Cooperative Spectrum Sensing in Multiuser Cognitive Radio Networks with Best Relay Selection

P; ZHU Jia; ZHENG Bao-yu; ZOU Yu-long; SPAN

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Cooperative Spectrum Sensing in Multiuser Cognitive Radio Networks with Best Relay Selection

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- Cooperative Spectrum Sensing in Multiuser Cognitive Radio Networks with Best Relay Selection
- Acta Electronica Sinica Vol. 38, Issue 1, Pages: 92-98(2010)
- 作者机构：
  
  南京邮电大学信号处理与传输研究院,江苏,南京,210003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN92
- Published：2010
- 稿件说明：
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P, ZHU Jia, ZHENG Bao-yu, et al. Cooperative Spectrum Sensing in Multiuser Cognitive Radio Networks with Best Relay Selection[J]. Acta Electronica Sinica, 2010, 38(1): 92-98.
DOI：

P, ZHU Jia, ZHENG Bao-yu, et al. Cooperative Spectrum Sensing in Multiuser Cognitive Radio Networks with Best Relay Selection[J]. Acta Electronica Sinica, 2010, 38(1): 92-98. DOI：

摘要

<FONT face=Verdana>本文提出了一种基于最佳中继的多用户协作频谱感知方案，通过认知无线电网络中多用户间的相互协作，可以获得明显的空间分集增益，从而改善认知用户的检测性能．针对所提出的多用户协作感知方案，在瑞利衰落环境下分析了相应的系统检测概率，同时也理论推导了传统非协作方案的感知性能．根据检测概率的解析式，对非协作方案和多用户协作方案，进行了相应的数值实验和性能比较．与非协作感知方案相比，多用户协作方案能够显著提高主用户的检测概率．此外，随着候选中继用户数目增加，多用户协作方案对主用户检测概率的改善量越加明显．

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