基于最小四阶矩准则的RLS空时多用户检测算法

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A space-time multiuser detection based on the RLS-LMF algorithm

ZHENG Lin(1,2);OUYANG Shan(2);QIU Hong-bing(2)

(1) School of Telecommunications Engineering, Xidian Univ., Xi′an 710071， China
(2) Dept. of Communication and Information Eng., Guilin Univ. of Electronic Technology, Guilin 541004， China

Received:1900-01-01 Revised:1900-01-01 Online:2006-10-20 Published:2006-10-30

Abstract

Abstract: A code-constrained least mean fourth(LMF) criterion is presented for blind multiuser detection. It is an improved higher-order form of the least mean square(LMS) criterion. Other than the commonly used existing high-order criterion local minima, the LMF is proved to be globally convergent. The Hessian matrix of the objective function is derived and analyzed to prove the global convexity of the LMF. In multipath CDMA channels, the LMF criterion is combined with the recursive least-square method and the RLS-LMF algorithm is further developed to construct a space-time receiver. Simulations show that this novel algorithm outperforms existing techniques in CDMA and ultra-wideband channels.

Key words: CDMA, detection, least mean fourth, space-time processing, ultra-wideband

CLC Number:

TN914.5

ZHENG Lin(1;2);OUYANG Shan(2);QIU Hong-bing(2). A space-time multiuser detection based on the RLS-LMF algorithm[J].J4, 2006, 33(5): 782-787.

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A space-time multiuser detection based on the RLS-LMF algorithm

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