基于局部博弈的认知无线电频谱管理方法  

Spectrum management algorithm for cognitive radio system based on local game

作　　者：姚汝贤[1,2] 杨守义[2] 

机构地区：[1]黄淮学院信息工程学院,河南驻马店463000 [2]郑州大学信息工程学院,河南郑州450001

出　　处：《南京邮电大学学报（自然科学版）》2015年第6期24-30,共7页Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition

基　　金：国家自然科学基金(61271421);河南省重点科技攻关项目研究基金(142102210335)资助项目

摘　　要：对于无线电频谱管理中中继节点的接入与分配这一重要环节,提出了一种改进型的认知无线电频谱管理方法(Improved Distributed Threshold Relaying,IDTR)。该IDTR算法在DTR协议基础上改进传输数据时延,避开所有时延相等且为一个时隙的不符合现实情况的现象;在局部信息协调中引进博弈思想和门限策略,博弈出更优化的信道接入策略,提高传输速率及吞吐量。仿真结果表明,与业内常用的DTR协议算法相比,该算法在平均数据传输时延上最大差异可小0.04 d B,在不同的信噪比条件下数据传输时延也稳定,平均吞吐量在一定信噪比条件下最大差异可高DTR协议算法1.1 Mbit/s。该方案可以有效应用于认知无线电频谱管理,其性能优越,实用性强。Aimed at the access and the allocation of the relay node in radio spectrum management,this paper proposes an improved spectrum management algorithm for the cognitive radio system,called the IDTR. Firstly,the IDTR algorithm is used to improve data transfer delay based on the protocol of DTR,thus avoiding the phenomenon without meeting data transmission delay the reality,that is,all delays equal a slot; Then,game ideas and a threshold policy at the local information coordination are introduced,and a more optimal channel access policy is used to improve the transmission rate and the throughput. Simulation results show that IDTR algorithm in average maximum difference on data transmission delay is smaller than 0. 04 d B compared with traditional DTR protocol,under different SNR conditions,its average throughput in certain SNR biggest difference can be as high as DTR protocol algorithm 1. 1 Mbit / s. The algorithm has good and practical characteristics in radio spectrum managements.

关 键 词：中继节点 能量损耗 博弈思想 传输时延 信道吞吐量 

分 类 号：TN92[电子电信—通信与信息系统]