摘要
认知无线电技术作为一种新型频谱共享技术而成为近年来研究的热点。如何确保频谱共享中资源分配的合理性和可靠性是认知无线电技术所面临的一个新的挑战。通过对认知用户不同情况下可能采取行为的分析和研究,提出一种结合VCG机制和主观逻辑理论的基于动态信誉机制的频谱分配策略。该策略能保证认知用户在理性的情况下提供真实的申请资源信息而对用户的非理性行为采取有效地控制。同时根据策略设计相应算法。仿真结果表明该算法能够有效地防止用户在申请资源时的欺骗行为以提高频谱利用率,并且能够减轻用户的非理性行为对系统造成的影响。
Cognitive radio technology has been the research hotspot recently emerged as a novel feasible solution to address the spectrum sharing problem. How to ensure the feasibility and reliability of spectrum resource allocation is the new challenge for cognitive radio technology. A dynamic reputation scheme based spectrum allocation strategy is proposed in this paper. The Vickrey-Clark-Groves mechanism and subject logic theory is used in the strategy to solve the two problems that are strategy-proof and irrational behavior of cognitive users. The strategy can prevent the strategy-proof of rational cognitive users when they apply the spectrum resource on the one hand and on the other hand to effectively control the user＇s irrational behavior. And a corresponding algorithm is designed according to the strategy. Finally,the simulation result shows the algorithm can improve the spectrum usage of the system and alleviate influence of the system caused by the user＇s irrational behavior.
出处
《信号处理》
CSCD
北大核心
2014年第11期1339-1344,共6页
Journal of Signal Processing
基金
福建省自然科学基金(2014J01223)
福建省教育厅A类项目(JA11046)
关键词
认知无线电
频谱资源分配
VCG机制
主观逻辑
信誉机制
cognitive radio
spectrum resource allocation
vickrey-clark-groves mechanism
subject logic
reputation mechanism
