US 2011/0235696 A1 · Non-Linear Analog Decision Feedback Equalizer

Abstract

An equalizer that compensates for non-linear effects resulting from a transmitter, a receiver, and/or a communication channel in a communication system. A non-linear decision feedback equalizer compensates for the non-linear effects impressed onto a received symbol by selecting between equalization coefficients based upon a previous received symbol. The received symbol may be represented in form of logic signals based on the binary number system. When the previous received symbol is a binary zero, the non-linear decision feedback equalizer selects an equalization coefficient corresponding to binary zero to compensate for the non-linear effects impressed onto the received symbol. When the previous received symbol is a binary one, the non-linear decision feedback equalizer selects an equalization coefficient corresponding to binary one to compensate for the non-linear effects impressed onto the received symbol.

Claims22

Dependent claims

A non-linear decision feedback equalizer having an equalization tap, comprising:

a first multiplier configured to multiply an output of the equalization tap by a first equalization coefficient having a first magnitude to provide a first logic weighted output;
a second multiplier configured to multiply the output of the equalization tap by a second equalization coefficient having a second magnitude to provide a second logic weighted output, the second magnitude being different from the first magnitude;
and
a switch configured to select between the first logic weighted output and the second logic weighted output based upon a logic level of the output of the equalization tap.

1 more element

Dependencies are inferred from the claim text.

Non-Linear Analog Decision Feedback Equalizer

Life of this patent

Non-Linear Analog Decision Feedback Equalizer

Life of this patent

Abstract

Claims22