Patent ID: 9559876
Date: 2017-01-31
CPC Classifications: H04L

Claim:
1. An adaptive equalization processing circuit comprising: an adaptive equalization processing unit which performs adaptive equalization processing to remove waveform distortion of a received signal, and outputs an equalization output signal; a tap coefficient generation unit which inputs a feedback signal and generates tap coefficients used in the adaptive equalization processing unit; a training signal generation unit which extracts timing information from the received signal, demodulates the received signal and outputs a training signal generated by the demodulation which is synchronized with the received signal; and a selection unit which detects a state of convergence of the adaptive equalization processing unit, selects one of the training signal and a decision output signal of symbol decision on the equalization output signal outputted from the adaptive equalization processing unit depending on the state of the convergence, and outputs the selected signal as the feedback signal to the tap coefficient generation circuit, wherein, in response to the state of convergence being in an unconverged state, the selection circuit selects the training signal as the feedback signal, and in response to the state of convergence being in a converged state, the selection circuit selects the decision output signal as the feedback signal.