Adaptive auto equalizer

Details Adaptive auto equalizer Adaptive auto equalizer

1997-12-05

2000-07-04

Pham, Chi H.

Pulse or digital communications

Equalizers

Automatic

375232, 3647242, H03H 730, H03H 740

Patent

active

06084907&

ABSTRACT:
In an adaptive auto equalizer for automatically amending a signal distorted through propagation in a transmission line to the expected value, each multiplication unit includes a plurality of weight coefficient holding units for storing weight coefficients. The number of these weight coefficient holding units is the same as the clock number which is equal to a delay required for updating the weight coefficients. An adder calculates weight coefficients every clock. The storage location of the calculated weight coefficients is switched by a selector, and the weight coefficients calculated every clock are serially held in a corresponding one of the weight coefficient holding units. The other selectors serially select one of the plurality of weight coefficient holding units and the weight coefficients thus held are given to the multiplication units. Consequently, each of the weight coefficients held in the weight coefficient holding units is given to a corresponding one of the multiplication units in a time period corresponding to the clock number equal to the delay time required for updating the weight coefficients. Thus, even if there is a delay before the update of the weight coefficients, an output error does not diverge, which makes it possible to obtain an ideal output signal in a short time and in a stable manner.

REFERENCES:
patent: 4322852 (1982-03-01), Barnes
patent: 4468786 (1984-08-01), Davis
patent: 4559635 (1985-12-01), Sari
patent: 5175746 (1992-12-01), Inoue et al.
patent: 5267099 (1993-11-01), Fujiwara et al.
patent: 5274512 (1993-12-01), Tanaka et al.
patent: 5416799 (1995-05-01), Currivan et al.
patent: 5461640 (1995-10-01), Catherer
patent: 5481565 (1996-01-01), Pal
patent: 5526377 (1996-06-01), Yedid et al.
patent: 5541956 (1996-07-01), Ueda
patent: 5644597 (1997-07-01), Ueda
patent: 5648987 (1997-07-01), Yang et al.
patent: 5768311 (1998-06-01), Betts et al.
patent: 5793806 (1998-08-01), Maeda et al.
patent: 5805637 (1998-09-01), Hirosaka et al.
patent: 5898731 (1999-04-01), Kwak

Affiliated with

Also associated with

Rating

Adaptive auto equalizer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Adaptive auto equalizer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive auto equalizer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1493072