Path Loss Measurement for Air-to-Ground Channels in Unlicensed Bands with Obstacles 


Vol. 47,  No. 12, pp. 2021-2032, Dec.  2022
10.7840/kics.2022.47.12.2021


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  Abstract

In this paper, we conduct field measurement using a drone to examine the path loss variation of air-to-ground (A2G) channels with obstacles in unlicensed bands. For A2G channel measurement, a commercial WiFi router is attached to the drone, and several ground receivers with wireless local area network (LAN) cards are placed in a line-of-sight position, behind an obstacle, inside a vehicle, and on a car trunk. The path loss is measured using WiFi beacon signals in 2.4 GHz and 5 GHz unlicensed bands. To examine the effect of the drone body on the signal transmission of the WiFi router, the radiation pattern is measured using the router attached to the drone. Also, we measure the path loss by changing the elevation angle and ground distance, and analyze the effect of obstacles on the path loss. Through the measurement campaign, the A2G channel parameters are derived considering the elevation angle, the ground distance, and the obstacles.

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[IEEE Style]

H. J. Lee, S. J. Han, J. Byeon, J. Choi, "Path Loss Measurement for Air-to-Ground Channels in Unlicensed Bands with Obstacles," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 12, pp. 2021-2032, 2022. DOI: 10.7840/kics.2022.47.12.2021.

[ACM Style]

Hun Je Lee, Su Jeong Han, Jung-Il Byeon, and Jihoon Choi. 2022. Path Loss Measurement for Air-to-Ground Channels in Unlicensed Bands with Obstacles. The Journal of Korean Institute of Communications and Information Sciences, 47, 12, (2022), 2021-2032. DOI: 10.7840/kics.2022.47.12.2021.

[KICS Style]

Hun Je Lee, Su Jeong Han, Jung-Il Byeon, Jihoon Choi, "Path Loss Measurement for Air-to-Ground Channels in Unlicensed Bands with Obstacles," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 12, pp. 2021-2032, 12. 2022. (https://doi.org/10.7840/kics.2022.47.12.2021)
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pISSN : 1226 - 4717
eISSN : 2287 - 3880