Reception timing detection circuit of cdma receiver and detection method

Abstract From the Canadian patent

A reception timing detection circuit of a CDMA receiver comprises an A/D converter for obtaining a digital reception signal, a correlator for obtaining a cross-correlation between the digital reception signal and a known signal series periodically within a predetermined lag an, interpolation filter for re-sampling a signal output from the correlator at a frequency higher than a sampling frequency for the A/D converter, a power calculation section for obtaining a re-sampled cross-correlation signal power an, averaging section for averaging the cross-correlation signal power over a plurality of cycles, and a peak detection section for obtaining a peak averaged cross-correlation signal power …