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Map as a Prompt: Learning Multi-Modal Spatial-Signal Foundation Models for Cross-scenario Wireless Localization

Research Multimodal & Generative

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TL;DR - SigMap is a multimodal foundation model for wireless localization that combines learned signal representations with 3D geographic maps. It improves adaptation and zero-shot generalization across environments, potentially reducing reliance on scenario-specific labeled data.

  • Uses cycle-adaptive masking based on wireless-channel periodicity to learn robust signal representations.
  • Introduces “map-as-prompt,” encoding 3D geographic information as lightweight soft prompts for cross-scenario adaptation.
  • Targets localization challenges in environment-sensitive 5G/6G applications.
  • Reportedly achieves state-of-the-art results across multiple tasks and outperforms supervised and self-supervised baselines in unseen environments.

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Map as a Prompt: Learning Multi-Modal Spatial-Signal Foundation Models for Cross-scenario Wireless Localization

arXiv eess.SP Yong Chu, Xun Zhou, Zenglin Xu, Hui Wang, Yue Yu 2026-07-17 arXiv:2607.15713
Public signals Semantic Scholar citations 0 · Semantic Scholar influential citations 0
Providers: Hugging Face · N/A OpenAlex · N/A Publisher · N/A Semantic Scholar · Citations 0 · Influential citations 0 X · N/A Fetched 2026-08-11 03:03:37.125267 UTC

TL;DR - SigMap is a multimodal foundation model for wireless localization that combines learned signal representations with 3D geographic maps. It improves adaptation and zero-shot generalization across environments, potentially reducing reliance on scenario-specific labeled data.

  • Uses cycle-adaptive masking based on wireless-channel periodicity to learn robust signal representations.
  • Introduces “map-as-prompt,” encoding 3D geographic information as lightweight soft prompts for cross-scenario adaptation.
  • Targets localization challenges in environment-sensitive 5G/6G applications.
  • Reportedly achieves state-of-the-art results across multiple tasks and outperforms supervised and self-supervised baselines in unseen environments.
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