Adaptive Nullification of Multiple Correlated Jammers Using Deep Reinforcement Learning
- Publisher:
- Institute of Electrical and Electronics Engineers (IEEE)
- Publication Type:
- Journal Article
- Citation:
- IEEE Transactions on Vehicular Technology, 2025, PP, (99), pp. 1-14
- Issue Date:
- 2025-01-01
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Nullifying/suppressing the jamming signals can be problematic when the correlation between transmitted jamming signals is deliberately varied over time, making the nullspace estimation of the jamming channel much more challenging. This is because the time-varying correlation between transmitted jamming signals causes an impact on the nullspace estimation similar to that caused by a time-varying jamming channel. Most existing interference nullification solutions only consider unchanged correlations or heuristically adapt to the time-varying correlation by continuously monitoring the residual jamming signals before updating the estimated (nullifying) beam-forming matrix for the data transmission phase. In this paper, we systematically formulate the optimization problem of the nullspace estimation and data transmission phases. Then, to deal with the uncertainty and incomplete information caused by the jammers that deliberately vary their jamming strategy, we reformulate the problem using a partially observable semi-Markov decision process (POSMDP). We then design a deep dueling Q-learning-based framework to optimally tune the duration of the nullspace estimation and data transmission phases. Extensive simulations demonstrate that the proposed techniques effectively deal with time-varying correlated jamming signals.
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