Reliable Transmission, Channel Modelling and AI-Enhanced Technologies for High-Mobility Wireless Communication Systems

Dear Colleagues,

The rapid evolution of the Sixth Generation (6G) of wireless networks is driving the development of an Integrated Air–Space–Ground (IASG) architecture. Central to this vision is the provision of seamless, high-capacity, and ultra-reliable connectivity in high-mobility scenarios, with High-Speed Railways (HSRs) and the Low-Altitude Economy (based on Unmanned Aerial Vehicle (UAV) networks) serving as the primary engines of innovation. However, these scenarios present formidable challenges: high-speed movement triggers severe Doppler spreads and rapid channel fluctuations, while complex environments demand unprecedented levels of sensing and transmission robustness.

This Special Issue will bridge the gap between theoretical breakthroughs and practical implementations for next-generation high-mobility networks. We focus on advanced 6G waveform designs, such as Orthogonal Time Frequency Space (OTFS), and adaptive channel modeling tailored for HSR and UAV trajectories. To enhance system resilience, we explore the integration of Reconfigurable Intelligent Surfaces (RIS), Massive Multiple-Input Multiple-Output (MIMO), and semantic communications, alongside robust anti-jamming and physical layer security strategies. Furthermore, the paradigm of Integrated Sensing and Communications (ISAC) is investigated not only for environmental awareness and moving target radar imaging but also for supporting high-dynamic satellite-based navigation. Innovative technologies, including quantum time synchronization and ultra-stable clocking, are also highlighted to ensure precision in extreme aerospace high-mobility scenarios.

By bringing together experts from terrestrial mobility, low-altitude aviation, and aerospace navigation, this Special Issue will provide a comprehensive roadmap for reliable high-mobility networking. Both original research articles and reviews are welcome.

Topics of interest include, but are not limited to, the following within high-mobility scenarios:

• Next-Generation Waveform Design (e.g., OTFS) and advanced signal processing;
• Measurement-based and Adaptive Channel Modeling for rapidly time-varying environments;
• Robust Integrated Sensing and Communications (ISAC) and environmental awareness;
• Moving Target Radar Detection and Imaging in highly dynamic contexts;
• RIS-empowered and Massive MIMO Systems for reliability enhancement;
• Anti-jamming, Physical Layer Security, and Semantic Communications;
• High-Dynamic Satellite Navigation and aerospace communication systems;
• Quantum Time Synchronization and Ultra-stable Clocking for high-precision sensing and positioning;
• Artificial Intelligence (AI)-driven Resource Allocation and intelligent handover strategies.

We look forward to receiving your contributions.

Dr. Yiyan Ma
Dr. Chuan Huang
Dr. Yifu Sun
Dr. Sixin Wang
Dr. Weiyang Feng
Guest Editors

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