计算机应用与软件Issue(10)：111-115,5.DOI:10.3969/j.issn.1000-386x.2014.10.026
基于PO MDP的认知无线网络次用户多时隙信道选择算法
POMDP-BASED CHANNEL SELECTION ALGORITHM FOR MULTI-SLOT SU SYSTEM IN COGNITIVE RADIO NETWORKS
摘要
Abstract
In order to maximise the throughput of secondary users (SU)system in cognitive radio networks and to reduce the calculation amount in channel selection process at the same time,in the paper we utilise partially observable Markov decision process (POMDP)theory to depict SUs’channel selection process in SU multi-slot system in multiple primary users channels,and present the corresponding channel selection algorithm of cognitive radio networks.At the beginning of each time slot,SUs select part of the channels to perceive,and select different transmission power to access the channel afterwards based on perception results,for those channels haven’t been perceived,SUs can access directly.In the paper we also present the optimal policy and suboptimal policy for solutions of POMDP problem.Through numerical analysis and comparison on optimal policy,suboptimal policy and random policy under different simulation environments,we demonstrate the effectiveness of channel selection algorithm designed in the paper.关键词
认知无线网络/信道选择/POMDP/策略Key words
Cognitive radio networks/Channel selection/POMDP/Policy分类
信息技术与安全科学引用本文复制引用
岳晓红..基于PO MDP的认知无线网络次用户多时隙信道选择算法[J].计算机应用与软件,2014,(10):111-115,5.基金项目
甘肃省科技计划项目（1118RJZA224）。 （）
