| 摘要 |
PROBLEM TO BE SOLVED: To correct frequency offset of a signal received by a plurality of antennas. SOLUTION: A frequency offset correcting section 110 estimates frequency offset in a preamble section, corrects a digital reception signal 300 with the estimated initial frequency offset, and further, corrects a below-mentioned residual frequency signal 324. A reception weight vector calculating section 68 calculates a reception vector weight signal 312 by an LMS algorithm. Also, the section 68 estimates frequency offset included in a signal 326 received after correction on the basis of an error vector or the signal 312 which are derived by the LMS algorithm, and outputs it as the signal 324. A multiplying section 62 weights the signal 326 with the signal 312, an adding section 64 adds the output of the section 62, and a composite signal 304 is outputted. COPYRIGHT: (C)2005,JPO&NCIPI
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