Method of searching for a bursty signal

Details Method of searching for a bursty signal Method of searching for a bursty signal

1997-03-04

1999-02-02

Pham, Chi H.

Pulse or digital communications

Repeaters

Testing

370342, 370335, H04B 1500, H04K 100, H04L 2730

Patent

active

058675272

ABSTRACT:
An integrated search processor used in a modem for a spread spectrum communications system buffers receive samples and utilizes a time sliced transform processor operating on successive offsets from the buffer. The search processor autonomously steps through a search as configured by a microprocessor specified search parameter set, which can include the group of antennas to search over, the starting offset and width of the search window to search over, and the number of Walsh symbols to accumulate results at each offset. The search processor calculates the correlation energy at each offset, and presents a summary report of the best paths found in the search to use for demodulation element reassignment. The search is done in a linear fashion independent of the probability that a signal being searched for was transmitted at any given time.

REFERENCES:
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5297161 (1994-03-01), Ling
patent: 5412686 (1995-05-01), Ling
patent: 5490165 (1996-02-01), Blakeney, II et al.
patent: 5654979 (1997-08-01), Levin et al.
patent: 5710768 (1998-01-01), Ziv et al.

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