5 papers
Fluid Antenna Systems under Channel Uncertainty and Hardware Impairments: Trends, Challenges, and Future Research Directions
Saeid Pakravan, Mohsen Ahmadzadeh, Ming Zeng +3
Fluid antenna systems (FAS) have recently emerged as a promising paradigm for achieving spatially reconfigurable, compact, and energy-efficient wireless communications in beyond fi…
Learning Function-to-Function Mappings: A Fourier Neural Operator for Next-Generation MIMO Systems
Jian Xiao, Ji Wang, Qi Sun +4
Next-generation multiple-input multiple-output (MIMO) systems, characterized by extremely large-scale arrays, holographic surfaces, three-dimensional architectures, and flexible an…
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…
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…
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…