Multiple Antennas Secure Transmission under Pilot Spoofing and Jamming Attack
Hui-Ming Wang, Ke-Wen Huang, and Theodoros A. Tsiftsis

TL;DR
This paper introduces a random channel training scheme for secure downlink transmission in TDD systems with multiple antennas, effectively mitigating pilot spoofing and jamming attacks to improve secrecy rates.
Contribution
It proposes a novel RCT framework with multiple orthogonal pilot sequences, enabling the BS to identify the legitimate user's pilot and estimate channels under attack.
Findings
Secrecy performance significantly improved over conventional schemes.
Analytical expressions for the probability of incorrect pilot detection.
Closed-form secure beamforming vectors optimized for enhanced secrecy.
Abstract
Transmitter-side channel state information (CSI) of the legitimate destination plays a critical role in physical layer secure transmissions. However, channel training procedure is vulnerable to the pilot spoofing attack (PSA) or pilot jamming attack (PJA) by an active eavesdropper (Eve), which inevitably results in severe private information leakage. In this paper, we propose a random channel training (RCT) based secure downlink transmission framework for a time division duplex (TDD) multiple antennas base station (BS). In the proposed RCT scheme, multiple orthogonal pilot sequences (PSs) are simultaneously allocated to the legitimate user (LU), and the LU randomly selects one PS from the assigned PS set to transmit. Under either the PSA or PJA, we provide the detailed steps for the BS to identify the PS transmitted by the LU, and to simultaneously estimate channels of the LU and Eve.…
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Taxonomy
TopicsWireless Communication Security Techniques · Wireless Signal Modulation Classification · Antenna Design and Analysis
