| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an OFDM (Orthogonal Frequency Division Multiplex) receiver capable of restraining deterioration in error rate characteristics by correcting constellation when the constellation rotates or expands and contracts. <P>SOLUTION: A MIMO-OFDM receiver 100 estimates a channel once again to the channel equalization results of a pilot carrier for each OFDM symbol for obtaining a correction value. More specifically, the ratio (error) is detected between a symbol point on the constellation of the pilot carrier, where channel equalization is performed by a conventional method, and a symbol point that should be originally, and an error for all subcarriers is obtained by interpolation processing as a correction value. A channel response estimated by the conventional method is multiplied by the correction value, thus correcting the channel response. <P>COPYRIGHT: (C)2007,JPO&INPIT |
