Efficient digital filter and method using coefficient precombing

Details Efficient digital filter and method using coefficient precombing Efficient digital filter and method using coefficient precombing

1996-10-04

1998-07-21

Chin, Stephen

X-ray or gamma ray systems or devices

Photographic detector support

Dental

36472419, H04B 110

Patent

active

057844194

ABSTRACT:
A digital filter (200) suitable for use in a CDMA or other burst-mode communication device (100) employs precombining of filter coefficients to reduce filter complexity and power dissipation. The digital filter (200) includes a coefficient storage circuit (216) for storing the precombined coefficients, a selection circuit (212) for selecting appropriate precombined coefficients in response to the input signal and a combining circuit (214) for combining the appropriate precombined coefficients to produce a filtered signal.

REFERENCES:
patent: 3872290 (1975-03-01), Crooke et al.
patent: 5157693 (1992-10-01), Lemersal, Jr. et al.
patent: 5353026 (1994-10-01), Wilson
patent: 5487089 (1996-01-01), Misaizu et al.
patent: 5508741 (1996-04-01), Hieda
patent: 5513223 (1996-04-01), Shoji
patent: 5515402 (1996-05-01), Chester
patent: 5535150 (1996-07-01), Chiang
patent: 5648922 (1997-07-01), Han
TIA/EIA Interim Standard, "Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System", TIA/EIA/IS-95, pp. 6-27 to 6-28, Jul. 1993.
Kobayashi et al., "An Integrated .pi./4-Shift QPSK Baseband Modulator", IEEE 1994 Custom Integrated Circuits Conference, pp. 399-402, 1994.

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