| 摘要 |
A mirror sub-carrier demodulation circuit includes a waveform generation unit 104 which generates a composite waveform of received I and Q signals, a peak detection unit 105 which detects peak values of the composite waveform generated by the waveform generation unit 104, a peak interval detection unit 106 which detects an interval of the peak values detected by the peak detection unit 105 and generates timing at which the received data is input, a temporary storage unit 108 which stores I data and Q data at the timing generated by the peak interval detection unit 106, a calculation unit 109 which performs a correlation calculation using the I data and the Q data of the temporary storage unit acquired during a 1-bit period on the basis of a setting value M of a mirror sub-carrier, and a data determination unit 110 which determines data of 0 or 1 from the result calculated by the calculation unit 109.
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