文章基本信息

标题：Exploiting Multichannel Diversity in Spectrum Sharing Systems Using Optimal Stopping Rule
本地全文：下载
作者：Xu, Yuhua ; Wu, Qihui ; Wang, Jinlong 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2012
卷号：34
期号：2
页码：272-275
DOI：10.4218/etrij.12.0211.0274
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：This letter studies the problem of exploiting multichannel diversity in a spectrum sharing system, where the secondary user (SU) sequentially explores channel state information on the licensed channels with time consumption. To maximize the expected achievable throughput for the SU, we formulate this problem as an optimal stopping problem, whose objective is to choose the right channel to stop exploration based on the observed signal-to-noise ratio sequence. Moreover, we propose a myopic but optimal rule, called one-stage look-ahead rule, to solve the stopping problem.
关键词：Cognitive radio;spectrum sharing systems;multichannel diversity;optimal stopping rule