基于可靠性的合作频谱感知传感器选择算法  

Reliability-based sensor selection algorithm for cooperative spectrum sensing

作　　者：杨理 陶洋[1] 纪瑞娟 杨柳 侯尧 YANG Li;TAO Yang;JI Rui-juan;YANG Liu;HOU Yao(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院

出　　处：《微电子学与计算机》2019年第10期54-58,共5页Microelectronics & Computer

基　　金：国家自然科学基金(61801072);重庆市科委:重庆市科学与技术委员会基础研究与前沿探索(一般)项目(cstc2018jcyjAX0344)资助

摘　　要：为了提高无线传感网中合作频谱感知的可靠性,减小阴影衰落的影响,提出了一种最大可靠性传感器选择算法.算法在考虑检测概率与虚警概率的基础上引入空间相关度来保证传感器节点冗余少,分布均匀,并根据当前节点的能量约束选择最优解输出.仿真结果表明,该算法有效地提高了频谱感知的可靠性,在传感器分布非均匀的情况下,抗阴影衰落干扰能力显著提高.In order to improve the reliability of cooperative spectrum sensingin wireless sensor networks and reduce the impact of shadow fading,a maximum reliability sensor selection algorithm(MRSSA)is proposed.MRSSA considering the detection probability and false alarm probability,the spatial correlation was introduced to ensure that the sensor nodes are less redundant and evenly distributed.The optimal solution output will be selected according to the energy constraints of the current node.The simulation results show MRSSA improves the reliability of spectrum sensing effectively.In the case of non-uniform sensor distribution,the anti-shadow fading interference capability is significantly improved.

关 键 词：无线传感网 认知无线电 合作频谱感知 阴影衰落 可靠性 

分 类 号：TN925[电子电信—通信与信息系统]