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Optimizing Transmit Power and Antenna Tilt Angle for Non-Terrestrial Networks
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- Authors
- Junhyeong Jo, Mingun Kim, Jemin Lee, Miyoung Yun, Junhwan Lee
- Issue Date
- 2025-12
- Citation
- IEEE Wireless Communications Letters, v.15, pp.1275-1279
- ISSN
- 2162-2337
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- In non-terrestrial networks (NTNs), the uptilted antenna for base stations (BSs) has been considered to serve most aerial users (AUs) with a main-lobe. However, an inappropriate antenna tilt angle can lead to severe interference from the BSs. In this letter, we jointly optimize the transmit power for each AU and antenna tilt angle for each sector to maximize the sum data rate. Specifically, we propose the parallel algorithm to determine the optimal power allocation and antenna tilt angle. Finally, we show the effect of antenna tilt angle and the superiority of the proposed scheme over the baselines.
- Keyword
- aerial user, antenna tilt angle, interference mitigation, Non-terrestrial networks, power allocation
- KSP Keywords
- Antenna tilt angle, Interference mitigation, Parallel Algorithm, Transmit Power, base station, optimal power allocation, power allocation(PA), sum data rate