Pulse or digital communications – Equalizers – Automatic
Patent
1992-08-31
1995-08-22
Chin, Stephen
Pulse or digital communications
Equalizers
Automatic
375229, 333 18, H04B 306
Patent
active
054447399
ABSTRACT:
In an equalizer including a plurality of delay elements, a plurality of weighting elements and an adder, the impulse response of a signal transmission channel is estimated to selectively switch over a plurality of selector switches associated with the inputs and outputs of the respective delay elements, thereby selectively changing the combination of the delay elements and the weighting elements transmitting an input signal from the channel to the adder and also changing the combination of the adder and a delay element feeding back the output of the discriminator to the adder. Thus, the number of required taps of the equalizer can be reduced, so that the power consumption and size of the equalizer can be reduced.
REFERENCES:
patent: 3906347 (1975-09-01), Motley et al.
patent: 5050186 (1991-09-01), Gurcan et al.
patent: 5173925 (1992-12-01), Mizoguchi
patent: 5214671 (1993-05-01), Nakai
Mitsuru Uesugi, et al "Adaptive Equalization in TDMA Digital Mobile Radio", IEEE Global Telecommunications Conference and Exhibition 1989 Conference Record, vol. 1 of 3, pp. 95-101, Nov. 27-30, 1989, Dallas, Tex.
R. D'Avella, et al "Adaptive Equalization in TDMA Mobile Radio Systems", 37th IEEE Vehicular Technology Conference, 1-3 Jun. 1987, pp. 385-392.
Allen Gersho, et al "Adaptive Cancellation of Channel Nonlinearities for Data Transmision", ICC'84, Links for the Future, vol. 3, May 1984, pp. 1239-1242.
Honma Kouichi
Tsubaki Kazuhisa
Uesugi Mitsuru
Chin Stephen
Ghebretinsae T.
Matsushita Electric - Industrial Co., Ltd.
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