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arXiv · 2609.33369

Geometry-Aware Multi-UAV Full-Duplex Communication: System Design and Experiment

Tao Yu·Kiyomichi Araki·Tomohiro Mogi·Yasushi Hada·Kei Sakaguchi
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Abstract

The deployment of unmanned aerial vehicle (UAV) systems relies on high-performance yet lightweight wireless links between UAVs and ground stations (GSs). This paper presents a geometry-aware multi-UAV in-band full-duplex (MU-IBFD) communication system that uses high-gain directional antennas and separated uplink/downlink channels to convert self-interference into controllable co-channel interference (CCI) between UAVs, thereby avoiding energy-intensive self-interference cancelers on UAVs. We also derive a geometry-aware CCI model and define a reliable operating region (ROR) in the 3D airspace, within which the SINR requirement is satisfied. A prototype consisting of two UAVs and a GS is developed, and field trials are conducted. The measured CCI as a function of UAV positions agrees well with the theoretically predicted non-ROR region, and the downlink capacity significantly exceeds that of a conventional time-division duplex (TDD) with omni-directional scheme and higher transmit power and approaches that of ideal IBFD in most of the airspace. A proof-of-concept 4K/60p video transmission further demonstrates the practical potential of the proposed MU-IBFD system.

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Tao Yu, Kiyomichi Araki, Tomohiro Mogi, Yasushi Hada, Kei Sakaguchi. 2026-09-27. Geometry-Aware Multi-UAV Full-Duplex Communication: System Design and Experiment. https://doi.org/10.1109/tvt.2026.3737383

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