Benchmarking the Physical Layer of Wireless Cards using Software-Defined Radios
Benchmarking the Physical Layer of Wireless Cards using Software-Defined Radios
复制标题
使用软件定义无线电对无线卡物理层进行基准测试
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
D. Starobinski
中科院分区：
文献类型：
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作者：
Liangxiao Xin;Johannes K. Becker;Stefan Gvozdenovic;D. Starobinski
无线设备的许多性能特征从根本上受到其特定于供应商的物理层实现的影响。然而，表征无线设备的物理层行为通常需要具有昂贵设备的复杂测试平台，使得这种行为对最终用户不可访问且不透明。在这项工作中，我们提出并实现了一个新的测试平台架构的软件定义的无线电为基础的无线设备性能基准测试。该测试床能够访问和测量真实的无线设备的物理层协议特征。测试床还允许以微秒时间粒度严格控制定时事件。使用该测试平台，我们测量了来自不同供应商的Wi-Fi设备的接收器灵敏度和信号捕获行为。我们确定其性能的显着差异，包括多达20 dB的变化，在他们的接收器灵敏度。我们进一步评估截断数据包的设备的响应，并表明，这个过程可以用来指纹的设备。
Many performance characteristics of wireless devices are fundamentally influenced by their vendor-specific physical layer implementation. Yet, characterizing the physical layer behavior of wireless devices usually requires complex testbeds with expensive equipment, making such behavior inaccessible and opaque to the end user. In this work, we propose and implement a new testbed architecture for software-defined radio-based wireless device performance benchmarking. The testbed is capable of accessing and measuring physical layer protocol features of real wireless devices. The testbed further allows tight control of timing events, at a microsecond time granularity. Using the testbed, we measure the receiver sensitivity and signal capture behavior of Wi-Fi devices from different vendors. We identify marked differences in their performance, including a variation of as much as 20 dB in their receiver sensitivity. We further assess the response of the devices to truncated packets and show that this procedure can be employed to fingerprint the devices.