OFDM SIGNAL RECEIVING APPARATUS AND OFDM SIGNAL RECEIVING METHOD

摘要

PROBLEM TO BE SOLVED: To reduce circuit scale or computational complexity by reducing frequency response estimation error. SOLUTION: An OFDM signal receiver comprises: a first Fourier transform means for converting by a Fourier transform an OFDM signal; a first dividing means for dividing a pilot signal contained in an output of the first Fourier transform means by a specified pilot signal; a zero insertion means for inserting zero signals in an output of the first dividing means; a window function multiplying means for multiplying an output of the zero inserting means by a window function; an inverse Fourier transform means for applying an inverse Fourier transform to an output of the window function multiplying means; a coring means for coring an output of the inverse Fourier transform means; a truncation means for truncating an output of the coring means at a specified data length; a second Fourier transform means for applying another Fourier transform to an output of the truncation means; a window function dividing means for dividing an output of the second Fourier transform means by the window function; and a second dividing means for dividing the output of the first Fourier transform means by an output of the window function dividing means. COPYRIGHT: (C)2005,JPO&NCIPI