电讯技术Issue(6)：740-746,7.DOI:10.3969/j.issn.1001-893x.2014.06.009
基于最优停止的认知无线网络下行频谱接入算法
Downlink Spectrum Access Algorithm Based on Optimal Stopping Theory in Cognitive Radio Networks
摘要
Abstract
To effectively balance the contradiction between the access channels sensed time and total channel throughput in cognitive radio secondary user network system,this paper proposes a spectrum access strategy which only senses partial channel channels. The strategy optimizes the total number of sensing channels and sensing time of individual channels jointly, and solves the result through optimal stopping algorithm. The al-gorithm can maximize savings while achieving larger average throughput in the sensed time. The simulation analysis and comparison with HC-MAC( Hardware Constrained-Media Access Control) algorithm show that the algorithm costs shorter sensed time and has greater throughput in the same given conditions.关键词
认知无线网络/下行频谱接入/频谱感知/最优停止算法Key words
cognitive radio network/downlink spectrum access/spectrum sensing/optimal stopping algorithm分类
信息技术与安全科学引用本文复制引用
邓国斌,沈萍,贺婧..基于最优停止的认知无线网络下行频谱接入算法[J].电讯技术,2014,(6):740-746,7.基金项目
国家自然科学基金资助项目(61121001) （61121001）
广西教育厅创新研究与实践项目(10212g10)@@@@ Foundation Items:The National Natural Science Foundation of China (No.61121001) （10212g10）
Guangxi Department of Education Research and Prac-tice Innovation Project(10212g10) （10212g10）
