Empirical Dynamic Modeling for Low-Altitude UAV Propagation Channels

Zeyu Huang, Jose Rodrıguez-Pineiro, Tomas Domınguez-Bolano, Xuesong Cai, Xuefeng Yin

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Abstract

During the last few years, with the decrease of their sizes and costs, Unmanned Aerial Vehicles (UAVs) became more feasible for their use in general-purpose applications. As an important basis for UAV applications, the Air-to-Ground (A2G) radio propagation channel has gained attention in the channel modeling literature. However, whereas the A2G propagation channel is inherently dynamic (time-varying), the majority of the available models do not consider such a time-variability. This paper proposes a channel multi-path component (MPC) tracking algorithm and shows its ability to analyze the data collected by a real A2G measurement campaign in a suburban environment. Based on the obtained results, a time-varying statistical channel model for A2G communications in realistic suburban scenarios is proposed. The model is able to stochastically characterize parameters related to the birth and time-of-life of the multi-path components (MPCs), as well as their evolution in terms of delay, Doppler frequency or magnitude. Correlation coefficients to relate different channel characteristics are also obtained. Our work shows that the MPCs evolution over time for the UAV A2G channel can be described by simple regular patterns.

Original languageEnglish
Article number9382924
JournalIEEE Transactions on Wireless Communications
Volume20
Issue number8
Pages (from-to)5171-5185
Number of pages15
ISSN1536-1276
DOIs
Publication statusPublished - 2021

Keywords

  • Air-to-ground
  • Buildings
  • Channel models
  • Delays
  • MPCs tracking
  • Position measurement
  • Trajectory
  • UAV-based measurement
  • Unmanned aerial vehicles
  • Wireless communication
  • time-variant channel

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