基于序贯检测的认知无线电系统的吞吐量优化  

Throughput Optimization of Cognitive Radio Based on Sequential Detection

作　　者：张雯[1] 杨家玮[1] 闫琦[1] 肖丽媛[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室信科所,西安710071

出　　处：《计算机科学》2011年第9期76-78,99,共4页Computer Science

基　　金：国家973计划项目(2009CB320404);国家自然科学基金(60902032;60902033)资助

摘　　要：研究了认知无线电用户采用序贯检测时认知系统吞吐量的优化问题。首先给出了认知无线电中序贯检测器的形式;然后在充分保护主用户的条件下,建立了系统吞吐量的数学模型,并利用最优化理论证明了存在唯一最优的参数设置,它可使吞吐量达到最大;最后给出最优参数的搜索方法。The throughput optimization of cognitive radio based on sequential detection was studied.The form of sequential detection in cognitive radio was given,then the mathematical model of throughput was established with the constraint that the primary users are sufficiently protected.Furthermore,it is proved that there is a unique optimal parameter setting which achieves the maximal throughput by optimization theory.At last,a searching method was given to obtain the optimal parameter setting.

关 键 词：认知无线电 频谱检测 序贯检测 检测时间 吞吐量 

分 类 号：TN911.23[电子电信—通信与信息系统]