Automatic adaptive filtering according to frequency modulation r

Details Automatic adaptive filtering according to frequency modulation r Automatic adaptive filtering according to frequency modulation r

1996-07-10

1998-08-11

Chin, Stephen

Pulse or digital communications

Receivers

Interference or noise reduction

375200, 375204, 36472419, H04B 110, H04B 169

Patent

active

057938202

ABSTRACT:
A transversal adaptive finite impulse response (FIR) filter is modified for automatically filtering modulated signal components from a received signal based on frequency modulation rate. Coefficients of the filter are adapted to provide for filtering of signals having undesired modulation rates. The adapting operation includes selectively updating the coefficients using an error signal and iteratively decaying all the coefficients towards zero. The adaptation of the filter coefficients ensures symmetrical coefficient growth and introduces a constant group delay to the received signal to provide for filtering of complex signal components from a received signal according to frequency modulation rate without the use of a reference source.

REFERENCES:
patent: 4066878 (1978-01-01), Miller et al.
patent: 4577334 (1986-03-01), Boer et al.
patent: 4654811 (1987-03-01), Jakubzick
patent: 4668910 (1987-05-01), Stepp
patent: 4673982 (1987-06-01), Tam et al.
patent: 4694451 (1987-09-01), Adams et al.
patent: 4726036 (1988-02-01), Sawyer et al.
patent: 4792915 (1988-12-01), Adams et al.
patent: 5090024 (1992-02-01), Vander Mey et al.
patent: 5168215 (1992-12-01), Puzzo
patent: 5263046 (1993-11-01), Vander Mey
patent: 5268927 (1993-12-01), Dimos et al.
patent: 5278862 (1994-01-01), Vander Mey
patent: 5359625 (1994-10-01), Vander Mey et al.
patent: 5432725 (1995-07-01), Bond
patent: 5440583 (1995-08-01), Koike
Wei et al., "Adaptive Recovery of a Chirped Signal Using the RLS Algorithm," IEEE Trans. on Signal Proc., vol. 45, No. 2 ( Feb. 1997).

Affiliated with

Also associated with

Rating

Automatic adaptive filtering according to frequency modulation r 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 adaptive filtering according to frequency modulation r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic adaptive filtering according to frequency modulation r will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-397707