| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an OFDM (orthogonal frequency division multiplexing) signal transmitter, an OFDM signal transmitter and an OFDM signal receiver with high estimation accuracy of transmission coefficient inverse matrix and for sufficiently cancelling interference even when time fluctuation of phasing large. <P>SOLUTION: In the OFDM signal transmitter with the OFDM signal transmitter having N pilot signal generators, N pilot signal multiplexers, N fast inverse Fourier transformers and N transmission antennas and the OFDM signal receiver having N reception antennas, N fast Fourier transformers, an inverse matrix arithmetic unit and an interference canceller, the inverse matrix arithmetic unit is constituted by providing a means for calculating a compensation transmission coefficient inverse matrix, a means for calculating a matrix by using weighted average between the respective elements of the compensation transmission coefficient inverse matrix and the respective elements of the stored transmission coefficient inverse matrix as elements and a means for storing the calculated matrix as a new transmission coefficient inverse matrix. <P>COPYRIGHT: (C)2004,JPO |
