计算机工程与应用2011，Vol.47Issue(35)：99-102,4.DOI:10.3778/j.issn.1002-8331.2011.35.028
基于频谱异构和用户移动的频谱共享算法研究
Research on spectrum sharing algorithm based on spectrum heterogeneity and user mobility
摘要
Abstract
Spectrum sharing is envisaged to allow multiple Cognitive Radio(CR) nodes to jointly use the vacant spectrum resource for opportunistic transmission.Most previous work on the spectrum sharing do not take into account the spectrum heterogeneity, such as different transmission ranges, error rates, etc.In this paper, a spectrum sharing algorithm is presented that accommodates spectrum heterogeneity for centralized CR networks.Different types of channels have different transmis sion ranges and the CR users are static or mobile.Each user is uniquely assigned a channel while considering its channel oc cupancy time, the location of the user, and the fairness of channel access opportunity.Based on these metrics, a utility func tion is employed to allocate channels and the final objective is to maximize the total utility of system.Simulation results re veal significant improvement in reducing spectrum handoffs and other system performances can be guaranteed.关键词
认知无线电/频谱共享/频谱异构/频谱切换Key words
cognitive radio/spectrum sharing/spectrum heterogeneity/spectrum handoff分类
信息技术与安全科学引用本文复制引用
宁国勤,张静..基于频谱异构和用户移动的频谱共享算法研究[J].计算机工程与应用,2011,47(35):99-102,4.基金项目
湖北省自然科学基金(No.2009CDB096) （No.2009CDB096）
华中师范大学中央高校基本科研业务费资助项目(No.CCNU09A01007). （No.CCNU09A01007）
