Soft decode-and-forward cooperative communication with distributed space-time coding

被引：2

作者：

Huo, Peng ^{[1
]}

Cao, Lei ^{[1
]}

机构：

[1] Univ Mississippi, Dept Elect Engn, Oxford, MS 38677 USA

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2013年 / 67卷 / 10期

关键词：

Distributed space-time codes; Soft decode-and-forward (SDF); Coded cooperative system; Turbo decoding; DIVERSITY;

D O I：

10.1016/j.aeue.2013.04.009

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：

In existing soft decode-and-forward (SDF) cooperative communication systems, the source node is idling in the second time phase while the relay transmits the soft information. In fact, the source can transmit the hard information that cooperates with the relay's soft information using distributed space-time block codes (DSTBC). In this paper, we theoretically derive the detection performance in the second time phase by either using or not using the DSTBC based on the assumption that the soft information can be approximated by Gaussian distribution. This result also enables the optimal power allocation between the source and the relay in the second time phase. Finally, we show via simulation that the advantage of using DSTBC in the second time phase leads to the overall performance improvement of the coded cooperative system. Published by Elsevier GmbH.

引用

页码：861 / 867

页数：7

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