过时信道状态下机会双向中继选择算法

doi:10.13190/j.jbupt.2014.06.009

北京邮电大学学报 ›› 2014, Vol. 37 ›› Issue (6): 44-48.doi: 10.13190/j.jbupt.2014.06.009

过时信道状态下机会双向中继选择算法

欧静兰¹, 吴皓威², 邹玉涛¹, 胡亚文¹

1. 重庆大学通信工程学院, 重庆 400044;
2. 重庆大学飞行器测控与通信教育部重点实验室, 重庆 400044

收稿日期:2013-10-18 出版日期:2014-12-28 发布日期:2014-10-17
作者简介:欧静兰(1981-),女,讲师,硕士生导师,E-mail:oujinglan@cqu.edu.cn.
基金资助:
重庆大学中央高校基本科研业务费面上项目(CDJZR12160009, 106112013CDJZR160001)和重点项目(106112013CDJZR165502)

Opportunistic Two-Way Relay Selection Scheme with Outdated Channel State Information

OU Jing-lan¹, WU Hao-wei², ZOU Yu-tao¹, HU Ya-wen¹

1. College of Communications Engineering, Chongqing University, Chongqing 400044, China;
2. Key Laboratory of Aerocraft Tracking Telemetering and Command and Communication, Ministry of Education, Chongqing University, Chongqing 400044, China

Received:2013-10-18 Online:2014-12-28 Published:2014-10-17

摘要/Abstract

摘要：

提出了一种针对过时信道状态下机会双向中继系统的第N最优中继选择算法. 分析了该算法在过时信道状态下的中断率性能,即通过中继选择时刻信噪比的概率密度函数和以它为条件的数据传输时刻信噪比的条件概率密度函数,确定数据传输时刻信噪比的概率密度函数,给出系统中断率下界的闭式表达及其在高信噪比下的近似值. 仿真结果表明,新算法的中断率理论结果同蒙特卡罗仿真结果相重合,且在高信噪比下,其近似表达结果能很好地逼近理论结果.

关键词: 协同通信, 过时信道状态信息, 机会双向中继, 中继选择, 中断率

Abstract:

Under the outdated channel state information, a scheme of the N-th best relay selection was proposed for the N-th best relay adoption in opportunistic two-way relay cooperative networks. The outage performance was discussed. The closed-form lower bound of the outage probability and its asymptotic expression for the high signal-to-noise ratio (SNR) regime were given based on the probability density function (PDF) of the SNR for the data transmission instant, which is obtained from the PDF of the SNR for the relay selection instant and the conditional PDF of the SNR for the data transmission instant. Simulations show that the analyses are close to the simulated ones, and the asymptotic results very well match the simulated ones in the high SNR regime.

Key words: cooperative communications, outdated channel state information, opportunistic two-way relaying, relay selection, outage probability

中图分类号:

TN925

欧静兰, 吴皓威, 邹玉涛, 胡亚文. 过时信道状态下机会双向中继选择算法[J]. 北京邮电大学学报, 2014, 37(6): 44-48.

OU Jing-lan, WU Hao-wei, ZOU Yu-tao, HU Ya-wen. Opportunistic Two-Way Relay Selection Scheme with Outdated Channel State Information[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2014, 37(6): 44-48.

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过时信道状态下机会双向中继选择算法

Opportunistic Two-Way Relay Selection Scheme with Outdated Channel State Information

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