北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2007, Vol. 30 ›› Issue (6): 14-17.doi: 10.13190/jbupt.200706.14.022

• 论文 • 上一篇    下一篇

反馈式选择解码的协作分集性能分析

林霏1,2, 罗涛1, 乐光新1   

  1. (1. 北京邮电大学 电信工程学院,北京100876; 2. 山东轻工业学院 电子与控制学院,济南 250353)
  • 收稿日期:2006-11-29 修回日期:2007-09-06 出版日期:2007-12-31 发布日期:2007-12-31
  • 通讯作者: 林霏

Performance Analysis of Selection
Decode-and-Forward with Feedback in Cooperative
Diversity

LIN Fei1,2, LUO Tao1, YUE Guang-xin1   

  1. (1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China; 2. College of Electronic Information and Control Engineering, Shandong Institute of Light Industry, Jinan 250353, China)
  • Received:2006-11-29 Revised:2007-09-06 Online:2007-12-31 Published:2007-12-31

摘要:

在协作分集传输系统中,提出一种改进的反馈式选择解码转发方法 (FSDF),综合考虑源端-中继端与源端-目的端的信道传输特性,且由目的端给出反馈信号决定是否采用协作模式;同时得到高信噪比(SNR)下的中断概率表达式。理论分析与仿真结果证明该方法可得到满分集,在可靠性及有效性上均优于解码转发(DF)与选择解码转发(SDF)。

关键词: 协作分集, 解码转发;中断概率, 衰落信道

Abstract:

An improved selection decode-and-forward method with feedback(FSDF)is proposed in cooperative diversity system, in which both the channel gain of source-to-relay and that of source-to-destination are considered, it is based on the destination’s feedback whether the source terminal adopts the cooperative scheme or not. The formulation of outage probability is derived at high signal-to-noise ratio (SNR). Theoretical analysis and simulation results show that the proposed method can achieve full spatial diversity and will be better than decode-and-forward (DF ) and selection decode-and-forward (SDF) both in reliability and efficiency.

Key words: cooperative diversity, decode-and-forward, outage probability, fading channel

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