| Title |
Air-to-Air Channel Modeling and Performance Evaluation of an OFDM System for UAV Communications |
| Authors |
엄준수(Joon-Soo Eom) ; 강길모(Gil-Mo Kang) ; 신요안(Yoan Shin) ; 신오순(Oh-Soon Shin) ; 박재수(Jaesoo Park) ; 최효기(Hyogi Choi) ; 황찬호(Chanho Hwang) |
| DOI |
https://doi.org/10.5573/ieie.2020.57.3.10 |
| Keywords |
A2A channel ; Doppler spread model ; OFDM ; path-loss model ; time delay model ; UAV ; |
| Abstract |
Applications of unmanned aerial vehicles (UAVs) are expanding to various areas, such as weather monitoring, sensing of natural disasters, traffic control, transportation of commodities, and network coverage extension, as UAVs are popularized and equipped with communication functionality. In order to extend the network coverage, in particular, UAVs can be used as relays between a ground base station and other UAVs far from the ground base station. In this scenario, we need air-to-air (A2A) communications between the relay UAV and other UAVs as well as air-to-ground (A2G) communications between the ground base station and the relay UAV. In this paper, we focus on A2A communications. We first develop an A2A channel model that incorporates the path loss, delay spread, and Doppler spread models, which are functions of the distance, relative velocity, and altitudes of UAVs. Then, we design an A2A communication system based on orthogonal frequency division multiplexing (OFDM) and access its performance under various A2A channels. |