机构地区: 哈尔滨工业大学
出 处: 《通信技术》 2009年第1期12-14,共3页
摘 要: 在多用户认知无线电系统中,针对认知无线电联合频谱感知中用于传递感知信息的控制信道受限的问题,分析比较了纽曼-皮尔逊检测器和"K"秩法检测器的检测性能及其对控制信道的要求。仿真结果表明在设计联合频谱感知检测器时,需要在提高检测性能和降低对控制信道资源需求两方面进行综合考虑来选择满足系统设计要求的检测方法。 In distributed cognitive radio systems, the bandwidth for reporting sensing information is limited by the uncertainty of the control channel. The performance of NP detector and counting rule detector are analyzed theoretically. The simulation results show that, for designing a detector in distributed spectrum sensing, a tradeoff between the amount of sensing information and the performance of detectors should be taken into account carefully.