一种可靠的协作式频谱感知方案

高可靠性的频谱感知是认知无线电实现的基础.在认知无线电网络环境下,提出了一种可靠的合作频谱感知方案.认知网络中的独立节点分别计算频谱感知结果的可信任程度,融合中心预分选各节点的感知结果,剔除终端的错误感知数据,利用D-S证据融合方法得到最终感知结果.该方式能够克服阴影效应、衰落信道以及自私设备所造成的感知信息失真问题....

A Reliable Scheme for Cooperative Spectrum Sensing in Cognitive Radio Network

Reliable spectrum sensing is the foundation of cognitive radio networks.Due to the effects of channel fading and shadowing,individual CRs may not be able to reliably detect the existence of a primary radio,who is a licensed user for the particular band.In cognitive radio network,a useful cooperation scheme for spectrum sensing based on D-S evidence theory and pre-selecting approach is introduced.Individual sensing node calculate credibility based on sensing results,and then,data from all individual nodes ar...