小型认知无线网络通信协议的制定与设计VIP免费

河北联合大学轻工学院QINGGONGCOLLEGE,HEBEIUNITEDUNIVERSITY毕业设计说明书111方程段1部分1论文题目：小型认知无线网络通信协议的制定与设计2013年05月30日摘要认知无线电网络具有动态、灵活、智能地使用频谱资源，提高频谱利用率的特点，其网络结构和协议体系的设计是实现上述网络功能的关键。现有基于认知无线电技术的网络架构主要有美国的CORVUS系统，基于IEEE802.22的无线局域网(WRAN)和支持多信道多接口的无线Mesh网络；协议体系有CORVUS协议体系，军用的XG系统协议及WRAN协议等。提出了一种小型认知无线网络的频谱协同感知方法，并在此基础上设计了一种小型认知无线网络的通信协议。通过协议程序复杂度的角度切入，对该协议进行了分析。同其他典型协议相比较，该协议通过采用集中式控制、分布式感知、点对点通信的机制，尽可能地做到了扬长避短，使系统的整体稳定性和复杂度得到了兼顾。关键词认知无线电；网络架构；网络协议；认知无线网络；协同感知；通信协议；程序复杂度AbstractCognitiveradionetworkshavetheabilitiesofutilizingspectrumdynamically，agilelyandintelligently，andimprovingtheefficiencyofspectrumusage.Consequently，boththeprotocolandarchitecturaldesignsforcognitiveradionetworksisverycrucial.ThenetworkarchitecturesinexistingsystemsincludedcontentsareCORVUSsystemintroducedinAmerica，WirelessRegionalAreaNetwork(WRAN)basedonIEEE802.22aswellasthewirelessMeshnetworksupportingmulti-channelandmulti-interface；relatednetworkprotocolsareofCORVUSsystem，theXGsystemformilitaryapplications，andWRAN.Acooperativespectrumsensingmethodofsmall-scalecognitivewirelessnetworkisproposed.Onthisbasis，acommunicationprotocolofsmall-scalecognitivewirelessnetworkisdesigned.Startingfromtheprogramcomplexity，thispaperanalyzesandevaluatesthecommunicationprotocol.Comparedwithothertypicalprotocols，theperformanceofthisprotocolisimprovedbyusingthemechanismofcentralizedcontrol，distributedsensingandpointtopointcommunication.Thestabilityandcomplexityofthesystemaretakenintoaccount.Keywords：cognitiveradio；networkarchitecture；networkprotocol；cognitivewirelessnetwork；collaborativeawareness；communicationprotocol；programcomplexity目录摘要.............................................................................................................................IAbstract..........................................................................................................................II第1章绪论..................................................................................................................11.1认知无线电的产生背景和特征...........................................................................11.1.1CR技术的产生.............................................................................................21.1.2CR特征..........................................................................................................21.1.3认知无线电与软件无线电之间的关系........................................................31.1.4CR当前的发展与标准..................................................................................31.2认知无线网络的研究背景...................................................................................4第2章认知无线网络的简介......................................................................................52.1认知无线网络的概念...........................................................................................52.2认知无线网络的特点.............................................................................