Performance of Large CDMA Random Access Systems with Retransmission Diversity over Fading Channels

被引：0

作者：

Yu, Kai ^{[1
]}

Sun, Yi ^{[2
]}

Fan, Pingzhi ^{[1
]}

Lei, Xianfu ^{[1
]}

机构：

[1] Southwest Jiaotong Univ, Inst Mobile Commun, Chengdu 610031, Sichuan, Peoples R China

[2] CUNY, City Coll, Dept Elect Engn, New York, NY 10031 USA

来源：

2009 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-5 | 2009年

基金：

美国国家科学基金会;

关键词：

CDMA; fading channel; random spreading sequence; retransmission diversity; WIRELESS NETWORKS;

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 random access systems, exploiting retransmission diversity (RD), over large random spreading CDMA channel subject to fading is investigated, under the assumption of infinite number of users and infinite spreading gain but with their ratio converging to a constant. The SIR, throughput and spectrum efficiency are analyzed. Simulation and numerical results show that RD exploitation can significantly increase the throughput and spectrum efficiency in channels both with and without fading.

引用

页码：180 / +

页数：3

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