Uplink Cooperative NOMA for Cellular-Connected UAV
Weidong Mei, Rui Zhang

TL;DR
This paper introduces a cooperative NOMA scheme for cellular-connected UAVs that leverages backhaul links among base stations to significantly improve uplink throughput compared to traditional methods.
Contribution
It proposes a novel cooperative NOMA approach utilizing backhaul links among BSs, and develops optimization strategies for maximizing sum-rate in UAV and ground user communications.
Findings
Cooperative NOMA outperforms OMA and non-cooperative NOMA in throughput.
Optimal and suboptimal algorithms effectively enhance UAV uplink rates.
Backhaul-assisted cooperation mitigates interference and improves spectral efficiency.
Abstract
Aerial-ground interference mitigation is a challenging issue in the cellular-connected unmanned aerial vehicle (UAV) communications. Due to the strong line-of-sight (LoS) air-to-ground (A2G) channels, the UAV may impose/suffer more severe uplink/downlink interference to/from the cellular base stations (BSs) than the ground users. To tackle this challenge, we propose to apply the non-orthogonal multiple access (NOMA) technique to the uplink communication from a UAV to cellular BSs, under spectrum sharing with the existing ground users. However, for our considered system, traditional NOMA with local interference cancellation (IC), termed non-cooperative NOMA, may provide very limited gain compared to the OMA. This is because there are many co-channel BSs due to the LoS A2G channels and thus the UAV's rate performance is severely limited by the BS with the worst channel condition with the…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
