Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Channel Orthogonalization in Panel-Based LIS

Alegría, Juan Vidal LU orcid and Edfors, Ove LU orcid (2025) 2025 IEEE Wireless Communications and Networking Conference, WCNC 2025 In IEEE Wireless Communications and Networking Conference, WCNC
Abstract

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 hand, orthogonal space-division multiplexing (OSDM) may give a promising direction for efficient exploitation of the spatial resources, analogous as what is achieved with orthogonal frequency-division multiplexing (OFDM) in the frequency domain. To this end, we study how to enforce channel orthogonality in a panel-based LIS (P-LIS) scenario. Our proposed method consists of having a subset of active LIS-panels coherently serving a set of users, and another subset of LIS-panels operating in a novel low-power mode by implementing a receive and re-transmit (RRTx)... (More)

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 hand, orthogonal space-division multiplexing (OSDM) may give a promising direction for efficient exploitation of the spatial resources, analogous as what is achieved with orthogonal frequency-division multiplexing (OFDM) in the frequency domain. To this end, we study how to enforce channel orthogonality in a panel-based LIS (P-LIS) scenario. Our proposed method consists of having a subset of active LIS-panels coherently serving a set of users, and another subset of LIS-panels operating in a novel low-power mode by implementing a receive and re-transmit (RRTx) process. This results in an inter-symbol interference (ISI) channel, where we characterize the RRTx processing required to achieve simultaneous orthogonality in time and space. We then employ the remaining degrees of freedom (DoFs) from the orthogonality constraint to minimize the RRTx processing power, where we derive a closed-form global minimizer, allowing for efficient implementation of the proposed scheme.

(Less)
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Channel orthogonalization, Inter-symbol interference (ISI) channel, Large intelligent surface (LIS), Orthogonal space-division multiplexing (OSDM)
host publication
2025 IEEE Wireless Communications and Networking Conference, WCNC 2025
series title
IEEE Wireless Communications and Networking Conference, WCNC
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
2025 IEEE Wireless Communications and Networking Conference, WCNC 2025
conference location
Milan, Italy
conference dates
2025-03-24 - 2025-03-27
external identifiers
  • scopus:105006457540
ISSN
1525-3511
ISBN
9798350368369
DOI
10.1109/WCNC61545.2025.10978704
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 IEEE.
id
a07f33e1-6f84-4de2-9713-9c91b15fbb76
date added to LUP
2025-08-18 15:14:54
date last changed
2025-08-18 15:15:26
@inproceedings{a07f33e1-6f84-4de2-9713-9c91b15fbb76,
  abstract     = {{<p>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 hand, orthogonal space-division multiplexing (OSDM) may give a promising direction for efficient exploitation of the spatial resources, analogous as what is achieved with orthogonal frequency-division multiplexing (OFDM) in the frequency domain. To this end, we study how to enforce channel orthogonality in a panel-based LIS (P-LIS) scenario. Our proposed method consists of having a subset of active LIS-panels coherently serving a set of users, and another subset of LIS-panels operating in a novel low-power mode by implementing a receive and re-transmit (RRTx) process. This results in an inter-symbol interference (ISI) channel, where we characterize the RRTx processing required to achieve simultaneous orthogonality in time and space. We then employ the remaining degrees of freedom (DoFs) from the orthogonality constraint to minimize the RRTx processing power, where we derive a closed-form global minimizer, allowing for efficient implementation of the proposed scheme.</p>}},
  author       = {{Alegría, Juan Vidal and Edfors, Ove}},
  booktitle    = {{2025 IEEE Wireless Communications and Networking Conference, WCNC 2025}},
  isbn         = {{9798350368369}},
  issn         = {{1525-3511}},
  keywords     = {{Channel orthogonalization; Inter-symbol interference (ISI) channel; Large intelligent surface (LIS); Orthogonal space-division multiplexing (OSDM)}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Wireless Communications and Networking Conference, WCNC}},
  title        = {{Channel Orthogonalization in Panel-Based LIS}},
  url          = {{http://dx.doi.org/10.1109/WCNC61545.2025.10978704}},
  doi          = {{10.1109/WCNC61545.2025.10978704}},
  year         = {{2025}},
}