解放军理工大学学报(自然科学版)
解放軍理工大學學報(自然科學版)
해방군리공대학학보(자연과학판)
JOURNAL OF PLA UNIVERSITY OF SCIENCE AND TECHNOLOGY(NATURAL SCIENCE EDITION)
2014年
1期
1-6
,共6页
钟卫%徐友云%陈晶晶%黄龙%张旺
鐘衛%徐友雲%陳晶晶%黃龍%張旺
종위%서우운%진정정%황룡%장왕
认知MIMO%动态频谱接入%拍卖机制%学习自动机
認知MIMO%動態頻譜接入%拍賣機製%學習自動機
인지MIMO%동태빈보접입%박매궤제%학습자동궤
cognitive MIMO radio%dynamic spectrum access%auction mechanism%learning automata
研究了认知MIMO无线网络中基于博弈论的动态频谱接入技术,以使得具有不同风险偏好的次级用户(买家)可以动态地选择竞标策略,同时主用户也可以根据系统情况,自适应地调整拍卖机制。基于非合作博弈设计了一个有限离散博弈模型,该博弈至少有一个混合策略的纳什均衡。基于自动学习机的概念,设计了一个有限反馈的分布式随机学习算法。仿真结果表明,所设计的算法具有良好的性能,与传统的固定竞拍机制和随机的选择竞价策略相比,该算法能够帮助主用户获得更高的利润,且让次级用户根据自身的风险偏好,选择一个合理的竞拍策略。
研究瞭認知MIMO無線網絡中基于博弈論的動態頻譜接入技術,以使得具有不同風險偏好的次級用戶(買傢)可以動態地選擇競標策略,同時主用戶也可以根據繫統情況,自適應地調整拍賣機製。基于非閤作博弈設計瞭一箇有限離散博弈模型,該博弈至少有一箇混閤策略的納什均衡。基于自動學習機的概唸,設計瞭一箇有限反饋的分佈式隨機學習算法。倣真結果錶明,所設計的算法具有良好的性能,與傳統的固定競拍機製和隨機的選擇競價策略相比,該算法能夠幫助主用戶穫得更高的利潤,且讓次級用戶根據自身的風險偏好,選擇一箇閤理的競拍策略。
연구료인지MIMO무선망락중기우박혁론적동태빈보접입기술,이사득구유불동풍험편호적차급용호(매가)가이동태지선택경표책략,동시주용호야가이근거계통정황,자괄응지조정박매궤제。기우비합작박혁설계료일개유한리산박혁모형,해박혁지소유일개혼합책략적납십균형。기우자동학습궤적개념,설계료일개유한반궤적분포식수궤학습산법。방진결과표명,소설계적산법구유량호적성능,여전통적고정경박궤제화수궤적선택경개책략상비,해산법능구방조주용호획득경고적리윤,차양차급용호근거자신적풍험편호,선택일개합리적경박책략。
A game theoretic framework of the auction based dynamic spectrum access for multi-type buyers ( i. e. , the secondary users that have different risk preferences) in cognitive MIMO networks was presented in this paper where the auction mechanisms of the primary user are parameterized and can be adaptively designed. The proposed game is a discrete game which must have at least one mixed or pure strategy Nash equilibrium. Based on the con-cept of learning automata, a distributed algorithm was proposed to learn the Nash equilibrium of the proposed game with limited feedback. Simulation results show that our proposed algorithm is efficient and can achieve much higher performance than the traditional fixed auction mechanism schemes and the random algorithm.