Method and circuit arrangement for compensating for delayed comp

Details Method and circuit arrangement for compensating for delayed comp Method and circuit arrangement for compensating for delayed comp

1996-04-22

1998-10-27

Pham, Chi H.

Pulse or digital communications

Equalizers

Automatic

375232, 375231, H03H 730, H03H 740

Patent

active

058287019

ABSTRACT:
The invention is related to a method and circuit arrangement for compensating for delayed components of a received transmission signal especially in a digital transmission system based on physical lines. The method and arrangement utilize a decision feedback equalizer, wherein the weighted sum of decisions based on earlier samples is subtracted from a sample. According to the invention, delayed components in the signal are measured in a measuring unit (11). The earlier decisions to be subtracted from a signal sample are selected from a predetermined group of consecutive decisions, and the strength of the delay component in the delay between each decision and the signal sample is used as a selection criterion. Advantageously, the equalizer according to the invention includes a selector (8) which connects some of the taps of the delay line (7) to multiplier units (9). By means of this method and arrangement it is possible to implement with a small number of multiplier units an equalizer capable of compensating for delayed components with long delays.

REFERENCES:
patent: 4730343 (1988-03-01), Kanemasa et al.
patent: 5031193 (1991-07-01), Atkinsson et al.
patent: 5097482 (1992-03-01), Serizawa et al.
patent: 5594756 (1997-01-01), Sakurai et al.
patent: 5642382 (1997-06-01), Juan
patent: 5646958 (1997-07-01), Tsujimoto
IEEE Trans. Commun. Tech., vol. COM-19, No. 3, 1971, George D.A. Bowen, R.R. Storey J.R., "An Adaptive Feedback Equalizer", pp. 281-293.
Proakis, J.G. "Digital Communications" (1989) McGraw-Hill, New York. pp. 554-597.

Affiliated with

Also associated with

Rating

Method and circuit arrangement for compensating for delayed comp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and circuit arrangement for compensating for delayed comp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and circuit arrangement for compensating for delayed comp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1620008