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IEICE TRANSACTIONS on Communications

Model of the LOS Probability for the UAV Channel and Its Application for Environment Awareness

Chi-Min LI, Yu-Hsuan LEE, Yi-Ting LIAO, Pao-Jen WANG

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Summary :

Currently, unmanned aerial vehicles (UAV) have been widely used in many applications, such as in transportation logistics, public safety, or even in non-terrestrial networks (NTN). In all these scenarios, it is an important issue to model channel behavior between the UAV and the user equipment (UE) on the ground. Among these channel features, a critical parameter that dominates channel behavior is the probability of the line-of-sight (LOS), since the statistical property of the channel fading can be either Ricean or Rayleigh, depending on the existence of LOS. Besides, with knowledge of LOS probability, operators can design approaches or schemes to maximum system performance, such as the serving coverage, received signal to noise ratio (SNR), or the bit error rate (BER) with the limited transmitted power. However, the LOS UAV channel is likely difficult to acquire or derive, as it depends on the deployment scenario, such as an urban or rural area. In this paper, we generated four different scenarios defined by the ITU via the ray tracing simulator. Then, we used the spatial geometric relation and the curve fitting approach to derive the analytic models to predict the probability of the UAV LOS channels for different scenarios. Results show that our proposed relationships yield better prediction results than the methods in the literature. Besides, an example of establishing UAV self-awareness ability for the deployed environment via using proposed models is also provided in this paper.

Publication
IEICE TRANSACTIONS on Communications Vol.E105-B No.8 pp.975-980
Publication Date
2022/08/01
Publicized
2022/02/01
Online ISSN
1745-1345
DOI
10.1587/transcom.2021EBP3159
Type of Manuscript
PAPER
Category
Terrestrial Wireless Communication/Broadcasting Technologies

Authors

Chi-Min LI
  National Taiwan Ocean University
Yu-Hsuan LEE
  National Taiwan Ocean University
Yi-Ting LIAO
  National Taiwan Ocean University
Pao-Jen WANG
  Ming Chi University of Technology

Keyword