Equalizer for the correction of digital signals

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

1982-12-10

1985-03-12

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

333 28R, H04B 314

Patent

active

045049580

ABSTRACT:
An equalizer designed to correct both precursor and postcursor distortion in signal samples periodically obtained from a train of digital symbols comprises two parallel circuit branches each including a delay line preceded by a linear upstream filter for postcursor suppression in the case of the first branch and precursor suppression in the case of the second branch. A decision stage in parallel with the delay line of the first branch works into a nonlinear downstream filter delivering a precursor-correcting signal to an adder which also receives precorrected earlier signals from the two delay lines. A second decision stage connected to an output of the adder feeds back to that adder a postcursor-correction signal via another nonlinear downstream filter. The purged signal emitted by the second decision stage may be subjected to additional filtering and precursor/postcursor correction with the aid of another adder and a third decision stage provided with a further feedback loop.

REFERENCES:
patent: 4097807 (1978-06-01), Fujimura
patent: 4170758 (1979-10-01), Tamburelli
patent: 4283788 (1981-08-01), Tamburelli
patent: 4288872 (1981-09-01), Tamburelli
Article entitled "Digital Receiver with Distributed and Integrated Decision Feedback . . . ", by G. Tamburelli-Dec. 1976.

Affiliated with

Also associated with

Rating

Equalizer for the correction of digital signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Equalizer for the correction of digital signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equalizer for the correction of digital signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-711790