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Journal Article
Beamforming for beam-squint effect mitigation in LEO satellite communication systems
- Authors
- Jung Hoon Lee, Pansoo Kim, Jae-Young Lee, Kyungrak Son
- Issue Date
- 2025-12
- Citation
- ICT Express, v.11, no.6, pp.1103-1109
- ISSN
- 2405-9595
- Publisher
- 한국통신학회
- Language
- English
- Type
- Journal Article
- Abstract
- This paper proposes an efficient beamforming technique to mitigate the beam squint effect in wideband low Earth orbit (LEO) satellite communication systems. Based on the dynamic-subarray with fixed-true-time-delays (DS-FTTD) architecture, the proposed method optimizes the beamforming structure for multi-user transmission using statistical channel state information (CSI). Unlike the original DS-FTTD design, which assumes point-to-point communication and relies on instantaneous CSI, the proposed scheme is tailored for the practical constraints of LEO systems. Simulation results demonstrate that the proposed approach significantly improves beamforming gain and system throughput compared to conventional methods.
- KSP Keywords
- Beamforming technique, Channel State Information(CSI), Conventional methods, Low earth orbit (LEO) satellite, Practical constraints, Time Delay, beam squint, beamforming gain, beamforming structure, multi-user transmission, point-to-point communication
This work is distributed under the term of Creative Commons License (CCL)
(CC BY NC ND)
(CC BY NC ND)
