A CDMA receiving apparatus is newly provided with a profile calculator 107 for calculating a profile of a reception signal and a tap controller 108 for determining the number of needed taps and the timing from the profile. An adaptive despreading filter 110 for performing filter processing on a reception signal r, an autocorrelative inverse matrix calculator 113 and an adaptive controller 111 for controlling a filter coefficient of an adaptive despreading filter receive an instruction of the tap length and the timing from the tap controller 10 to calculate only the tap position determined.