| 摘要 |
A multiplication circuit is removed from a receiving apparatus which receives an orthogonally modulated information sequence. The real-number part and the imaginary-number part of a transmission parameter converted into a frequency range are input to hard determination circuits, respectively. The hard determination circuits convert the respective components into 1-bit data in accordance with a predetermined threshold value. Differential decoding circuits differentially decode the real-number part and the imaginary-number part which are converted into 1-bit data, respectively, and output the obtained data to cumulative addition circuits. The cumulative addition circuits cumulatively add the differentially demodulated data and supply it to identification-distance measurement circuits, respectively, and also to a selector. The identification-distance measurement circuits determine the identification distance, cause the selector to select the components with a greater distance and to supply them to a majority decision circuit. The majority decision circuit makes a majority decision of the data selected by the selector.
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