Abstract:A combined scheme of smart antenna and PIC with low complexity is proposed for the uplink receiving of WCDMA system.At first we develop the LS-DRMTA algorithm proposed by Z.Rong into a new algorithm named pilot bit assisted LMS-DRMTA in accordance with the uplink frame structure of WCDMA system.The proposed algorithm cuts down lots of computation complexity of LS-DRMTA algorithm,which simplifies its application in WCDMA system.Further more,the simulation experiments indicate that the new algorithm can perform at much lower BER than LS-DRMTA.After the array processing of the received signal by the proposed algorithm,we go further to cancel the CCI by adaptive PIC which is a useful method for MUD.The overall scheme proposed is characterized by low computation complexity、little delay and easy real time implemetation.