北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2009, Vol. 32 ›› Issue (4): 99-103.doi: 10.13190/jbupt.200904.99.fanb

• 研究报告 • 上一篇    下一篇

译码转发中继系统中继节点选择及性能分析

范斌 王文博 林懿诚 郑侃   

  1. 北京邮电大学信息与通信工程学院,无线信号处理与系统实验室, 泛网教育部重点实验室 北京邮电大学电信工程学院 北京邮电大学信息与通信工程学院 北京邮电大学无线通信中心无线信号处理和网络实验室
  • 收稿日期:2008-11-13 修回日期:2009-05-06 出版日期:2009-08-28 发布日期:2009-08-28
  • 通讯作者: 范斌

Relay Selection and Performance Analysis in Systems with DecodeandForward Relays

  • Received:2008-11-13 Revised:2009-05-06 Online:2009-08-28 Published:2009-08-28

摘要:

在基于译码转发(DF)的多中继两跳传输系统中,为了达到系统传输速率和中继节点负载均衡的平衡, 提出基于负载均衡的中继选择方案. 同时, 利用极值理论分析了系统的平均传输速率和中继选择增益性能. 理论分析和仿真结果表明, 利用提出的中继节点选择方案, 系统可以同时满足中继负载均衡和系统传输速率的需求, 且系统传输速率和中继选择增益与系统中继数量成对数关系.

关键词: 中继节点选择, 极值理论, 中继系统, 负载均衡

Abstract:

In order to achieve a balance between the system transmit rate and fairness among relays, a loadbalance based relay selection scheme is proposed in the systems with multiple decode andforward (DF) relays. Moreover, the average transmission rate performance and the relay selection gain of the system are analyzed based on the extreme value theory. It can be seen that the requirements of both transmit rate and fairness can be satisfied with the proposed relay selection scheme. The system can achieve the relay selection gain and average transmission rate logarithmic to the relay node number.

Key words: Relay selection, The Extreme Value Theory, Relay network, Load balance