Low complexity adaptive receiver for cdma withmultipath

A new receiver scheme for a DS-CDMA system similar to the IS-95 uplink is proposed in this paper that is of lower complexity and superior bit error rate performance in comparison to the conventional non-coherent Rake receiver. The proposed receiver consists of a coherent Rake receiver in the form of a transversal lter, and uses channel estimates obtained by an adaptive channel identiication algorithm. Adaptation follows the Set-Membership Filtering methodology, that features fast convergence and lower computational complexity compared to least-squares techniques.