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CLC number: TN929.5

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Received: 2003-09-18

Revision Accepted: 2003-12-29

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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.11 P.1428~1423


A modified multitarget adaptive array algorithm for wireless CDMA system

Author(s):  LIU Yun-hui, YANG Yu-hang

Affiliation(s):  Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200030, China

Corresponding email(s):   yhliu0819@hotmail.com

Key Words:  Smart antenna, Code division multiple access (CDMA), Minimum bit error rate (MBER), Near-far effect

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LIU Yun-hui, YANG Yu-hang. A modified multitarget adaptive array algorithm for wireless CDMA system[J]. Journal of Zhejiang University Science A, 2004, 5(11): 1428~1423.

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publisher="Zhejiang University Press & Springer",

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%DOI 10.1631/jzus.2004.1418

T1 - A modified multitarget adaptive array algorithm for wireless CDMA system
A1 - LIU Yun-hui
A1 - YANG Yu-hang
J0 - Journal of Zhejiang University Science A
VL - 5
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SP - 1428
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PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.2004.1418

The paper presents a modified least squares despread respread multitarget constant modulus algorithm (LS-DRMTCMA). The cost function of the original algorithm was modified by the minimum bit error rate (MBER) criterion. The novel algorithm tries to optimize weight vectors by directly minimizing bit error rate (BER) of code division multiple access (CDMA) mobile communication system. In order to achieve adaptive update of weight vectors, a stochastic gradient adaptive algorithm was developed by a kernel density estimator of possibility density function based on samples. Simulation results showed that the modified algorithm remarkably improves the BER performance, capacity and near-far effect resistance of a given CDMA communication system.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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[5] Godara, L.C., 1997. Applications of antenna arrays to mobile communications, part II: beam-forming and direction-of-arrival considerations. Proceedings of the IEEE, 85(8):1195-1245.

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[8] Parzen, E., 1962. On estimation of a probability density function and mode. Annals of Mathematical Statistics, 33:1065-1076.

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