A novel architecture design for multicode CDMA rake receiver

Abstract

We propose a new architecture design for the Multicode CDMA (MC-CDMA) rake receiver. It contains one searcher module, three independent fat finger modules, and one combiner for the demodulation of high-rate data. We compare the hardware complexity of the proposed architecture with a conventional CDMA rake receiver in terms of the number of Walsh code channels. The result shows that our proposed architecture has a 12% and 18.6% reduction in gate count when the number of Walsh code channels is 4 and 7, respectively.