Back to results
US 8,259,785 B2Granted
Adaptive equalizer with function of stopping adaptive equalization processing and receiver
AssigneeRenesas Electronics Corporation
InventorYasushi Ooi
Life of this patent
Estimating the term…
Abstract
An adaptive equalizer includes: an adaptive filter; and a control unit. The adaptive filter performs an adaptive equalization processing for an input signal modulated by a modulation method that produces a modulation signal with constant amplitude characteristics so as to make an amplitude of an equalized output signal constant. The control unit controls stop and execution of the adaptive equalization processing of the adaptive filter in accordance with characteristics of at least one of the input signal and the output signal.
Claims19
An adaptive equalizer, comprising:
- an adaptive filter being configured to perform an adaptive equalization processing for an input signal to make an amplitude of an equalized output signal constant, the input signal being modulated by a modulation method that produces a modulation signal with constant amplitude characteristics;
- and
- a control unit to control stop and execution of the adaptive equalization processing of the adaptive filter in accordance with characteristics of at least one of the input signal and the output signal,
- wherein the control unit determines an environment involving non-convergence, oscillation, or divergence of filter coefficients of the adaptive filter in accordance with characteristics of at least one of the input signal and the output signal, and stops the adaptive equalization processing of the adaptive filter under the determined environment.
1 more element
An adaptive equalizer, comprising:
- an adaptive filter processing a modulated input signal to an equalized output signal having a constant amplitude;
- a detection unit determining characteristics of at least one of the input signal and the output signal from a signal path of the adaptive filter;
- and
- a control unit stopping and starting the adaptive filter to process the modulated input signal to the equalized output signal having a constant amplitude according to the determined characteristics of at least one of the input signal and the output signal from the detection unit in the signal path of the adaptive filter,
- wherein the control unit determines an environment involving non-convergence, oscillation, or divergence of filter coefficients of the adaptive filter in accordance with characteristics of at least one of the input signal and the output signal, and stops the adaptive equalization processing of the adaptive filter under the determined environment.
2 more elements
Dependencies are inferred from the claim text.