@inproceedings{9f962af5ede240a79bfa77f29a411ac0,
title = "Sparse Precoder Design for Massive MIMO LEO Satellite Communications",
abstract = "In this paper, we investigate precoder design for massive multiple-input multiple-output (MIMO) low-earth-orbit (LEO) satellite communication (SATCOM). We first establish a beam based channel model that characterizes the spatial single path property of the LEO SATCOM channel, and reveal its sparsity in the beam domain. Based on this channel model, we prove that the design of the space domain precoder can be simplified into that of a lower-dimensional beam domain precoder. More importantly, we introduce a sparsity constraint on the beam domain precoder and propose a novel sparse precoder, achieving a flexible trade-off between transmission performance and computational complexity. Simulation results demonstrate the satisfactory performance of the proposed sparse precoder with low complexity.",
keywords = "LEO satellite communication, massive MIMO, precoder design, sparse precoder",
author = "Ding Shi and Xuzhong Zhang and Ziyu Xiang and Yuhao Zhang and Xiqi Gao and Xiaohu You and Xia, \{Xiang Gen\} and Li, \{Geoffrey Ye\}",
note = "Publisher Copyright: {\textcopyright} 2026 IEEE.; 2026 IEEE International Conference on Communications, ICC 2026 ; Conference date: 24-05-2026 Through 28-05-2026",
year = "2026",
doi = "10.1109/ICC59461.2026.11587944",
language = "English",
series = "IEEE International Conference on Communications",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "ICC 2026 - IEEE International Conference on Communications, Proceedings",
address = "United States",
}