A CDMA, RECEIVER, A CDMA BASE STATION AND A CDMA COMMUNICATION CENTRAL METHOD

摘要

Despreading means 10 despreads a pilot signal included in a first received signal 1. Of the pilot signal despread by the despreading means 10, strength determination means 15 determines the strength of the received pilot signal. Integration control means 16 determines the integration interval used by integration means 13, from the strength of the received pilot signal determined by the strength determination means 15. The differences in strength detected by strength difference detection means 12 are added together by the integration means 13 over the period of time decided by the integration control means 16. The integration time used by the integration means 13 is made changeable according to the receiving environment. Accordingly, when there is the superior receiving environment, there is reduced the load imposed on the integration means 13 when the integration means 13 performs the processing operations. Therefore, there can be realized a superior CDMA receiver phase tracking system which dissipates a fewer amount of electric power.