Reconfigurable Antenna Assisted Intrusion Detection in Wireless Networks
Reconfigurable Antenna Assisted Intrusion Detection in Wireless Networks
复制标题
可重构天线辅助无线网络入侵检测
DOI：
10.1155/2013/564503
复制
发表时间：
2013
影响因子：
2.3
通讯作者：
Dandekar, Kapil R.
中科院分区：
文献类型：
--
作者：
Mookiah, Prathaban;Walsh, John M.;Greenstadt, Rachel;Dandekar, Kapil R.
由于无线介质的广播性质，入侵检测是无线网络中的一个具有挑战性的问题。物理层信息越来越多地用于保护这些脆弱的网络。与此同时，可重构天线由于能够提高数据吞吐量而逐渐进入无线设备。在本文中，可重构天线的功能被用来设计一种在物理层运行的入侵检测方案。检测问题被提出为 GLRT 问题，该问题在与可重构天线的不同模式相对应的信道上运行。该方案的性能通过在室内环境中 802.11 频段进行的现场测量来量化。基于测量数据，我们研究了入侵检测方案可实现的性能以及不同控制参数对性能的影响。还分析了不同模式之间的方向图相关性对方案性能的影响，并在此基础上提供了如何设计不同天线模式的通用指南。结果表明，所提出的方案可以增加额外的安全层，可以显着减轻当前固定无线网络中的许多漏洞和威胁。
Intrusion detection is a challenging problem in wireless networks due to the broadcast nature of the wireless medium. Physical layer information is increasingly used to protect these vulnerable networks. Meanwhile, reconfigurable antennas are gradually finding their way into wireless devices due to their ability to improve data throughput. In this paper, the capabilities of reconfigurable antennas are used to devise an intrusion detection scheme that operates at the physical layer. The detection problem is posed as a GLRT problem that operates on the channels corresponding to the different modes of a reconfigurable antenna. The performance of the scheme is quantified through field measurements taken in an indoor environment at the 802.11 frequency band. Based on the measured data, we study the achievable performance and the effect of the different control parameters on the performance of the intrusion detection scheme. The effect of pattern correlation between the different modes on the scheme's performance is also analyzed, based on which general guidelines on how to design the different antenna modes are provided. The results show that the proposed scheme can add an additional layer of security that can significantly alleviate many vulnerabilities and threats in current fixed wireless networks.