Adaptive equalizer included in the receiver for a data transmiss

Details Adaptive equalizer included in the receiver for a data transmiss Adaptive equalizer included in the receiver for a data transmiss

1988-09-30

1990-03-27

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 98, H04B 306

Patent

active

049127250

ABSTRACT:
An adaptive equalizer is included in a receiver in a data transmission system. The equalizer is primarily intended for equalizing incoming, sampled signals, which are recoded on the transmission side of the system according to a quaternary code, e.g. a so-called "2B1Q" code. Already known equalizers contain two digital filters (F1, F2) and a decision circuit (B). One filter (F1) smooths out the precursors and the other (F2) the postcursors. According to the invention, the first filter (F1) comprises a digital filter with only one tap for eliminating the dominant precursor (h.sub.-1).

REFERENCES:
patent: 3792356 (1974-02-01), Kobayashi et al.
patent: 4158232 (1979-06-01), Koeth et al.
patent: 4247940 (1981-01-01), Mueller et al.
patent: 4283788 (1981-08-01), Tamburelli
patent: 4288872 (1981-09-01), Tamburelli
patent: 4477914 (1984-10-01), Murray et al.
patent: 4547888 (1985-10-01), Ryan et al.

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