全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

一种新型认知无线电信道状态的预测算法

DOI: 10.11830/ISSN.1000-5013.2010.05.0521, PP. 521-525

Keywords: 认知无线电,多无线电,多信道,马尔科夫模型,频谱侦测

Full-Text   Cite this paper   Add to My Lib

Abstract:

基于部分可测马尔科夫决策过程(POMDP)模型,结合认知无线电频谱侦测技术,提出一种新的多无线电多信道环境下认知无线电检测信道算法.该算法通过对信道状态历史信息的分析,推导出信道信念状态的初始分布和转移概率;然后,以此选择出具有最佳回报的信道以供接入,使得次用户能获得最佳带宽回报,从而达到提高信道利用率的目的.仿真结果表明,算法获得相对于传统认知无线电频谱接入方式更高的信道带宽,并接近无漏检和虚警现象的理想情况,有效地提高了信道利用率.

References

[1]  AKYILDIZ I, LEE W Y, VURAN M C. A survey on spectrum management in cognitive radio networks [J]. IEEE Communications Magazine, 2008(4):40-48.
[2]  CHEN Y X, ZHAO Q, SWAMI A. Joint design and separation principle for opportunistic spectrum access in the presence of sensing errors [J]. IEEE Transactions on Information theory, 2008(5):2053-2071.doi:10.1109/TIT.2008.920248.
[3]  PIAO G, DAVID K. Multi-standard radio resource management for integrated voice and data services [A]. Dublin:IEEE, 2007.990-995.
[4]  KAELBLING L P, LITTMAN M L, CASSANDRA A R. Planning and acting in partially observable stochastic domains [J]. A Rtificial Intelligence, 1998(1):99-134.doi:10.1016/S0004-3702(98)00023-X.
[5]  SMALLWOOD R D, SONDIK E J. The optimal control of partially observable Markov processes over a finite horizon [J]. Operations Research, 1973(5):1071-1088.doi:10.1287/opre.21.5.1071.
[6]  ZHAO Q, TONG L, SWAMI A. Decentralized cognitive MAC for opportunistic spectrum access in ad hoc networks:A POMDP framework [J]. IEEE Journal on Selected Areas in Communications, 2007(3):589-600.doi:10.1109/JSAC.2007.070409.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133