文章导读
总览 评价 彭军 1，* ， 姜明阳 2， ， 蒋富 1， ， 刘伟荣 1， （ 1、 中南大学信息科学与工程学院，长沙，410075； 2、 中南大学轨道交通安全运行控制与通信研究所,长沙 410075； ） 摘要： 认知无线电中的松台频谱接入技术，能够有效提高频谱资源匮乏问题
彭军1，*， 姜明阳2，， 蒋富1，， 刘伟荣1，
（
1、中南大学信息科学与工程学院，长沙，410075； 2、 中南大学轨道交通安全运行控制与通信研究所,长沙 410075； ）
摘要：
认知无线电中的松台频谱接入技术，能够有效提高频谱资源匮乏问题。协作通信的引入，将会显著改善通信系统性能。本文在协作认知网中提出一种新的协同激励策略，针对节点自私性特点，研究在主用户已知认知用户存在情况下，运用斯坦伯格主从博弈模型，主用户将部分频谱动态租赁给认知用户，从而激励认知用户主动的加入到主用户的协作传输中来，使得主用户通信性能得到提高，同时还获得额外的收益，加入协作的认知用户则获得一定的频谱带宽连续传输自己的数据。文中运用逆向归纳法分析并证明了此斯坦伯格主从博弈模型纳什均衡解的存在性以及唯一性，仿真结果表明，在本框架下，主用户和认知用户都能达到最优的网络效用。
关键词：
认知无线电；协作通信；协同激励策略；斯坦伯格主从博弈
PEN Jun1,*， JIANG Mingyang2,， JIANG Fu1,， LIU Weirong1,
（
1、Information science and engineering school,Central South University,Changsha,410075； 2、 Institute of Communication, Control and Safe Operation for Transportation System, Central South University, Changsha 410075； ）
Abstract：
Dynamic spectrum access technology can effectively improve the spectrum utilization and solve the problem of the lack of spectrum resources in cognitive radio network. The introduction of cooperative communication will significantly improve the performance of the communication system. This paper presents a new collaborative incentive strategies in Cooperative Cognitive Radio Network(CCRN). Specific to nodes' selfish nature, using stackelberg leader-follower game model, we reserch the spectrum allocation mechanism, where the primary user, aware the exist of second users, dynamically leasing part of the spectrum to the cognitive users, in order to stimulate them to actively join the primary user cooperative transmission. Thus the primary user communication performance is improved, and get some additional income in the same time. In return, the primary user leases portion of spectrum access width to the selected secondary users for their own transmission. The backward induction method is applied to analysis and prove the existence and uniqueness of the stackelberg equilibrium solution in the proposed stackelberg leader-follower game model. Both analytical result and numerical result show that the proposed cooperative cognitive radio framework is promising under which the utility of both primary and secondary system are maximized.
Tag：
点此返回栏目查看更多>>>参考论文
