Adaptive space-time reduced-rank interference suppression for asynchronous DS-CDMA based on a diversity-combined decimation and interpolation scheme

被引：0

作者：

de Lamare, Rodrigo C. ^{[1
]}

Sampaio-Neto, Raimundo ^{[2
]}

机构：

[1] Univ York, Commun Res Grp, Dept Elect, York Y010 5DD, N Yorkshire, England

[2] CETUC, B-22453 900 Rio De Janeiro, Brazil

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-14 | 2007年

关键词：

D O I：

10.1109/ICC.2007.467

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An adaptive low-complexity space-time reduced-rank processor is proposed for interference suppression in asynchronous DS-CDMA systems based on a diversity-combined decimation and interpolation method. The novel design approach for the processor employs an iterative procedure to jointly optimize the interpolation, decimation and estimation tasks for reduced-rank parameter estimation. We describe joint iterative least squares (1,S) design parameter estimators, propose alternative decimation structures, including the optimal decimation scheme, and develop low complexity adaptive recursive least squares (RLS) algorithms for the proposed structure. Linear space-time receivers with antenna arrays based on the proposed reduced-rank processor are presented and investigated for mitigating multi-access interference (MAI) and intersymbol interference (ISI) in an asynchronous DS-CDMA system uplink scenario.

引用

页码：2809 / +

页数：2

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