Blind adaptive code-constrained constant modulus algorithms for CDMA interference suppression in multipath channels

被引：42

作者：

de Lamare, RC ^{[1
]}

Sampaio-Neto, R ^{[1
]}

机构：

[1] Pontificia Univ Catolica Rio de Janeiro, CETUC, BR-22453900 Rio De Janeiro, Brazil

来源：

IEEE COMMUNICATIONS LETTERS | 2005年 / 9卷 / 04期

关键词：

interference suppression; multiuser detection; DS-CDMA; constant modulus cost function; blind adaptive algorithms;

D O I：

10.1109/LCOMM.2005.04022

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A code-constrained constant modulus (CCM) design criterion for linear receivers is investigated for direct sequence code division multiple access (DS-CDMA) in multipath channels based on constrained optimization techniques. A computationally efficient recursive least squares (RLS) type algorithm for jointly estimating the parameters of the channel and the receiver is developed in order to suppress multiaccess (MAI) and inter-symbol interference (ISI). An analysis of the method examines its convergence properties and simulations under non-stationary environments show that the novel algorithms outperform existent techniques.

引用

页码：334 / 336

页数：3

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