摘要
新型电力无线宽带系统是为满足智能配用电系统的通信需求,在电力专用230 MHz频谱资源上研究开发的电力无线专网,该系统在应用过程中可能会存在与230数传电台共用同一段频谱的情况。为保证两个系统同时稳定、高效地运行,提出一种基于信任度的协作频谱感知算法。根据用户行为特点将感知用户分为受信感知用户、失效用户和干扰用户,并对非受信用户给出相应的判定方法;分析受信用户本地检测结果与参与协作的感知用户及其通信信道信噪比之间的关系,进而定义出各感知用户可信度的权重,并在此基础上提出一种基于信任度的协作频谱感知算法。仿真结果表明,相比传统的硬判决协作频谱检测方法,基于感知用户信任度的协作感知算法能获得更高的检测性能。
To fulfill the communication needs of smart distribution and utilization system, a novel power dedicated network has been developed. The system faces a problem that it may operate coexisted with a 230 data transceiver system. In order to keep the two systems operating stably and efficient/y at the same time, a trust-based cooperative spectrum sensing algorithm was presented. According to the characteristics of user behavior, cognitive radio users were classified into fiduciary users, lapsed users and malicious users. By analyzing the relationship among detection result, credibility of cognitive radio users and communication channel signal-to-noise ratio, the credibility weight of cognitive radio users was given, and a trust-based cooperative spectrum sensing algorithm was proposed. The simulation results show that the algorithm improves detection performance effectively.
出处
《电信科学》
北大核心
2015年第3期136-141,共6页
Telecommunications Science
关键词
认知无线电
电力无线通信
频谱感知
信任度
cognitive radio, electric power wireless communication, spectrum sensing, trust
