Abstract:

This paper researches the influence of the switching power supply frequency on the CDMA receiver in an attempt to extend the applications of the switching power supply.The noise of switching power supply and the common methods for reducing noise are analyzed.A CDMA communication system model is set up by the simulink with single frequency sinusoidal as the noise.The adaptive trap and LMS algorithm are used to handle the noise in the receiver baseband with a general decrease in BER,EVM entry value of varying degrees after processing.This method provides the basis for switching power supply in the field of RF.

Key words: switching power supply;CDMA;LMS