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Effect of Primary User Traffic on Throughput for Novel Cognitive Radios
Author(s): 
Pages: 130-134
Year: Issue:  23
Journal: Video Engineering

Keyword:  cognitive radioprimary user trafficspectrum sensingopportunistic spectrum accessmaximize throughput;
Abstract: 在机会频谱接入认知无线电系统中,认知用户只有在通过感知确定信道空闲时才可以接入授权信道,因此频谱感知对于系统性能影响非常重要.提出了基于新帧结构的四元频谱感知模型,考虑主用户活跃性对认知网络吞吐量的影响,采用可同时最大化感知和数据传输时间的新帧结构模型,不需要考虑感知和吞吐量的均衡.理论分析新模型下感知时间、主用户活跃性、目标检测概率以及主用户接收信噪比对系统吞吐量的影响,并与传统模型进行了对比.
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