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| Performance Analysis on Reduced-Complexity UWB SRAKE Receiver under NLOS Environment |
| Xiao Zhu①; Xiang Xin①②; Yu Quan①③; Yi Ke-chu① |
| ①State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China;②Air Force Engineering University, Xi’an 710083, China;③Institute of China Electronics System Engineering Corporation, Beijing 100039, China |
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Abstract In this paper, a Reduced-Complexity Selective RAKE (RC-SRAKE) receiver scheme is proposed, which can be adopted in ultra-wideband multipath channel under NLOS environment. It employs a convolution based finger selection algorithm, which has low complexity because it does not require precise channel information or channel estimation. A closed-form expression for symbol error probability of the proposed RC-SRAKE is derived in term of the combined fingers and impulse noise. The derived expressions are evaluated numerically with IEEE 802.15.4a NLOS channel models. It is demonstrated that RC-SRAKE can achieve the approximate performance as to ideal SRAKE with a fewer fingers.
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Received: 07 April 2008
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2009, Vol. 31 
