基于门限决策的SDF中继选择策略性能分析

章坚武; 蒋静; 包建荣; 姜斌

doi:10.11959/j.issn.1000-0801.2016003

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基于门限决策的SDF中继选择策略性能分析

研究与开发 | 更新时间：2024-06-05

- 基于门限决策的SDF中继选择策略性能分析
- Performance analysis of relay selection strategy with selective decode-and-forward protocol based on threshold decision
- 电信科学 2016年32卷第1期页码：18-24
- 作者机构：
  
  1. 杭州电子科技大学通信工程学院，浙江杭州310018
  2. 东南大学移动通信国家重点实验室，江苏南京210096
- 作者简介：
  
  [ "章坚武（1961-），男，博士，杭州电子科技大学教授、博士生导师，主要研究方向为空间通信、通信信号处理、认知无线电、现代信道编码及空间无线通信系统的认知软件无线电FPGA实现等。" ]
  [ "蒋静（1990-），女，杭州电子科技大学硕士生，主要研究方向为协同信号处理等。" ]
  [ "包建荣（1978-），男，博士，杭州电子科技大学副教授，主要研究方向为空间无线通信与编码等。" ]
  [ "姜斌（1980-），男，杭州电子科技大学高级实验师，主要研究方向为无线通信信号处理等。" ]
- 基金信息：
  
  浙江省自然科学基金资助项目;Natural Science Foundation of Zhejiang Province of China(LZ14F010003);国家自然科学基金资助项目;The National Natural Science Foundation of China(61471152);东南大学移动通信国家重点实验室开放研究基金资助项目;The Open Research Fund of National Mobile Communications Research Laboratory,Southeast University(2014D02)
- DOI：10.11959/j.issn.1000-0801.2016003
  中图分类号： TN929.5
- 网络出版日期：2016-01，
  
  纸质出版日期：2016-01-20
- 稿件说明：
移动端阅览
章坚武, 蒋静, 包建荣, 等. 基于门限决策的SDF中继选择策略性能分析[J]. 电信科学, 2016,32(1):18-24.

Jianwu ZHANG, Jing JIANG, Jianrong BAO, et al. Performance analysis of relay selection strategy with selective decode-and-forward protocol based on threshold decision[J]. Telecommunications science, 2016, 32(1): 18-24.
章坚武, 蒋静, 包建荣, 等. 基于门限决策的SDF中继选择策略性能分析[J]. 电信科学, 2016,32(1):18-24. DOI： 10.11959/j.issn.1000-0801.2016003.

Jianwu ZHANG, Jing JIANG, Jianrong BAO, et al. Performance analysis of relay selection strategy with selective decode-and-forward protocol based on threshold decision[J]. Telecommunications science, 2016, 32(1): 18-24. DOI： 10.11959/j.issn.1000-0801.2016003.

摘要

中继协作传输能有效克服信道衰落影响，提高分集效果。为了提高全天候协作系统的频谱效率，在选择解码转发协议的前提下，研究了基于门限决策的中继选择策略，分析了其性能，并推导了高信噪比下的中断概率和频谱效率的近似表达式。仿真表明，在低信噪比和较少中继的场景中，不同门限下的中断概率十分接近，如果协作门限增加0.09，系统频谱效率可提高0.12；在高信噪比和较多中继的场景中，不同门限下的频谱效率较为接近，当系统中断概率为10<sup>-2</sup>时，如果协作门限减少0.9，可获得约1.1 dB的信噪比增益。

Abstract

Cooperative transmission can effectively overcome performance degradation caused by channel fading and thus improve diversity effect.In order to improve the spectral efficiency of all-time cooperative

relay selection strategy with selective decode-and-forward protocol based on threshold decision was mainly investigated.The performance was also analysed and the approximate expression of the outage probability and the spectrum efficiency with high signal-to-noise（SNR）were derived.Simulation results show that under low-SNR and few relays circulations

the outage probability under different thresholds are very close.If the collaboration threshold increases by 0.09

the spectral efficiency improves by 0.12.Under high-SNR and many relays circulations

the spectral efficiency under different thresholds are similar.When the system outage probability is 10<sup>-2</sup>

the collaboration threshold decreases by 0.9 and 1.1 dB SNR gain can be obtained.

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Keywords

references

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