Equalizer device, receiver device and equalization method

摘要

The present invention is provided with: a CIR generating unit which generates an channel impulse response from a received signal; a CIR variation detection unit which uses a plurality of channel impulse responses generated from a plurality of different sections of the received signal by the CIR generating unit to detect an amount of variation in the channel impulse response; an equivalent width control unit which determines an equivalent width corresponding to a signal length used in equalization of the received signal such that the equivalent width is shortened as the amount of variation in the channel impulse response increases; and a waveform equalization unit which uses the channel impulse response generated by the CIR generating unit to equalize the received signal over the equivalent width determined by the equivalent width control unit and generate a demodulated signal.

主权项

1. An equalizer device comprising:
a CIR generator that generates a channel impulse response from a received signal; a CIR variation detector that uses a plurality of channel impulse responses generated from a plurality of different sections of the received signal by the CIR generator that detects an amount of variation in the channel impulse response; an equivalent width controller that determines an equivalent width corresponding to a signal length used in equalization of the received signal such that the equivalent width is shortened as the amount of variation in the channel impulse response increases; and a waveform equalizer that uses the channel impulse response generated by the CIR generator to equalize the received signal over the equivalent width determined by the equivalent width controller and generate a demodulated signal.