| 摘要 |
PROBLEM TO BE SOLVED: To eliminate adjacent channel interference caused by a difference in frequency offset of a base station. SOLUTION: A reception signal is input to a multiplier 13 for compensating for frequency offset of an OFDM signal 1 from a base station A and a multiplier 21 for compensating for frequency offset of an OFDM signal 2 from a base station B. Output of the multiplier 13 is input to a subtractor 15 via a GI elimination section 14. Output of the multiplier 21 is input to a Fourier transform section 23 via a GI elimination section 22, made into a component for each sub-carrier of the OFDM signal 2 from the base station B, and combined into a temporal waveform by an inverse Fourier transform section 24. The temporal waveform from the inverse Fourier transform section 24 is brought into the same frequency relation as the frequency offset of the base station A by a multiplier 25, then input to the subtractor 15, and subtracted from an output signal from the GI elimination section 14. Thus, the receiving signal from which an interference signal from the base station B is eliminated, is supplied to a Fourier transform section 16. COPYRIGHT: (C)2009,JPO&INPIT
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