Enabling jamming-resistant communications in wireless MIMO networks
Huacheng Zeng, Cao Chen, Hongxiang Li, Qiben Yan · 2017
In this paper, we propose a practical anti-jamming solution for wireless MIMO networks to enable their legitimate communications in the presence of multiple high-power and broadband radio jamming attacks, and evaluate the proposed solution using real-world implementations in a WiFi network. We first develop a blind jamming mitigation (BJM) algorithm, which can cancel jamming signals from multiple unknown radio jammers and, at the same time, equalize channel to recover the signals from the legitimate sender. Unlike the existing jamming mitigation algorithms, the BJM algorithm does not need any channel information for jamming mitigation and signal recovery. Based on the BJM algorithm, we develop a jamming-resistant receiver (termed JrRx) and a holistic anti-jamming scheme to salvage legitimate communications in the face of jamming attacks. We have built a prototype of JrRx and evaluated its performance in a WiFi network. Experimental results show that, as long as JrRx has more antennas than the jammers, it can successfully decode the signals from the sender, even if the jamming signals are 20 dB stronger than the signals of interest.