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Experimental Evaluation of Time Bounded Anti-Spoofing (TBAS) in MIMO Systems

We look into the challenges faced by TBAS on MIMO systems through extensive experimentation. We conduct experiments with off-the-shelf wireless cards and run real world tests to evaluate the robustness of TBAS on MIMO in typical Wi-Fi environments with different levels of channel mobility. Our results show that TBAS can be very accurate when running on 3 by 2 systems or above at packet separation of 3ms, even when the wireless node is moving at a fast speed. Based on the trend, it is expected that the performance can improve even further for higher MIMO configurations. We believe this paper can be used as a guideline for future systems that will incorporate TBAS.