多中继去噪重传物理层网络编码自适应分集策略

doi:10.11959/j.issn.1000-436x.2017031

通信学报 ›› 2017, Vol. 38 ›› Issue (2): 81-93.doi: 10.11959/j.issn.1000-436x.2017031

多中继去噪重传物理层网络编码自适应分集策略

高锐锋¹,吉晓东^1,²,包志华^1,²(),张士兵¹,徐晨^1,²

¹ 南通大学电子信息学院，江苏南通 226019
² 南通先进通信技术研究院，江苏南通 226019

修回日期:2016-11-28 出版日期:2017-02-01 发布日期:2017-07-20
作者简介:高锐锋（1987-），男，江苏南通人，南通大学博士生、讲师，主要研究方向为协作中继、认知无线电以及物理层安全技术。|吉晓东（1979-），男，江苏南通人，博士，南通大学副教授，主要研究方向为协作中继、物理层安全以及认知无线电技术。|包志华（1955-），男，江苏南通人，南通大学教授，主要研究方向为现代通信理论与技术、通信专用集成电路设计等。|张士兵（1962-），男，江苏南通人，博士，南通大学教授，主要研究方向为认知无线电技术、宽带数字通信与通信信号处理。|徐晨（1960-），男，江苏南通人，南通大学教授，主要研究方向为宽带数字通信、通信信号处理。
基金资助:
国家自然科学基金资助项目(61371111);国家自然科学基金资助项目(61371112);国家自然科学基金资助项目(61401238);江苏省自然科学基金资助项目(BK20140433);江苏省研究生创新课题基金资助项目(KYZZ16-0353)

Denoise-and-forward based adaptive diversity scheme for physical-layer network coding with multiple relay node

Rui-feng GAO¹,Xiao-dong JI^1,²,Zhi-hua BAO^1,²(),Shi-bing ZHANG¹,Chen XU^1,²

¹ School of Electronics and Information,Nantong University,Nantong 226019,China
² Nantong Research Institute for Advanced Communication Technologies,Nantong 226019,China

Revised:2016-11-28 Online:2017-02-01 Published:2017-07-20
Supported by:
The National Natural Science Foundation of China(61371111);The National Natural Science Foundation of China(61371112);The National Natural Science Foundation of China(61401238);The Natural Science Foundation of Jiangsu Province(BK20140433);The Postgraduate Innovation Program of Scientific Research of Jiangsu Province(KYZZ16-0353)

摘要/Abstract

摘要：

研究了频率非选择性瑞利衰落信道中的物理层网络编码系统容量问题。理论推导了基于解噪重传协议的系统容量，根据容量解析式给出了系统和容量最大化的2个条件表达式，提出了一种最大化系统和容量的自适应分集策略。在瑞利衰落信道环境下，通过理论分析给出所有中继链路特性均属于同一情况下的中断概率闭合解析式，同时也理论推导了一般放大重传和直接传输系统中断概率解析式。在此基础上，完成了数值仿真实验，结果表明所提策略的中断性能与非自适应系统、一般放大重传和直接传输系统相比有较大优势。

关键词: 物理层网络编码, 自适应分集, 中继选择, 中断概率

Abstract:

The capacity issue of a denoise-and-forward(DNF) protocol was focused on based PNC system of frequency non-selective Rayleigh fading channel.First,the total sum-rate of the system was derived.With the derived sum-rate expression,two policies maximizing the system sum-rate are proposed.On this basis,a novel adaptive diversity scheme was proposed.Closed-form expressions of the system outage probability with the new proposed scheme as well as the amplify-and-forward (AF) based PNC system and the conventional direct transmission were derived over frequency-nonselective Rayleigh fading channels.Simulation experiments are conducted and the results show that the outage performance of the system can be im-proved significantly compared to the AF based PNC system and the conventional direct transmission scheme.

Key words: physical-layer network coding, adaptive diversity, relay selection, outage probability

中图分类号:

TN925

高锐锋,吉晓东,包志华,张士兵,徐晨. 多中继去噪重传物理层网络编码自适应分集策略[J]. 通信学报, 2017, 38(2): 81-93.

Rui-feng GAO,Xiao-dong JI,Zhi-hua BAO,Shi-bing ZHANG,Chen XU. Denoise-and-forward based adaptive diversity scheme for physical-layer network coding with multiple relay node[J]. Journal on Communications, 2017, 38(2): 81-93.

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多中继去噪重传物理层网络编码自适应分集策略

Denoise-and-forward based adaptive diversity scheme for physical-layer network coding with multiple relay node

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