文章基本信息

标题：Optimal Spectrum Access for Users in Multi-Channel Cognitive Radio Networks
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作者：Vivek Agrawal ; Utkarsh Tiwari ; Vishal Agarwal 等
期刊名称：International Journal of Wireless and Microwave Technologies(IJWMT)
印刷版ISSN：2076-1449
电子版ISSN：2076-9539
出版年度：2013
卷号：3
期号：1
页码：11-25
DOI：10.5815/ijwmt.2013.01.02
出版社：MECS Publisher
摘要：Cognitive Radio, a software defined radio, is an emerging technology which uses opportunistic spectrum access (OSA) for the efficient utilization of the spectrum. Its main aim is to utilize the unused portions of the spectrum by allowing unlicensed users (secondary users) to transmit data in absence of primary users. In this paper the assignment of multiple primary and secondary users in a multiple channel system is addressed with the sole aim of optimizing the total throughput. We have considered an optimal spectrum access (OSA) algorithm for the allotment of both the primary and secondary users in a multiple channel system and compared the results with the well-known meta-heuristic techniques such as Simulated Annealing (SA) and Tabu Search (TS). The results reveal that OSA algorithm is more efficient as compared to SA and TS as far as throughput optimization is considered.
关键词：Opportunistic Spectrum Access;Cognitive radio;Throughput;Simulated Annealing and Tabu Search