Pulse or digital communications – Equalizers
Patent
1998-07-31
1999-12-21
Bocure, Tesfaldet
Pulse or digital communications
Equalizers
333 18, H03H 730
Patent
active
060058927
ABSTRACT:
A method and apparatus for equalizing the frequency response of a transmission line is provided. The method includes the steps of modelling the frequency response of the transmission media for a predetermined frequency range to a predetermined accuracy; determining a desired equalizer response by taking an inverse of the modelled frequency response of the first step; implementing an equalizer that exhibits the desired response; and utilizing the equalizer to equalize the frequency response of the transmission line. The apparatus includes an adaptive equalizer circuit which includes a plurality of signal processor circuits which each take an input signal from the transmission line and process it to mimic a term in a transfer function which represents an inverse of the transfer function of the transmission line. The signals from these processors are then summed and multiplied by a programmable gain term. Then the input is added to the output of the multiplier to form an output equalizer signal. The programmable gain term is adapted to cause the signal at the output to closely approximate a predetermined high frequency signal peak value through a send loop mechanism.
REFERENCES:
patent: 3568100 (1971-03-01), Tarbos
patent: 4123625 (1978-10-01), Chow
patent: 4314288 (1982-02-01), Gyi
patent: 4754169 (1988-06-01), Morris
patent: 4875112 (1989-10-01), Dost et al.
patent: 5153875 (1992-10-01), Takatori
patent: 5181228 (1993-01-01), Takatori
patent: 5264785 (1993-11-01), Greason
patent: 5300834 (1994-04-01), Bret
patent: 5559448 (1996-09-01), Koenig
patent: 5719856 (1998-02-01), May
Bocure Tesfaldet
LSI Logic Corporation
LandOfFree
Method and apparatus for transmission line equalization 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 apparatus for transmission line equalization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for transmission line equalization will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-512526