A Survey of Channel Modeling for UAV Communications
Aziz Altaf Khuwaja, Yunfei Chen, Nan Zhao, Mohamed-Slim Alouini and, Paul Dobbins

TL;DR
This survey reviews existing UAV channel modeling efforts, highlighting measurement campaigns, characterization techniques, and future challenges to improve UAV communication system design.
Contribution
It provides a comprehensive overview of UAV channel modeling, including recent measurement campaigns and identifies key research gaps and future directions.
Findings
Extensive measurement campaigns for UAV channels are summarized.
Current modeling approaches are reviewed and compared.
Future research challenges in UAV channel modeling are outlined.
Abstract
Unmanned aerial vehicles (UAVs) have gained great interest for rapid deployment in both civil and military applications. UAV communication has its own distinctive channel characteristics compared with widely used cellular and satellite systems. Thus, accurate channel characterization is crucial for the performance optimization and design of efficient UAV communication systems. However, several challenges exist in UAV channel modeling. For example, propagation characteristics of UAV channels are still less explored for spatial and temporal variations in non\textendash stationary channels. Also, airframe shadowing has not yet been investigated for small size rotary UAVs. This paper provides an extensive survey on the measurement campaigns launched for UAV channel modeling using low altitude platforms and discusses various channel characterization efforts. We also review the contemporary…
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