Decision-feedback equalizer capable of producing an equalized si

Details Decision-feedback equalizer capable of producing an equalized si Decision-feedback equalizer capable of producing an equalized si

1992-09-14

1994-07-19

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

375 16, 3647242, H03H 730, H03H 740, H03K 5159

Patent

active

053316630

ABSTRACT:
In a decision-feedback equalizer for use in combination with a demodulator (13) to equalize a demodulated signal into an equalized signal through a transversal filter (15), the transversal filter filters the demodulated signal into a filtered signal in accordance with a plurality of controllable tap gains. The filtered signal is processed into the equalized signal on the basis of the binary level of the filtered signal. The controllable tap gains are produced dependent on the demodulated and the equalized signal and a plurality of parameters. A delivering circuit (38) delivers limiting values as the parameters to the transversal filter when the demodulator is put in a synchronization state. The delivering circuit delivers additional values as the parameters to the transversal filter when the demodulator is put out of the synchronization state.

REFERENCES:
patent: 5097482 (1992-03-01), Serizawa et al.
patent: 5119401 (1991-06-01), Tsujimoto
patent: 5150379 (1992-09-01), Baugh et al.
patent: 5214671 (1993-05-01), Nakai
John G. Proakis, "Digital Communications", McGraw-Hill International Book Company, pp. 382-385.

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