| 摘要 |
A multiplication circuit is removed from a receiving apparatus which receives an orthogonally modulated information sequence. A real-number part and an imaginary-number part of a transmission parameter converted into a frequency range are input to respective hard determination circuits (143, 144). The hard determination circuits (143, 144) convert the respective components into 1-bit data in accordance with a predetermined threshold value. Differential decoding circuits (145, 146) differentially decode the real-number part and the imaginary-number part which have been converted into 1-bit data, respectively, and output the obtained data to cumulative addition circuits (147, 148). The cumulative addition circuits (147, 148) cumulatively add the differentially demodulated data and supply it to respective identification-distance measurement circuits (149, 150) and also to a selector (152). The identification-distance measurement circuits (149, 150) determine the identification distance, and cause the selector (152) to select the components with a greater distance and to supply them to a majority decision circuit (153). The majority decision circuit (153) makes a majority decision of the data selected by the selector. <IMAGE> |
