Adaptive equalizer

M Fimoff, SM Nerayanuru, S Ozen - US Patent 7,324,591, 2008 - Google Patents
Equalizers such as adaptive decision feedback equalizers having a plurality of taps are
widely used in digital com munication receivers in order to provide correction for multipath …

Techniques for adaptively adjusting decision levels of a PAM-N decision feedback equalizer

D Raphaeli, Y Slezak - US Patent 8,576,903, 2013 - Google Patents
High-speed interface links connecting two devices over a physical cable are typically serial
communication links. Examples for such links include, but are not limited to, a high-definition …

Adaptive error slicer and residual intersymbol interference estimator

ME Rollins, JD McNicol - US Patent 7,764,732, 2010 - Google Patents
Conventional adaptive equalizers often use the “sign/sign” algorithm as a low complexity
means to adjust their tap weight coefficients by driving the correlation between its single-bit …

Receiver-based adaptive equalizer with pre-cursor compensation

R Badalone - US Patent 8,081,677, 2011 - Google Patents
An equalization circuit is disclosed that enables high data rate transmission over high loss
communications channels. Also disclosed is a set of functional blocks and update criteria …

Equalizer

K Murakami - US Patent 5,068,873, 1991 - Google Patents
Abstract" An adaptive equalizer comprising a computer unit which receives a known signals
sequence to estimate transmission channel characteristics and effect compensatory control …

Equalizer with improved performance

NR Sollenberger - US Patent 4,695,969, 1987 - Google Patents
(57) ABSTRACT A technique for converging the tap-weight coefficients of an automatic or
adaptive equalizer. The technique utilizes a training period during which time a plurality of …

Tap selectable decision feedback equalizer

S Ariyavisitakul, NR Sollenberger - US Patent 5,946,351, 1999 - Google Patents
This invention provides a decision feedback equalizer receiver apparatus and method for
assigning a reduced number F of feedforward filter taps and corresponding tap delay times …

Adaptive equalizer capable of linear and nonlinear weighting

RC Davis, GH Thaker - US Patent 4,435,823, 1984 - Google Patents
Equalizers are commonly used in digital data signaling systems to reduce the effects of
intersymbol interference on a signal received over a transmission channel. However …

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 equalizers with constrained feedback taps for reduced error propagation

M Fimoff, WJ Hillery, MD Zoltowski - US Patent 7,313,182, 2007 - Google Patents
Constrained tap weights of a decision feedback equalizer are determined according to the
channel impulse response of a channel and a constraint function. The constraint function is …