Abstract: A method for the multi-path detection in code division multiple access system is provided, and the method includes the following step: A, initially detecting multi-path for the sample points in the searching area, obtaining the sample points for processing peak detection (300); B, detecting whether the current nonzero points Pi and Pi+3 are both the partial peak (302), if yes, detecting the partial double peak (304), if no, detecting the partial single peak (303); C, buffering the delay and power information of nonzero sample points that are detected peak (305); D, judging whether the peak detection is ending (306), if ending, outputting the position and power information of multi-path that are buffered (308); or else, making the Pi+1 and Pi+4 as new Pi and Pi+3 (307), returning step B. A receiver of code division multiple access is also provided at the same time.

Abstract: A multipath tracking device and method in a CDMA communication system adds a middle path power estimation unit, a normalization processing unit and a nonlinear mapping unit in an existing multipath tracking device. A precise current middle path signal power is acquired by the middle path power estimation unit; the normalization processing is performed for the power errors of the late, early path signals in the normalization processing unit, and thus the impact of the middle path signal power on the power error is eliminated, the active normalization for the power error is realized; after obtaining the smooth and stable normalized power error signal, the precise delay error signal is determined in the nonlinear mapping unit according to the nonlinear mapping relation between the normalized power error signal and the delay error signal, thereby the precise voltage control signal is acquired.

Abstract: A dynamic multi-path detecting method in CDMA communication system is disclosed, the method includes: A, perform dynamic multi-path difference detection for the multi-path positions gotten from the multi-path detection, judge whether the multi-path position information in the conjoint frames is changed, if it is changed, output all of the multi-path positions that have been done by the multi-path difference detection, and perform the step B, otherwise, treat the multi-path position gotten from the current frame multi-path detection as the final multi-path detection result, and perform the step C; B, perform multi-path validation with every multi-path position that is output, and perform conjoint multi-path process for the multi-path positions that have been validated, treat the multi-path position processed by the conjoint multi-path process as the final multi-path detection result; C, output the final multi-path detection result.