Patent ID: 6882681

Claim:
A spectrum spread receiver, which carries out a reverse spreading process on a signal received by a single antenna or a plurality of antennas, and also carries out a data demodulation process based upon the reverse spread signal, characterized by comprising: a path detection unit which detects a plurality of multi-path waves from the reverse spread signal, which have satisfied a predetermined standard and for outputting time-sequential positional information of the paths; a plurality of beam forming units which forms beams by using an adaptive algorithm based upon the time-sequential positional information that is received on the basis of the path; a plurality of transfer path estimation units which calculate a transfer path estimation value based upon a receiving signal obtained on the basis of a beam, and carry out a weighting process in accordance with the signal amplitude and a removing process on the phase variation, based upon the results of the estimation; an interference amount extraction unit which extracts an amount of interference based upon the received signal obtained on the basis of a beam; a plurality of normalizing units which normalize the signals that have been subjected to the phase variation removing process based upon the amount of interference; a combining unit which combines all the signals that have been normalized; and a determining unit which determines the signal after the combining by the combining unit.