Decision feedback equalizer including forward part whose signal reference point is shiftable depending on channel response

I Tsujimoto - US Patent 5,119,401, 1992 - Google Patents
A center tap of a transversal filter, which forms part of a forward equalizer, is shifted by at
least one symbol interval. An error signal is generated using a decision output and tap …

Adaptive equalizer using precursor error signal for convergence control

RK Randall, WF Zucker - US Patent 4,789,994, 1988 - Google Patents
Operation of a decision feedback equalizer is enhanced by measuring the intersymbol
interference precursor effect on each symbol decision output and utilizing that measurement …

Decision feedback equalizer and a method of operating a decision feedback equalizer

MK Gurcan - US Patent 4,985,902, 1991 - Google Patents
A decision feedback equalizer includes a transversal feedforward digital filter section (16)
and a recursive feedback digital filter section (18) including a decision stage (20). In order to …

Dual decision feedback equalizer with selective attenuation to improve channel performance

K Du, Y Xu - US Patent 6,307,884, 2001 - Google Patents
An apparatus and method for improving error rate perfor mance in a communication channel
utilizes a dual decision feedback equalizer (DDFE) through the application of selec tive …

Decision feedback equalizer with a pattern detector

A Kanemasa, A Sugiyama - US Patent 4,730,343, 1988 - Google Patents
An improved decision feedback equalizer, which re moves intersymbol interference from
pulse transmis sions having a desired period, includes an arithmetic circuit (9) for extracting …

Signal bias remover apparatus

WF Acker - US Patent 4,186,384, 1980 - Google Patents
An equalizer bias signal removal system for adjusting an analog input signal toward being
symmetrical about a reference signal level where said analog input signal, combined with a …

Convergence speed, lowering the excess noise and power consumption of equalizers

I Florentin, P Sinha, W Farnbach… - US Patent App. 09 …, 2002 - Google Patents
An equalizer for equalizing channel multi-path distortion includes digital filters. To improve
the convergence speed and tracking ability of the equalizer while lowering noise and power …

Apparatus for and method of controlling a feedforward filter of an equalizer

X Yang, RW Citta, SM LoPresto - US Patent 7,885,325, 2011 - Google Patents
(57) ABSTRACT A method of synchronizing a feed forward filter (46) that receives a signal
resulting from the transmission of a series of symbols through a channel, wherein the series …

Technique for decision-directed equalizer train/retrain

CW Farrow - US Patent 4,709,374, 1987 - Google Patents
US4709374A - Technique for decision-directed equalizer train/retrain - Google Patents
US4709374A - Technique for decision-directed equalizer train/retrain - Google Patents …

Signal processing method and apparatus for reducing equalizer error

A Fertner - US Patent 5,742,642, 1998 - Google Patents
A decision feedback equalizer (DFE) is controlled co equalize a current signal sample for
intersymbol interference and/or other distortion caused by the communications channel. An …