Equalizer for the correction of digital signals with compensatio

Details Equalizer for the correction of digital signals with compensatio Equalizer for the correction of digital signals with compensatio

1984-05-04

1986-06-24

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

333 18, 364724, H03H 730

Patent

active

045970882

ABSTRACT:
An equalizer with two parallel branches for precursor and postcursor correction, receiving periodically incoming binary pulse samples, generates for each sample two purged symbols f, b at the outputs of these branches along with two decided symbols f and b, all of which are transmitted to a logic network checking whether or not the two decided symbols are identical. In the event of a disparity, the network produces an estimated signal s, calculates the absolute differences d.sub.sf, d.sub.sb between signals s and f, b, supplements them with further signals d.sub.f, d.sub.b representing the contributions of postcursors and precursors from one or more preceding and following samples, and compares resulting discriminatory signals D.sub.f and D.sub.b to determine which of the two decided symbols should be emitted as an output signal of the equalizer.

REFERENCES:
patent: 4034196 (1977-07-01), Butterweck et al.
patent: 4170758 (1979-10-01), Tamburelli
patent: 4288872 (1981-09-01), Tamburelli
patent: 4306307 (1981-12-01), Levy et al.

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