| 一种认知无线网络中的协作感知优化方法 |
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| 引用本文： | 沈博,史浩山,王茹. 一种认知无线网络中的协作感知优化方法[J]. 现代电子技术, 2011, 34(3): 38-41 |
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| 作者姓名： | 沈博 史浩山 王茹 |
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| 作者单位： | 1. 西北工业大学,电子信息学院,陕西,西安,710129
2. 长安大学,信息工程学院,陕西,西安,710064 |
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| 摘 要： | 认知无线电技术能够显著提高频谱资源的利用率，因此越来越受到学术界的关注。频谱感知是认知无线电的基础，一方面它要求能够快速找到可用频谱，另一方面当授权用户返回时又要求能够快速释放信道避免干扰。提出了一种认知无线网络中多用户协作感知分级方法，并通过数学推导给出最优的分级策略。仿真结果表明，采用所提出的协作频谱感知方法，能够提高认知无线网络的吞吐量。
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| 关 键 词： | 认知无线电 能量检测 协作频谱感知 多用户分集 |
Optimization Approach for Cooperative Spectrum Sensing in Cognitive Radio Network |
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| SHEN Bo,SHI Hao-shan,WANG Ru. Optimization Approach for Cooperative Spectrum Sensing in Cognitive Radio Network[J]. Modern Electronic Technique, 2011, 34(3): 38-41 |
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| Authors: | SHEN Bo SHI Hao-shan WANG Ru |
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| Affiliation: | SHEN Bo1,SHI Hao-shan1,WANG Ru2(1.School of Electronics and Information,Northwestern Polytechnical University,Xi'an 710129,China,2.School of Information Engineering,Chang'an University,Xi'an 710064,China) |
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| Abstract: | Cognitive radio is being investigated widely as a mean to increase the efficiency of spectrum usage.Spectrum sensing is of significant importance in cognitive radio network.There are two factors associated with spectrum sensing: determine which portions of the spectrum are available rapidly and vacate the spectrum when a licensed user is appeared.A multilayer hierarchy technique in implementing the multiuser cooperative spectrum sensing is proposed,and this technique is proved mathematically.Computer simula... |
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| Keywords: | cognitive radio energy detection cooperative spectrum sensing multiuser diversity |
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