基于追踪定位的认知频谱感知解决方案  

Cognitive radio frequency sense solution based on tracing location

作　　者：汪一鸣[1] 周刘蕾[1] 

机构地区：[1]苏州大学电子信息学院,江苏苏州215006

出　　处：《通信学报》2010年第11期117-122,129,共7页Journal on Communications

基　　金：国家自然科学基金资助项目(60872003);苏州市应用基础研究计划基金资助项目(SYJG0925);江苏省高校自然科学研究基金资助项目(10KJB510024);博士学科点专项科研基金资助项目(20093201110005)~~

摘　　要：为了解决动态频谱资源管理中存在的暴露终端和隐藏终端问题,提高频谱感知的有效性和可靠性,增加频谱资源利用率,分别针对视距和非视距信道环境,提出一种基于双站协作、逐跳追踪定位的频谱感知解决方案。该方案通过选择协作用户和改进的质心算法,获得较精确的用户定位,进而判断并逼近最终目标用户,直至确定认知用户的频率使用权。仿真结果和理论分析进一步验证了所提方案的可行性。A frequency sense solution based on the double-station cooperation and multi-hop tracing localization was presented for resolving the hidden and exposed problems in the dynamic spectrum resource management so as to improve reliability and efficiency of the frequency sense and increase the utilization of spectrum.In this scheme,the secondary user could detect primary user’s existing by an improved centroid localization algorithm cooperated with a known position user.The detailed steps were proposed,the simulation results were discussed and the performance of the tracing localization was analyzed.

关 键 词：暴露终端 隐藏终端 追踪定位 频谱感知 

分 类 号：TN918[电子电信—通信与信息系统]