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MU-MIMO beamforming offers great potential for the AP with multiple antennas to serve multiple receivers concurrently. A key factor to implement the MU-MIMO system is the CSI feedback mechanism. However, it might be exploited by malicious attackers to threaten the transmission security of benign clients. To better explore the attacks through false CSI feedback in MU-MIMO systems, this paper proposes...
The covert communication in the physical layer and WiFi network is an important tendency for the current research on covert channel. On the other hand, the MIMO beamforming technique used in the physical layer of WiFi networks provides great potential for developing covert transmission scheme. To fill this gap, this paper presents a novel covert channel based on the coordinated operations in the control...
In this paper, we propose a new security design, called as Zero Reconciliation Secret Key Extraction, for backscatter wireless systems, in which a reader needs to establish secret keys for multiple tags. Our design is able to eliminate the reconciliation process in conventional physical layer based key establishment, therefore improving the efficiency while still maintaining security in such a process...
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