Channel Orthogonalization in Panel-Based LIS

JV Alegría, O Edfors - arXiv preprint arXiv:2405.01919, 2024 - arxiv.org
Large intelligent surface (LIS) has gained momentum as a potential 6G-enabling technology
that expands the benefits of massive multiple-input multiple-output (MIMO). On the other …

[PDF][PDF] Tight error bounds for the signconstrained Stiefel manifold

X Chen, Y He, Z Zhang - arXiv preprint arXiv:2210.05164, 2022 - polyu.edu.hk
The sign-constrained Stiefel manifold in Rn× r is a segment of the Stiefel manifold with fixed
signs (nonnegative or nonpositive) for some entries of the matrices. It includes the …