Work

Beamforming for beam-squint effect mitigation in LEO satellite communication systems

Year: 2025

Type: 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.

Source: ICT Express

DOI: 10.1016/j.icte.2025.09.005

Authors: Jung Hoon Lee, Pansoo Kim, Jae-Young Lee, Kyungrak Son

Institutions: Electronics and Telecommunications Research Institute, Hankuk University of Foreign Studies

Language: English

Topic: Satellite Communication Systems

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $1,500