摘要
针对认知无线电系统中主次用户频谱共享问题,提出了一种基于逢低买入的频谱分配机制。本机制在传统的拍卖中引入了次用户的合作关系,建立了相应的基于逢低买入的合作竞拍分配模型。该机制合理地处理了主用户和次用户及次用户和次用户之间的利益关系;利用蜂群算法实现频谱最优价格的快速求解。仿真结果表明,该机制能够在提高主用户频谱收益的同时使次用户能够以较低价格获得频谱的接入,从而提高系统的频谱使用效率以及次用户接入频谱的公平性,具有良好的应用前景。
Abstract： This paper proposed a novel cognitive radio spectrum sharing scheme, which based on the tradition auction model and group buying auction. Collusion competition model was developed and realized by introducing collusion relationship to competition of secondary users and adopting the group buying auction theory. The mechanism dealt with the relationship be- tween the primary user and the secondary users or the secondary users themselves in cognitive radio networks. It achieved the fast solution of spectrum＇ s optimal price by artificial bee colony optimization algorithm. Simulation results show that the mech- anism is able to improve the spectrum auction revenue of primary user while the secondary users can get the opportunities to ac- cess the idle spectrum. As a result, the mechanism enhances the efficiency of spectrum utilization in system as well as the fair- ness of secondary users access the spectrum, and it has a favorable application prospect.
出处
《计算机应用研究》
CSCD
北大核心
2014年第2期492-495,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61102062
61271260)
国家教育部科学技术研究重点资助项目(212145)
重庆市科委自然科学基金资助项目(cstc2011jjA1192)
重庆市教委科学技术研究资助项目(KJ110503)
关键词
认知无线电
频谱分配
拍卖
合作
逢低买入
cognitive radio
spectrum allocation
auction
collusion
group buying
