Patent ID: 7042931

Claim:
A receiver for receiving CDMA system electric waves transmitted from a mobile station equipped with a searcher, comprising: a correlator which receives input of a baseband signal which has been converted to a digital signal by a demodulator and an A/D converter in a wireless receiver and which performs a reverse spread process by multiplication of said baseband signal and a spread code pilot symbol and consecutively outputs a plurality of correlation values, where each of the plurality of correlation values corresponds to a time slot of an input data signal; an in-phase adder which receives the plurality of correlation values, and stores x received correlation values in a first addition results storage memory, where x is an integer greater than or equal to 2, and wherein said in-phase adder retrieves the stored correlation values, adds the stored correlation values, and converts the added correlation values into an electric power value; a second addition results storage memory for storing y electric power values output from said in-phase adder, where y is an integer greater than or equal to 2; an electric power adder which batch reads the stored v electric power values from the second addition results storage memory, adds the stored electric power values, and which converts the added electric power values into a delay profile; and a path detection apparatus for executing a path detection based on the delay profile output from said electric power adder, wherein said second addition results storage memory reserves only enough space to enable storage of y electric power values input from said in-phase adder, and wherein said path detection apparatus performs threshold value processing on said delay profile, extracts a highly accurate path, and outputs said path to a RAKE synthesizer.