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

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.