认知无线电下航空通信频谱信道分配方法

在现代航空通信,尤其是以机场周边、战争区域等通信信道使用频繁并且各种有源或者无源干扰较大的通信环境下,传统的通信信道分配方法很难满足高速率大容量通信的需求。针对这种情况,提出了一种基于认知无线电的动态航空通信频谱信道分配方法。该方法利用通信延时,信噪比门限值和频谱分配效应等级来构建一种以通信质量为标准的反馈频谱分配模型,并利用该模型动态修正基于功率的信道分配方法。仿真从信号接入率和分配函数收敛速度两方面分析了所提出的方法、图色理论频谱信道分配方法和博弈论频谱信道分配方法的性能,结果表明,所提出的方法具有更高的信号接入率和更快的收敛速度。

spectrum allocation algorithm of aeronautical communication in cognitive radio system

In modern aeronautical communication environment, the spectrum resource is becoming shortage due to the larger of active and passive interference, especially in the war zones and airport areas. In view of this situation, this paper proposes a dynamic adoptive spectrum allocation algorithm of aeronautical communication in cognitive radio. The algorithm utilizes the communication delay, threshold of signal to noise ratio and the spectrum allocation effect level to construct the feedback spectrum allocation model under maximum value of communication quality. Then the model is adopted to revise the parameter of spectrum allocation algorithm. The simulation results show that cooperation of our proposed spectrum allocation, graph coloring theory spectrum allocation algorithm and the game theory spectrum allocation algorithm, our proposed algorithm has faster convergence speed and higher signal access rate.