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ORTHOGONAL DEMODULATION DEVICE, ORTHOGONAL DEMODULATION METHOD, AND PROGRAM ORTHOGONAL DEMODULATION
ORTHOGONAL DEMODULATION DEVICE, ORTHOGONAL DEMODULATION METHOD, AND PROGRAM ORTHOGONAL DEMODULATION
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机译:正交解调装置,正交解调方法和程序正交解调
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摘要
A quadrature demodulation device effectively utilizes the result of quadrature detection in order to improve demodulation efficiency. The quadrature modulation device includes a quadrature detector DT which performs quadrature detection on a reception signal obtained by receiving a radio wave from a radio frequency identification tag, to generate an in-phase signal and a quadrature-phase signal, and a demodulation circuit DM which detects a preamble of a particular transition pattern in at least one of the in-phase signal and the quadrature-phase signal and which decodes the at least one of the in-phase signal and the quadrature-phase signal to obtain data succeeding the preamble, the demodulation circuit DM further performing error detection on a decoding result to check for errors.
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