RECEIVER FOR ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To make a channel estimation value of a pilot symbol available for channel compensation of a data symbol even if an FFT segmenting position is different for every frame in an OFDM receiver. SOLUTION: The present invention relates to an OFDM receiver including: a fast Fourier transform circuit which outputs a plurality of subcarriers of a frequency domain; a channel estimation circuit which determines a correlation between a pilot signal received at a fixed interval in a baseband signal and a known pilot signal pattern to determine a channel estimation value for each subcarrier; and a channel compensation circuit which compensates for a channel fluctuation using the channel estimation value for an output of the fast Fourier transform circuit. The OFDM receiver includes: a circuit for computing a phase rotation amount caused by a difference of timings to segment symbols as a fast Fourier transform object when performing fast Fourier transform processing using the fast Fourier transform circuit; and a circuit for correcting the phase rotation amount for the channel estimation value determined by the channel estimation circuit. COPYRIGHT: (C)2007,JPO&INPIT