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Multiple UAVs as relays : multi-hop single link versus multiple dual-hop links
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Chen, Yunfei, Zhao, Nan, Ding, Zhiguo and Alouini, Mohamed-Slim (2018) Multiple UAVs as relays : multi-hop single link versus multiple dual-hop links. IEEE Transactions on Wireless Communications, 17 (9). pp. 6348-6359. doi:10.1109/TWC.2018.2859394
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WRAP-multiple-UAVs-relays-multi-hop-single-link-versus-multiple-dual-hop links-Chen-2018.pdf - Accepted Version - Requires a PDF viewer. Download (1066Kb) | Preview |
Official URL: https://doi.org/10.1109/TWC.2018.2859394
Abstract
Unmanned aerial vehicles (UAVs) have found many important applications in communications. They can serve as either aerial base stations or mobile relays to improve the quality of services. In this paper, we study the use of multiple UAVs in relaying. Considering two typical uses of multiple UAVs as relays that form either a single multi-hop link or multiple dual-hop links, we first optimize the placement the UAVs by maximizing the end-to-end signal-to-noise ratio for three useful channel models and two common relaying protocols. Based on the optimum placement, the two relaying setups are then compared in terms of outage and bit error rate. Numerical results show that the dual-hop multi-link option better than the multi-hop single link option when the air-to-ground path loss parameters depend on the UAV positions. Otherwise, the dual-hop option is only better when the source-to-destination distance small. Also, decode-and-forward UAVs provide better performances than amplify-and-forward UAVs. The investigation also reveals the effects of important system parameters on the optimum UAV positions and the relaying performances to provide useful design guidelines.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||
| Divisions: | Faculty of Science > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Drone aircraft, Aeronautics -- Communication systems, Radio relay systems, Mobile communication systems | ||||||||
| Journal or Publication Title: | IEEE Transactions on Wireless Communications | ||||||||
| Publisher: | IEEE | ||||||||
| ISSN: | 1536-1276 | ||||||||
| Official Date: | September 2018 | ||||||||
| Dates: |
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| Volume: | 17 | ||||||||
| Number: | 9 | ||||||||
| Page Range: | pp. 6348-6359 | ||||||||
| DOI: | 10.1109/TWC.2018.2859394 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Publisher Statement: | © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
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