학술논문

Spatially Consistent Air-to-Ground Channel Modeling via Generative Neural Networks
Document Type
Periodical
Source
IEEE Wireless Communications Letters IEEE Wireless Commun. Lett. Wireless Communications Letters, IEEE. 13(4):1158-1162 Apr, 2024
Subject
Communication, Networking and Broadcast Technologies
Computing and Processing
Signal Processing and Analysis
Gaussian processes
Autonomous aerial vehicles
Trajectory
Generators
Data models
Buildings
Computer architecture
Cellular network
channel model
drone
5G
generative neural network
ray tracing
uncrewed aerial vehicle (UAV)
Language
ISSN
2162-2337
2162-2345
Abstract
This letter proposes a generative neural network architecture for spatially consistent air-to-ground channel modeling. The approach considers the trajectories of uncrewed aerial vehicles along typical urban paths, capturing spatial dependencies within received signal strength (RSS) sequences from multiple cellular base stations (gNBs). Through the incorporation of conditioning data, the model accurately discriminates between gNBs and drives the correlation matrix distance between real and generated sequences to minimal values. This enables evaluating performance and mobility management metrics with spatially (and by extension temporally) consistent RSS values, rather than independent snapshots. For some tasks underpinned by these metrics, say handovers, consistency is essential.