北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (4): 106-109.doi: 10.13190/jbupt.201004.106.sijb

• 研究报告 • 上一篇    下一篇

瑞利信道中存在干扰时的机会中继性能分析

司江勃, 李赞,刘增基,尹晶   

  1. 西安电子科技大学 综合业务网国家重点实验室
  • 收稿日期:2009-09-21 修回日期:2010-01-17 出版日期:2010-08-28 发布日期:2010-05-21
  • 通讯作者: 司江勃 E-mail:jbsi@xidian.edu.cn;jbsi2005@hotmail.com
  • 基金资助:

    国家级.国家自然科学基金项目

Performance Analysis of Opportunistic Relaying in  Rayleigh Fading Channels with Interference

  • Received:2009-09-21 Revised:2010-01-17 Online:2010-08-28 Published:2010-05-21

摘要:

在干扰对中继节点和目的节点都产生影响时,根据是否考虑直接传输,提出了2种最小化中断概率的机会中继协议. 考虑直接传输时,目的节点采用最大比值合并直接传输和中继传输. 推导了2种机会中继协议在独立不同分布瑞利信道中的中断概率. 仿真结果表明,就中断概率而言,考虑干扰的机会中继优于不考虑干扰的机会中继,考虑直接传输的机会中继优于不考虑直接传输的机会中继.

关键词: 机会中继, 干扰, 中断概率, 瑞利信道

Abstract:

Because of interference between both the relays and the destination, the two opportunistic relaying protocols are proposed to minimize the outage probability according to whether the direct transmission is considered or not. Moreover, if the direct transmission is taken into account, maximal ratio combining is deployed at the destination to combine the direct transmission and relay transmission. The outage probabilities of the protocols are derived over the independent nonidentically distributed Rayleigh fading channels. Simulations validate our analysis. Furthermore, in terms of outage probability, opportunistic relaying considering the interference is better than that without considering the interference, and opportunistic relaying with a direct link outperforms that without a direct link.

Key words: opportunistic relaying, interference, outage probability, Rayleigh channel