An Efficient Successive Relaying Protocol for Multiple-Relay Cooperative Networks

被引：36

作者：

Hu, Yongxu ^{[1
]}

Li, Kwok Hung ^{[1
]}

Teh, Kah Chan ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2012年 / 11卷 / 05期

关键词：

Diversity gain; multiplexing gain; outage probability; relay selection; successive relaying; PERFORMANCE ANALYSIS; WIRELESS NETWORKS; DIVERSITY; SELECTION; CHANNELS; TRADEOFF;

D O I：

10.1109/TWC.2012.030512.111353

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：

We propose an efficient successive relaying (SR) transmission protocol for multiple-relay cooperative systems under the half-duplex constraint. In this protocol, the process of relay selection is conducted once the instantaneous channel state information changes. During each channel coherent interval, the source keeps transmitting newly generated messages, and two selected relays successively decode and forward the source's information to the destination. In particular, in one time slot, a selected relay jointly decodes both signals transmitted from the source and the other selected relay. In the next time slot, this relay forwards the superposition of these two decoded signals. The destination jointly decodes messages at the end of each interval. The lower bound of outage probability is derived in a closed-form expression and the diversity-multiplexing trade-off (DMT) performance is characterized as well. It is demonstrated by the numerical results that the proposed SR protocol is capable of achieving both full diversity gain and high multiplexing gain.

引用

页码：1892 / 1899

页数：8

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