Asymptotic Reduced-Rank MMSE in Asynchronous MC-DS-CDMA Systems

被引：0

作者：

Chien, Feng-Tsun ^{[1
]}

Chang, Ronald Y. ^{[2
]}

机构：

[1] Natl Chiao Tung Univ, Dept Elect Engn, Hsinchu, Taiwan

[2] Acad Sinica, Res Ctr Informat Technol Innovat, Taipei 115, Taiwan

来源：

2014 INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY AND ITS APPLICATIONS (ISITA) | 2014年

关键词：

DESIGN; DETECTORS;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We consider the design of a reduced-rank minimum mean-squared error (MMSE) receiver for asynchronous multicarrier-direct sequence-code division multiple access (MC-DS-CDMA) systems with random spreading. We focus on the asymptotic MMSE filter designs in the large system regime, i.e., both the spreading gain and the number of users approach infinity while their ratio is a finite constant and the number of subcarriers is finite. Explicit expressions for the asymptotic weights of the MMSE receiver are derived for the case where the spreading sequences are identical over different subcarriers for each user. Simulation results validate our analysis.

引用

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页码：511 / 515

页数：5

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