Mobile station capable of channel estimation using substantial single antenna at path switching, channel estimating apparatus and its receiving method

摘要

In a mobile station including a radio receiver circuit adapted to receive first and second signals from first and second antennas of a base station, a plurality of fingers each adapted to demodulate the first and second signals for one propagation path, and a Rake combiner adapted to combine demodulated signals of the fingers by removing phase fluctuations among the fingers are provided. Each of the fingers is constructed by a correlator adapted to descramble the first and second signals for the propagation path, a channel coefficient calculating section adapted to calculate first and second channel coefficients of the descrambled first and second signals, first and second average channel coefficient calculating sections adapted to calculate first and second average channel coefficients of the first and second channel coefficients, respectively, a synchronous detector adapted to perform a synchronous detection upon the descrambled first and second signals using the first and second average channel coefficients, and a channel coefficient clearing section adapted to detect a path switching of the first and second signals to clear either one of the first and second channel coefficients or one of the first and second average channel coefficients.