| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for enhancing the demodulation accuracy of a received signal subjected to interference, by suppressing the cancellation error by a replica signal.SOLUTION: First demodulation means (11) demodulates a received signal modulated by an OFDM system. Replica signal generation means (12) generates a replica signal by re-modulating the demodulation results from the first demodulation means. Interference wave removal means (13, 14) generates an interference wave removal signal by subtracting the replica signal from the received signal. Second demodulation means (16) demodulates the interference wave removal signal. Cancellation control means (15) detects a cancellation error included in the interference wave removal signal, and when an evaluation value based on the cancellation error exceeds a preset tolerance, controls the replica signal generation means so that a replica signal for reducing the cancellation error is regenerated. |
