4 papers
Scene-Conditioned PINN-GNN for Multipath RF Maps: Cross-Scene Generation and In-Scene Completion
Lizhou Liu, Xiaohui Chen, Zihan Tang +2
Radio frequency (RF) maps provide a compact representation of multipath propagation characteristics and are fundamental to channel modeling, coverage analysis, and environment-awar…
OpenPathNet: An Open-Source RF Multipath Data Generator for AI-Driven Wireless Systems
Lizhou Liu, Xiaohui Chen, Wenyi Zhang
The convergence of artificial intelligence (AI) and sixth-generation (6G) wireless technologies is driving an urgent need for large-scale, high-fidelity, and reproducible radio fre…
PINN and GNN-based RF Map Construction for Wireless Communication Systems
Lizhou Liu, Xiaohui Chen, Zihan Tang +2
Radio frequency (RF) map is a promising technique for capturing the characteristics of multipath signal propagation, offering critical support for channel modeling, coverage analys…
Detecting Transportation Mode Using Dense Smartphone GPS Trajectories and Transformer Models
Yuandong Zhang, Othmane Echchabi, Tianshu Feng +3
Transportation mode detection is an important topic within GeoAI and transportation research. In this study, we introduce SpeedTransformer, a novel Transformer-based model that rel…