Distortion adapter receiver having intersymbol interference corr

Details Distortion adapter receiver having intersymbol interference corr Distortion adapter receiver having intersymbol interference corr

1976-01-05

1977-06-28

Safourek, Benedict V.

325473, 328162, H03K 900

Patent

active

040328473

ABSTRACT:
A differentially adaptive receiver system in which correction is provided for degradation of performance caused by overlapping of adjacent data pulses. A reference signal is produced having the same complex envelope as the received signals and having a constant phase state independent of changes of phase state of the received signals. The received signals are detected against the reference signal as in an ideal matched filter receiver. The detected signals are integrated by an integrate and dump filter over the duration of the pulse period. A correction signal representing the amount of overlap between overlapping adjacent pulses is summed with the output of the integrated dump filter. The sum of the correction signal and integrate and dump filter output is sampled and held by sample and hold circuit to produce the digital data output.

REFERENCES:
patent: 3605018 (1971-09-01), Coviello
patent: 3875333 (1975-04-01), Nakano et al.

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