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arXiv · 2509.07839

Enhancements in Score-based Channel Estimation for Real-Time Wireless Systems

Florian Strasser·Marion Bäro·Wolfgang Utschick
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Abstract

We propose enhancements to score-based generative modeling techniques for low-latency pilot-based channel estimation in a point-to-point single-carrier multiple-input multiple-output (MIMO) wireless system. Building on recent advances in score-based models, we investigate a specific noise schedule design and sampling acceleration by step-skipping to reduce the number of denoising steps during inference. We additionally propose a single-step signal-to-noise ratio informed denoiser as an extreme case of the step-skipping approach. Our methods achieve significant latency reductions without performance degradation, as demonstrated on a synthetic channel dataset representing an urban macrocell MIMO communications scenario.

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Florian Strasser, Marion Bäro, Wolfgang Utschick. 2025-09-09. Enhancements in Score-based Channel Estimation for Real-Time Wireless Systems. https://arxiv.org/abs/2509.07839

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