3 papers
cs.IT2025
Two-Timescale Learning for Pilot-Free ISAC Systems
Jian Xiao, Ji Wang, Qimei Cui +4
A pilot-free integrated sensing and communication (ISAC) system is investigated, in which phase-modulated continuous wave (PMCW) and non-orthogonal multiple access (NOMA) waveforms…
eess.SP2025
When Vision-Language Model (VLM) Meets Beam Prediction: A Multimodal Contrastive Learning Framework
Ji Wang, Bin Tang, Jian Xiao +3
As the real propagation environment becomes in creasingly complex and dynamic, millimeter wave beam prediction faces huge challenges. However, the powerful cross modal representati…
cs.IT2025
Rotatable RIS Assisted Physical Layer Multicasting
Ji Wang, Jiayu Tian, Lijuan Qin +4
Reconfigurable Intelligent Surfaces (RIS) dynamically control signal propagation to enhance wireless communications. This paper presents a novel framework for rotatable RIS assiste…