Xiang, Luping;
Xu, Ke;
Hu, Jie;
Masouros, Christos;
Yang, Kun;
(2024)
Robust NOMA-Assisted OTFS-ISAC Network Design With 3D Motion Prediction Topology.
IEEE Internet of Things Journal
, 11
(9)
pp. 15909-15918.
10.1109/jiot.2024.3352391.
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Abstract
This paper proposes a novel non-orthogonal multiple access (NOMA)-assisted orthogonal time-frequency space (OTFS)-integrated sensing and communication (ISAC) network, which uses unmanned aerial vehicles (UAVs) as air base stations to support multiple users. By employing ISAC, the UAV extracts position and velocity information from the user’s echo signals, and non-orthogonal power allocation is conducted to achieve a superior achievable rate. A 3D motion prediction topology is used to guide the NOMA transmission for multiple users, and a robust power allocation solution is proposed under perfect and imperfect channel estimation for max-min fairness (MMF) and maximum sum-rate (SR) problems. Simulation results demonstrate the superiority of the proposed NOMA-assisted OTFS-ISAC system over other systems in terms of achievable rate under both perfect and imperfect channel conditions with the aid of 3D motion prediction topology.
Type: | Article |
---|---|
Title: | Robust NOMA-Assisted OTFS-ISAC Network Design With 3D Motion Prediction Topology |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1109/jiot.2024.3352391 |
Publisher version: | https://doi.org/10.1109/JIOT.2024.3352391 |
Language: | English |
Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
Keywords: | Orthogonal Time Frequency Space (OTFS), Integrated Sensing and Communication (ISAC), non-orthogonal multiple access (NOMA), delay-Doppler (DD), imperfect channel. |
URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10185997 |
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