基于分布式检测和协作的自适应频谱感知机制

对当前备受关注的认知无线电多点协作频谱感知技术进行了系统归纳与总结.对频谱感知基本问题进行研究,指出了低信噪比情况下单节点检测存在的局限性;接着着重对基于能量检测的多点协作检测技术和多种数据合并算法等最新的研究情况进行了介绍和评价;最后提出了一种具有自适应优化功能的协作频谱感知机制,对控制信道和检测判决信道采用两种控制方式,采用较为稳健的拓扑控制方式,提高了检测网络的稳定性和运作效率.

An Adaptive Cooperative Spectrum Sensing Scheme with Dependent Control Channel

Spectrum sensing has been identified as one of great important functionality,which avoids interference to primary users,by reliably detecting primary user signals in Cognitive Radio /Opportunistic Spectrum Access Networks.In this paper,an adaptive cooperative spectrum sensing scheme with control channel dependent from CR networks is proposed.To the credibility differences of local sensing is taken into account during the combination process at Access Point to combine all local decision data from different s...