1,039 research outputs found
Defeating Proactive Jammers Using Deep Reinforcement Learning for Resource-Constrained IoT Networks
Traditional anti-jamming techniques like spread spectrum, adaptive power/rate
control, and cognitive radio, have demonstrated effectiveness in mitigating
jamming attacks. However, their robustness against the growing complexity of
internet-of-thing (IoT) networks and diverse jamming attacks is still limited.
To address these challenges, machine learning (ML)-based techniques have
emerged as promising solutions. By offering adaptive and intelligent
anti-jamming capabilities, ML-based approaches can effectively adapt to dynamic
attack scenarios and overcome the limitations of traditional methods. In this
paper, we propose a deep reinforcement learning (DRL)-based approach that
utilizes state input from realistic wireless network interface cards. We train
five different variants of deep Q-network (DQN) agents to mitigate the effects
of jamming with the aim of identifying the most sample-efficient, lightweight,
robust, and least complex agent that is tailored for power-constrained devices.
The simulation results demonstrate the effectiveness of the proposed DRL-based
anti-jamming approach against proactive jammers, regardless of their jamming
strategy which eliminates the need for a pattern recognition or jamming
strategy detection step. Our findings present a promising solution for securing
IoT networks against jamming attacks and highlights substantial opportunities
for continued investigation and advancement within this field
Intelligent Reflecting Surface Assisted Anti-Jamming Communications Based on Reinforcement Learning
Malicious jamming launched by smart jammer, which attacks legitimate
transmissions has been regarded as one of the critical security challenges in
wireless communications. Thus, this paper exploits intelligent reflecting
surface (IRS) to enhance anti-jamming communication performance and mitigate
jamming interference by adjusting the surface reflecting elements at the IRS.
Aiming to enhance the communication performance against smart jammer, an
optimization problem for jointly optimizing power allocation at the base
station (BS) and reflecting beamforming at the IRS is formulated. As the
jamming model and jamming behavior are dynamic and unknown, a win or learn fast
policy hill-climbing (WoLF-PHC) learning approach is proposed to jointly
optimize the anti-jamming power allocation and reflecting beamforming strategy
without the knowledge of the jamming model. Simulation results demonstrate that
the proposed anti-jamming based-learning approach can efficiently improve both
the IRS-assisted system rate and transmission protection level compared with
existing solutions.Comment: This paper appears in the Proceedings of IEEE Global Communications
Conference (GLOBECOM) 2020. A full version appears in IEEE Transactions on
Wireless Communications. arXiv:2004.1253
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