Adaptive equalizer for controlling operation thereof by...

Details Adaptive equalizer for controlling operation thereof by... Adaptive equalizer for controlling operation thereof by...

2007-02-27

2007-02-27

Kumar, Pankaj (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

Reexamination Certificate

active

10316019

ABSTRACT:
An adaptive equalizer has an FIR filter for generating an equalized output signal by equalizing an RF input signal, a sign detector for detecting a sign of the output signal, an absolute value calculator for calculating an absolute value of the output signal, a level error detection part for calculating an error by using a sign and an absolute value, and a coefficient calculator for calculating coefficients of the FIR filter based on the error. The level error detection part detects a detection level of the output signal, the detection level which is one of reference values required by a channel characteristic model of a decoder provided with the output signal, and calculates the error which is the difference between the detection level and a real level of the output signal. Since the sign and the value of the signal are used for calculating the error, the reliability of the error calculation increases.

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