无线射频注入的物理层分析  

Analysis of Wireless RF Injection on Physical Layer

作　　者：张君毅[1] 杨义先[1] 

机构地区：[1]北京邮电大学网络与交换技术国家重点实验室信息安全中心,北京100876

出　　处：《无线电工程》2009年第2期48-50,53,共4页Radio Engineering

基　　金：国家自然科学基金与香港研究资助局联合科研基金(60731160626);国家863项目(2006AA01Z456)资助

摘　　要：通过物理层进行无线射频注入是实现更高层次网络对抗的基础。建立了一个无线射频注入的模型,在物理层实现注入必须满足足够的信道容量、匹配的信号形式和严格的时序关系。分析了实现物理层注入需要确定的几个参数:估计路径传播损耗、收发天线增益、噪声基底等指标以确定发射功率。对被攻击网络的信号进行精确参数估计,以控制产生相匹配的信号。要遵循合适的通信规程,以实现无线链路的建立和欺骗信息的传送。给出了实现无线注入的工作流程,将欺骗信息通过物理层向高层渗透。Wireless RF injection through physical layer is the basis for higher layer network countermeasure. A wireless RF injection model is constructed, and to achieve physical layer injection, there should be enough channel capacity, matched signal type and rigid time sequence relation. Some parameters which need to be determined are analyzed;path propagation loss, receive/transmit antenna gain and noise base are estimated to determine transmit power; the signal parameters of the attacked network are estimated to control the generation of matched signal;appropriate communication regulations must be followed to achieve wireless link establishment and deceive information transmission. The working flow for wireless injection is given, leading the deceive information to penetrate towards higher layers.

关 键 词：射频注入 物理层 信号匹配 

分 类 号：TN915.08[电子电信—通信与信息系统]