RECEIVING METHOD AND APPARATUS

摘要

One of a plurality of correlated values as Walsh transformed is selected with a high accuracy. An FWT arithmetic part (50) performs an FWT arithmetic of a CCK modulated signal to output 64 Walsh transformed values (FWT). A Maximum value searching part (52) receives the 64 Walsh transformed values (FWT) to output, based on the magnitudes thereof, a first phase index signal (210) and a first phase correlated value signal (208) corresponding to one Walsh transformed value (FWT). A second phase signal deriving part (152) receives the first phase index signal (210) to output a second phase index signal (214) and a second phase correlated value signal (212). A phase signal deciding part (154) detects the delays of the first phase correlated value signal (208) and second phase correlated value signal (212) relative to the already outputted signals. The results of the delay detections are compared with the phases as before the differential encoding, whereby the signal having a smaller difference is selected.