Anti-detection-Jamming Attack Strategy Based on Short-Packet Covert Communications
The anti-detection-jamming attack strategy based on short-packet covert communications is proposed to deal with the potential detection-jamming attack by hiding the existence of wireless transmis-sion behavior.Considering that the Shewhart change-point detection is adopted to judge the transmission behavior of the source node in real time,the jammer launches the artificial noise when the source node is judged to be transmitting packets.In order to hide the wireless transmission behavior,the source node randomly selects a starting time to transmit data packets with a low-power,low-rate and finite block-length.Intuitively,the lower packet transmit power and the shorter block-length,the stronger conceal-ment and the better anti-detection-jamming attack.However,the lower transmit power and the shorter block-length make the decoding error probability of packets at the receiver higher.Therefore,the transmit power and block-length of packets are optimized to maximize the effective transmission rate.As such,the optimal transmit power and block-length make the system achieve the optimal compromise between the transmis-sion covertness and reliability.Numerical simulation results verify the theoretical analysis,demonstrating the ef-fectiveness of the proposed scheme and the necessity to optimize the packet block-length and transmit power.
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万方数据
维普
