Automatic equalization circuit and receiver circuit using...

Details Automatic equalization circuit and receiver circuit using... Automatic equalization circuit and receiver circuit using...

2005-04-12

2005-04-12

Le, Amanda T. (Department: 2634)

Pulse or digital communications

Equalizers

Automatic

C375S316000, C708S323000

Reexamination Certificate

active

06879630

ABSTRACT:
A demodulation circuit for demodulating a multilevel digital modulation signal. Only an in-phase or quadrature component of the training signal generated in the demodulation circuit is used for equalization convergence. Tap coefficients of an equalizing training equalizer are updated by supplying either the in-phase or quadrature component so that the calculation amount can be reduced. When the equalization convergence is established, the obtained tap coefficients are rotated in phase and set to a data reproduction equalizer.

REFERENCES:
patent: 3757221 (1973-09-01), Moehrmann
patent: 4638495 (1987-01-01), Mizoguchi
patent: 4736388 (1988-04-01), Eguchi
patent: 4811360 (1989-03-01), Potter
patent: 4868850 (1989-09-01), Kaku et al.
patent: 4926499 (1990-05-01), Kobayashi et al.
patent: 5432794 (1995-07-01), Yaguchi
patent: 5550596 (1996-08-01), Strolle et al.
patent: 5598432 (1997-01-01), Wei
patent: 5914982 (1999-06-01), Bjarnason et al.
patent: 6014407 (2000-01-01), Hunsinger et al.
patent: 6034564 (2000-03-01), Iwamatsu
patent: 6522702 (2003-02-01), Maruyama
patent: 20020027952 (2002-03-01), Kokuryo et al.
patent: 20020054649 (2002-05-01), Kokuryo et al.
patent: 9950969 (1999-10-01), None

Affiliated with

Also associated with

Rating

Automatic equalization circuit and receiver circuit using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic equalization circuit and receiver circuit using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic equalization circuit and receiver circuit using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3372098