Spreading sequence design for MC-CDMA systems

被引：0

作者：

Lacatus, Catalin ^{[1
]}

Akopian, David ^{[1
]}

Shadaram, Mehdi ^{[1
]}

机构：

[1] Univ Texas San Antonio, Dept Elect & Comp Engn, San Antonio, TX 78249 USA

来源：

2007 IEEE INTERNATIONAL CONFERENCE ON SYSTEM OF SYSTEMS ENGINEERING, VOLS 1 AND 2 | 2007年

关键词：

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

The paper presents a new approach of optimal spreading sequence allocation in the uplink of a Multi-Carrier Code Division Multiple Access (MC-CDMA) system. The algorithm is implemented as a distributed optimization problem, where each user will minimize its cost function, by choosing a codeword that suits better to the interference pattern. The optimization problem is treated as a constrained problem over a convex set, for which the optimal spreading sequences are designed based on feasible direction approach. For the optimal spreading sequence, the matched filter (MF) receiver has the same performances as a minimum mean squared (MMSE) receiver in the presence of multi-access interference (MAI) and white noise. The proposed algorithm is analyzed and illustrated with numerical examples obtained from simulations.

引用

页码：267 / 271

页数：5

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