the reference code. The correlator includes a spread spectrum signal storage means, subtraction means, multiplication means, correlation lag storage means and addition means configured such that a correlation lag for a present sampling instance is based on a correlation lag of a previous sampling instance.

REFERENCES:
patent: 5022047 (1991-06-01), Dixon et al.
patent: 6198765 (2001-03-01), Cahn et al.
patent: 6208291 (2001-03-01), Krasner
patent: 6289041 (2001-09-01), Krasner
patent: 6330292 (2001-12-01), Dent et al.
patent: 6611512 (2003-08-01), Burns

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