Radio reception apparatus symbol timing control method, and symbol timing control program

Abstract

In a radio reception apparatus, a quadrature detector provides its digital output signal to a band-limiting filter after lowering a sampling frequency by a sampling frequency converter. Based on a correlation value obtained from an output of the band-limiting filter by a symbol timing detecting circuit, a symbol timing deviation detecting circuit detects a magnitude and a direction of a deviation of the timing of sampling in the sampling frequency converter, and controls timing of the sampling in the sampling frequency converter. Thereby, a symbol point of the correct timing is extracted.