Clock recovery method and apparatus in a diversity receiver

Details Clock recovery method and apparatus in a diversity receiver Clock recovery method and apparatus in a diversity receiver

1994-02-22

1996-01-30

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375365, 455133, H04B 710, H04L 102

Patent

active

054886384

ABSTRACT:
A diversity receiver (200) recovers clock information from different versions (301, 302) of a transmitted signal (106). The diversity receiver (200) receives the different versions (301, 302), converts the versions (301, 302) into samples (307, 317) via a common sampling clock (309). The receiver (200) then correlates the samples (307, 317) with like synchronization patterns and uses clock information from the received version (307 or 317) which gives the greatest correlation output signal (504, 506) for data detection in one of two detectors (323, 326). The choice of detectors (323, 326) is determined by the diversity receiver (200) by counting the total number of bit-differences output by detectors (323, 326) over a predetermined time period and comparing the total bit-differences with a number represented by a threshold signal (330).

REFERENCES:
patent: 3783385 (1974-01-01), Dunn et al.
patent: 3975687 (1976-08-01), Tan et al.
patent: 4015205 (1977-03-01), Ikeda et al.
patent: 4035728 (1977-07-01), Ishikawa et al.
patent: 4704734 (1987-11-01), Menich et al.
patent: 5031193 (1991-07-01), Atkinson et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
Evaluation of Diversity Schemes in TDMA Digital Mobile Radio, Globecom '90, IEEE Global Telecommunications Conference, 1990, vol. 1, pp. 490-494.

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