Multi-Antenna Jammer-Assisted Secure Short Packet Communications in IoT Networks

Dechuan Chen, Jin Li, Jianwei Hu (), Xingang Zhang and Shuai Zhang
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Dechuan Chen: College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China
Jin Li: College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China
Jianwei Hu: National Key Laboratory for Complex Systems Simulation, Beijing 100101, China
Xingang Zhang: College of Computer Science and Technology, Nanyang Normal University, Nanyang 473061, China
Shuai Zhang: College of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, China

Future Internet, 2023, vol. 15, issue 10, 1-19

Abstract: In this work, we exploit a multi-antenna cooperative jammer to enable secure short packet communications in Internet of Things (IoT) networks. Specifically, we propose three jamming schemes to combat eavesdropping, i.e., the zero forcing beamforming (ZFB) scheme, null-space artificial noise (NAN) scheme, and transmit antenna selection (TAS) scheme. Assuming Rayleigh fading, we derive new closed-form approximations for the secrecy throughput with finite blocklength coding. To gain further insights, we also analyze the asymptotic performance of the secrecy throughput in the case of infinite blocklength. Furthermore, we investigate the optimization problem in terms of maximizing the secrecy throughput with the latency and reliability constraints to determine the optimal blocklength. Simulation results validate the accuracy of the approximations and evaluate the impact of key parameters such as the jamming power and the number of antennas at the jammer on the secrecy throughput.

Keywords: short-packet communications; physical layer security; multi-antenna jammer; secrecy throughput (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2023
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