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Distributed Deployment and Dual-Frequency Concepts to Strengthen Sub-THz Wireless Systems

der Perre, Liesbet Van LU ; Callebaut, Gilles LU ; Eriksson, Thomas LU ; Sarajlic, Muris LU ; Fager, Christian ; Tufvesson, Fredrik LU orcid ; Lau, Buon Kiong LU and Larsson, Erik G. (2025) In IEEE Wireless Communications
Abstract

The vast bandwidth available at sub-THz frequencies holds great promise for high-speed wireless access, precise localization, and advanced sensing applications. However, fundamental physical constraints and technological limitations make the deployment of reliable sub-THz networks challenging. We propose a new paradigm for sub-THz coverage by transmitting the RF signals over polymer microwave fibers (PMFs) that interconnect low-complexity radio units (RUs) in a daisy-chain configuration. The distributed architecture ensures that user equipments (UEs) connect to RUs in their proximity, reducing path loss and mitigating blocking. The RUs leverage low-complexity, compact integrated antenna modules. Additionally, dual-frequency tandem... (More)

The vast bandwidth available at sub-THz frequencies holds great promise for high-speed wireless access, precise localization, and advanced sensing applications. However, fundamental physical constraints and technological limitations make the deployment of reliable sub-THz networks challenging. We propose a new paradigm for sub-THz coverage by transmitting the RF signals over polymer microwave fibers (PMFs) that interconnect low-complexity radio units (RUs) in a daisy-chain configuration. The distributed architecture ensures that user equipments (UEs) connect to RUs in their proximity, reducing path loss and mitigating blocking. The RUs leverage low-complexity, compact integrated antenna modules. Additionally, dual-frequency tandem operation is proposed, integrating the sub-THz system with a sub-10 GHz system that provides control signalling and a robust fallback solution for the sub- THz system. This proposed tandem architecture can open up the full potential of sub-THz technology and paves the way to cost- and energy-efficient, high-performance, real-time connectivity in dynamic environments.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
epub
subject
keywords
distributed networks, dual-frequency, radio-over-fiber, Sub-THz
in
IEEE Wireless Communications
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:105020909141
ISSN
1536-1284
DOI
10.1109/MWC.2025.3600945
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2002-2012 IEEE.
id
ef7f8ba3-163c-49e2-bf91-3c152d170c22
date added to LUP
2026-01-13 14:10:35
date last changed
2026-01-13 14:11:21
@article{ef7f8ba3-163c-49e2-bf91-3c152d170c22,
  abstract     = {{<p>The vast bandwidth available at sub-THz frequencies holds great promise for high-speed wireless access, precise localization, and advanced sensing applications. However, fundamental physical constraints and technological limitations make the deployment of reliable sub-THz networks challenging. We propose a new paradigm for sub-THz coverage by transmitting the RF signals over polymer microwave fibers (PMFs) that interconnect low-complexity radio units (RUs) in a daisy-chain configuration. The distributed architecture ensures that user equipments (UEs) connect to RUs in their proximity, reducing path loss and mitigating blocking. The RUs leverage low-complexity, compact integrated antenna modules. Additionally, dual-frequency tandem operation is proposed, integrating the sub-THz system with a sub-10 GHz system that provides control signalling and a robust fallback solution for the sub- THz system. This proposed tandem architecture can open up the full potential of sub-THz technology and paves the way to cost- and energy-efficient, high-performance, real-time connectivity in dynamic environments.</p>}},
  author       = {{der Perre, Liesbet Van and Callebaut, Gilles and Eriksson, Thomas and Sarajlic, Muris and Fager, Christian and Tufvesson, Fredrik and Lau, Buon Kiong and Larsson, Erik G.}},
  issn         = {{1536-1284}},
  keywords     = {{distributed networks; dual-frequency; radio-over-fiber; Sub-THz}},
  language     = {{eng}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Wireless Communications}},
  title        = {{Distributed Deployment and Dual-Frequency Concepts to Strengthen Sub-THz Wireless Systems}},
  url          = {{http://dx.doi.org/10.1109/MWC.2025.3600945}},
  doi          = {{10.1109/MWC.2025.3600945}},
  year         = {{2025}},
}