[1]傅永生,沈连丰.CDMA中匹配滤波波束形成器的一种新的算法[J].东南大学学报(自然科学版),2004,34(2):148-151.[doi:10.3969/j.issn.1001-0505.2004.02.002]
 Fu Yongsheng,Shen Lianfeng.Novel algorithm of matched filter beamformer in CDMA[J].Journal of Southeast University (Natural Science Edition),2004,34(2):148-151.[doi:10.3969/j.issn.1001-0505.2004.02.002]
点击复制

CDMA中匹配滤波波束形成器的一种新的算法()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第2期
页码:
148-151
栏目:
信息与通信工程
出版日期:
2004-03-20

文章信息/Info

Title:
Novel algorithm of matched filter beamformer in CDMA
作者:
傅永生 沈连丰
东南大学移动通信国家重点实验室, 南京 210096
Author(s):
Fu Yongsheng Shen Lianfeng
National Mobile Communication Research Laboratory, Southeast University, Nanjing 210096, China
关键词:
波束形成 共轭梯度法 幂法
Keywords:
beamform conjugate gradient method power method
分类号:
TN929.533
DOI:
10.3969/j.issn.1001-0505.2004.02.002
摘要:
基于适于CDMA的匹配滤波波束形成准则,提出使用幂法计算权矢量的波束形成的新方法.根据相关阵为对称正定阵、特征值全为正数和最大特征值远大于第二大特征值的特点,通过幂迭代的方法求得最大特征值和最大特征矢量,进而进行波束形成.该算法比已有的共轭梯度法方法收敛速度快,每次迭代的乘法数由O(5N2+25N)减少到O(N2+N)2.本文从理论上分析和仿真验证了该算法收敛特性与干扰信号功率、信噪比和扩频比的关系.
Abstract:
Based on the matched filter beamforming criterion in CDMA, a novel method called power method is proposed to compute the weight vector to beamform. For the correlation of matrix is symmetric positive,all eigenvalue positive valued, and the largest eigenvalue being much larger than the second largest eigenvalue, the largest eigenvalue and the largest eigenvector can be obtained by power method, and beamforming can be done.This method has the advantage of faster convergence than the conjugate gradient method and the computation load of multiplication for each iteration of power reduce from O(5N2+25N) to O(N2+N).2 The relation of the convergence of this algorithm with the spreading rate, interferential power, and the SNR(signal noise rate)is analyzed theoretically and examined through simulation.

参考文献/References:

[1] Naguib Ayman F, Paulraj Arogyaswami,Kailath Thomas. Capacity improvement with base-station antenna arrays in cellular CDMA [J].IEEE Transaction on Vehicular Technology,1994,43(3):691-698.
[2] Godara Lal C.Application of antenna arrays to mobile communications,Part Ⅱ:beam-forming and direction-of-arrival considerations [J].Proceeding of the IEEE, 1997,85(8):1195-1245.
[3] Alam Fakhrul,Zahid Kazi Abu.Performance comparison between pilot symbol assisted and blind beamformer-rake receivers at the reverse link of third generation CDMA system [J].VTC,2001,1:353-357.
[4] Choi Jinho. Pilot channel-aided techniques to compute the beamforming vector for CDMA systems with antenna array [J]. IEEE Transaction on Vehicular Technology, 2000,49(5):1760-1775.
[5] Naguib A F. Adaptive antennas for CDMA wireless networks [D].Standford:Standford University,1996.84-85.
[6] Thompson John S, Grant Peter M,Mulgrew B.Performance of antenna array receiver algorithms for CDMA [J]. Signal Processing,1998, 68(1):23-41.
[7] Choi Seungwon, Yun Dongun.Design of adaptive antenna array for tracking the source of maximum power and its application to CDM mobile communication [J].IEEE Transaction on Antenna and Propagation,1997,45(9):1393-1404.
[8] Choi Seungwon, Shim Donghee.A novel adaptive beamforming algorithm for a smart antenna system in a CDMA mobile communication environment [J]. IEEE Transaction on Vehicular Technology,2000,49(5):1793-1806.

相似文献/References:

[1]周后型,洪伟.介质柱二维电磁散射MoM-CG-FFT数值方案的改进[J].东南大学学报(自然科学版),2002,32(2):156.[doi:10.3969/j.issn.1001-0505.2002.02.002]
 Zhou Houxing,Hong Wei.Improvement of MoM-CG-FFT scheme for EM scattering from an infinite dielectric cylinder[J].Journal of Southeast University (Natural Science Edition),2002,32(2):156.[doi:10.3969/j.issn.1001-0505.2002.02.002]

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(60072016)、教育部科学技术研究重点资助项目(重点02171).
作者简介: 傅永生(1973—),男,博士生; 沈连丰(联系人),男,教授,博士生导师,lfshen@seu.edu.cn.
更新日期/Last Update: 2004-03-20