多信道合作感知中基于信道可用概率的感知信道集合选择算法

摘要

The optimal algorithm of sensing time resource allocation was analyzed firstly, when the sensing channel set was given out. Then, the estimation method of the idle probability of each channel was proposed. Finally, the probability-based sensing channel selection for multi-channel cooperative sensing was given out. Analysis and simulation results both demonstrate that the proposed sensing channel selection algorithm can get the suboptimal sensing channel set rapidly with lower complexity, but the difference between the selected suboptimal sensing channel set and the optimal one is minor. The proposed algorithm can achieve higher throughput than other existing algorithms also.%首先分析了在给定感知信道集合和相应的可用概率集合条件下认知无线网络最大吞吐量的求解算法,接着给出了授权信道可用概率的估计方法,并在此基础上提出了一种基于授权信道可用概率估计的感知信道集合的次优选择算法.从分析结果与仿真结果可知,该次优选择算法与最优选择算法的性能差别不大,但是复杂度却大大降低了,另外该算法与已有算法相比可以得到更高的系统吞吐量.