Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P2
Session:
Number:P2-90
An Efficient Rake Receiver Design for WCDMA System
Seongsu Yang, Jinyong Lee, Soojin Kim, Younglok Kim,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
In wideband code division multiple access system, Rake receiver is gernerally applied as it equalization algorithm. The equalizaer is the most critical part in terms of the computational complexity of the receiver. Hence more efficient receiver implementin is needed to save power consumption and reduce the computational complexity. In this paper, we uses channel capacity and optimal energy allocation algorithm of multi input multiple output (MIMO) system. We choose effective Rake fingers among multi path components. Then we reallocate weight factors and combine effective Rake fingers. Applying proposed algorithm, we obtain advantage up to 2dB of performance at 0.1% of bit error rate. With about 0.57% additional computational complexity, we can find the optimal number of Rake fingers and reduce computations of unused Rake fingers.