基于信任度函数的认知无线电频谱感知算法研究

A research on wireless spectrum sensing algorithm based on belief degree function

认知无线电能有效地利用有限的频谱资源,实现灵活的资源配置和工作模式的调整。介绍了信任度函数,分析了具体的感知融合判决规则的特点,并结合无线通信的具体环境,提出了基于信任度函数的频谱感知算法。该算法是一种复杂度低并且可提高频谱感知性能的算法。仿真结果表明,基于信任度函数的频谱感知算法得到的结果更可靠、更精确。

The use of cognitive radio can utilize the limited spectrum resources effectively, achieve flexible resources allocation and adjustment of working model.The article described the belief degree function, analyzed characteristics of perception fusion deci- sion rules, combined with specific environment of wireless communication, proposed spectrum sensing algorithm based on belief de- gree function. This is a low complexity of algorithm and can improve the performance of spectrum sensing. The simulation shows that the result based on spectrum sensing algorithm based on belief degree function is more reliable and more accurate.