基于能量检测的自适应通信频谱感知算法  

Adaptive Communication Spectrum Sensing Algorithm Based on Energy Detection

作　　者：石伟宏 唐韬 赵润晖[1,2,3] 文红 冯学炜 SHI Weihong;TANG Tao;ZHAO Runhui;WEN Hong;FENG Xuewei(University of Electronic Science&Technology of China,Chengdu Sichuan 611731,China;Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province,Chengdu Sichuan 611731,China;Sichuan Provincial Engineering Research Center of Communication Technology for Intelligent IoT,Chengdu Sichuan 611731,China)

机构地区：[1]电子科技大学航空航天学院,四川成都611731 [2]电子科技大学飞行器集群智能感知与协同控制四川省重点实验室,四川成都611731 [3]电子科技大学四川省智慧物联通信技术工程研究中心,四川成都611731

出　　处：《通信技术》2024年第4期375-378,共4页Communications Technology

基　　金：国家自然科学基金(U23B2021,62201132)。

摘　　要：在传统的能量检测算法的基础上,对于无法准确测量噪声功率的信号,提出了一种基于能量检测的自适应通信频谱感知算法。该算法考虑了在噪声功率估计值不准确时利用噪声功率计算能量检测判决门限的问题,能够对先验信息较少和噪声功率无法准确估计的信号进行自适应通信频谱感知。仿真结果表明,基于能量检测的自适应通信频谱感知算法可以有效提高对于信号的频谱感知性能,在合理设置判决系数的条件下,算法可以对信号进行有效检测和感知。Based on the conventional energy detection algorithm,an adaptive communication spectrum sensing algorithm based on energy detection is proposed for signals for which the noise power cannot be accurately measured.The algorithm considers the problem of using the noise power to calculate the energy detection judgment threshold when the noise power estimation value is inaccurate,and it is able to perform adaptive communication spectrum sensing for signals with less a priori information and the noise power cannot be estimated accurately.Simulation results indicate that the adaptive communication spectrum sensing algorithm based on energy detection can effectively improve the performance of spectrum sensing for signals,and the algorithm can effectively detect and sense signals under the condition of reasonable setting of judgment coefficients.

关 键 词：认知无线电 频谱感知 能量检测 自适应 

分 类 号：TN929[电子电信—通信与信息系统]