A Game-Theoretic Approach for High-Resolution Automotive FMCW Radar Interference Avoidance
Abstract
Nonlinear frequency hopping has emerged as a promising approach for mitigating interference and enhancing range resolution in automotive FMCW radar systems. Achieving an optimal balance between high range-resolution and effective interference mitigation remains challenging, especially without centralized frequency scheduling. This paper presents a game-theoretic framework for interference avoidance, in which each radar operates as an independent player, optimizing its performance through decentralized decision-making. We examine two equilibrium concepts--Nash Equilibrium (NE) and Coarse Correlated Equilibrium (CCE)--as strategies for frequency band allocation, with CCE demonstrating particular effectiveness through regret minimization algorithms. We propose two interference avoidance algorithms: Nash Hopping, a model-based approach, and No-Regret Hopping, a model-free adaptive method. Simulation results indicate that both methods effectively reduce interference and enhance the signal-to-interference-plus-noise ratio (SINR). Notably, No-regret Hopping further optimizes frequency spectrum utilization, achieving improved range resolution compared to Nash Hopping.
Keywords
Cite
@article{arxiv.2503.02327,
title = {A Game-Theoretic Approach for High-Resolution Automotive FMCW Radar Interference Avoidance},
author = {Yunian Pan and Jun Li and Lifan Xu and Shunqiao Sun and Quanyan Zhu},
journal= {arXiv preprint arXiv:2503.02327},
year = {2025}
}