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吴伟陵

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期刊论文

A daptive Algorithm Based on Pilot-Channel for MMSE MULTIUSER Detection in Downlink CDMA*

吴伟陵Yi WANG† Jun WU† and Weiling WU† Nonmembers

IEICE TRANS. FUNDAMENTALS: VOL.E83-A. NO.11 NOVEMBER 2000,-0001,():

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摘要/描述

A novel adaptive algorithin based on pilot chan-nel (PCA) for MMSE muliuser detcction in downlink CDMA is proposed in this paper. This algorithm ases the information in pilot channel to compute the desired weight vector dieetly. Compared with conventional adaptive algorithms [7] and blind algorithms, it does not require training sequences nor chaunel estimation. Analysis shows that the weight vector obteined by the PCA algorithm converges to the Wiener solution globally and its computational complexity is O (N2). Simulation results show that the. PCA algorithm can adapt rapidly to the changing en-vironment. The steady state performance can be enhanced by increasing sthe transmitted power in pilot channel, but is worse than that of conventional reeursive least-square (RLS) algorithm in decision-directed mode. A tso, performance of the adaptive MMSE detcctor is much better than that of conventional RAKE receiver

版权说明:以下全部内容由吴伟陵上传于   2005年02月24日 23时14分25秒,版权归本人所有。

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