| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high reception level, even when receiving the fading phenomenon, improve C/N ratio, cope with multi-paths of a long delay time, and small-scale a circuit required for diversity composition. SOLUTION: A reception part 1 converts each reception signal of one or more systems received by one or more reception antennas into a base band digital signal, and orthogonally detects, to then perform discrete Fourier transformation. A diversity composition part 2 performs diversity-composition of the baseband digital signal of the one or more systems. A transmission part 3 orthogonally detects after carrier data, after the diversity composition has been subjected to a inverse discrete Fourier transformation, and converts it into an OFDM signal of a desired frequency. A carrier data composition coefficient calculation part 5 calculates the frequency response of a transmission path of each system from the carrier data of each system, and calculates the weighting factor of carrier correspondence to be used in the diversity composition from this frequency response.
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