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    • 4. 发明专利
    • Ofdm communication device
    • JP4725356B2
    • 2011-07-13
    • JP2006046921
    • 2006-02-23
    • 株式会社デンソー
    • 泰伸 杉浦学 澤田
    • H04J11/00
    • PROBLEM TO BE SOLVED: To improve calculation accuracy of a phase correction value under frequency selective fading. SOLUTION: An OFDM (orthogonal frequency division multiplexing) communication apparatus 1 includes two system diversity branches (hereinafter called branch) A and B for receiving OFDM signals, a signal combining part 7 for combining signals output from the branches A and B, and a phase error correcting part 8 for correcting the phase of a signal (hereinafter called a combined signal) combined by the signal combining part 7. The phase error correcting part 8 includes a pilot extracting part 11 for extracting a pilot carrier from the signals received by the branches A and B, a phase error calculating part 12 for calculating phase errors of the pilot carrier extracted by the pilot extracting part 11, an averaging processing part 13 for calculating a value obtained by averaging phase errors calculated by the phase error calculating part 12 as a phase correction value, and a signal correction processing part 14 for correcting the phase of the combined signal with the phase correction value calculated by the averaging processing part 13. COPYRIGHT: (C)2007,JPO&INPIT