文献类型：期刊文献

中文题名：QoS优化筛选认知系统频谱资源差错控制

英文题名：Method of Cognitive System Spectrum Resources Error Control Based on QoS Optimization Screening

作者：陈燕秀

第一作者：陈燕秀

机构：[1]贵州理工学院电气工程学院

第一机构：贵州理工学院电气与信息工程学院

年份：2014

卷号：30

期号：8

起止页码：185-187

中文期刊名：科技通报

外文期刊名：Bulletin of Science and Technology

收录：CSTPCD;;北大核心:【北大核心2011】；

语种：中文

中文关键词：QoS;无线电;频谱感知;差错控制

外文关键词：QoS wireless spectrum sensing error control

摘要：无线电认知系统频谱资源差错控制是决定无线电传输和通信质量优劣的关键。传统的无功率控制方法由于需要使用授权用户的先验信息,出现无线电频谱资源规模集群和感知预留,通信过程中,出现丢包率高和堵塞,频谱感知差错控制效率低下。考虑无线信道的时变特性,采用QoS优化筛选控制的方法,提出一种基于协作用户频谱感知模型的无线电认知系统频谱资源差错控制方法,采用CS.MA/CA信道访问MAC协议进行信道建模,得到QoS控制过程的时间线。基于能量检测K/N判决准则,建立无线电频谱感知差错控制判决模型。实验结果表明,采用该方法进行无线电认知系统频谱资源差错控制,频谱感知网络负载降低,传输时延减少,提高了资源包的接收率。
Cognitive radio spectrum resource error control system is the key of radio transmission and communication quali-ty. The traditional no power control methods need the prior information of licensed user, which resulted in scale cluster and resource reservation of radio spectrum. In the communication process, high packet loss rate and clogging, the spectrum sensing error control efficiency is low.Considering the time-varying characteristics of wireless channel, the QoS optimiza-tion screening control method is used, and the improcved radio cognitive system error control method is proposed based on cooperative user spectrum sensing model, the CSMA/CA channel is taken for accessing the MAC protocol and establish the channel model, the QoS control time line is obtained. Based on the energy detection K/N decision criterion, the radio spec-trum cognitive error control model is established. Simulation results show that, the method can reduce the load spectrum sensing network, and the transmission delay is reduced, the resource packet receiving rate is improved.