Patent ID: 7283598
Filing Date: 2007-10-16
Classification: H04L

Abstract:
1. An OFDM receiver apparatus to receive an OFDM signal, comprising: a receiver to receive an OFDM signal having a plurality of sub-carriers every symbol; a distortion estimator which estimates a distortion using each sub-carrier of the sub-carriers of the OFDM signal to generate channel distortion information; a distortion compensator which subjects the sub-carrier to distortion compensation according to a control signal to generate a distortion-compensated sub-carrier; a demodulator to demodulate the distortion-compensated sub-carrier; a phase distortion estimator to generate first phase distortion information indicating a phase distortion of each sub-carrier every symbol, using the distortion-compensated sub-carrier and the distortion information; a weighting synthesizer to weight the first phase distortion information by a plurality of weighting factors with time function over a plurality of symbol intervals and then synthesize the first phase distortion information, to generate a plurality of second phase distortion information; and a control signal generator to generate the control signal using the distortion information and the plurality of second phase distortion information.