Patent ID: 7269213
Filing Date: 2007-09-11
Classification: H04L

Abstract:
1. A mobile station wireless apparatus equipped with a waveform equalizer capable of removing an adverse influence caused by frequency selective fading, said waveform equalizer comprising: an equalizing filter unit including a delay circuit with a tap; a discriminator which decodes an output signal of said equalizing filter unit; tap arrangement control means which controls a tap arrangement of said equalizing filter unit; a tap coefficient monitoring unit which monitors a tap coefficient of said equalizing filter unit; and detector means which detects a moving speed of the mobile station wireless apparatus, wherein when the moving speed is higher than a preselected threshold value, the tap arrangement of said equalizing filter unit is changed so as to restart a starting step of the equalizing filter unit for equalizing a reception signal, depending upon a change state of the tap coefficient used while the reception signal is equalized.