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Frequency-selective wallpaper for indoor interference reduction and MIMO capacity improvement

Rodríguez, José Víctor LU ; Gustafsson, Mats LU orcid ; Molina-García-Pardo, José Maríav ; Juan-Llácer, Leandro and Rodríguez-Rodríguez, Ignacio (2020) In Symmetry 12(5).
Abstract

This paper presents the design and features of frequency-selective wallpaper-based on periodic and symmetric metallic hexagons-intended to be attached to standard walls for filtering out 5GHz signals (e.g., IEEE 802.11a systems)without blocking other selected radio communication services (e.g., cellular mobile communication signals). It analyzes the characteristics of the radio channel-as found within standard indoor environments-with both regular walls and walls with the proposed frequency-selective wallpaper, examined using a ray-launching programfor single-input single-output (SISO) and multiple-input multiple-output (MIMO) systems. This allows the harvesting of parameters, including channel capacity, power delay profile, and... (More)

This paper presents the design and features of frequency-selective wallpaper-based on periodic and symmetric metallic hexagons-intended to be attached to standard walls for filtering out 5GHz signals (e.g., IEEE 802.11a systems)without blocking other selected radio communication services (e.g., cellular mobile communication signals). It analyzes the characteristics of the radio channel-as found within standard indoor environments-with both regular walls and walls with the proposed frequency-selective wallpaper, examined using a ray-launching programfor single-input single-output (SISO) and multiple-input multiple-output (MIMO) systems. This allows the harvesting of parameters, including channel capacity, power delay profile, and signal-to-interference ratio, for proper comparison between the two environments under study: with and without the presented wallpaper. The achieved results clearly show that the use of the proposed frequency-selective wallpaper in an indoor scenario reduces interference levels by an additional attenuation of up to 20 dB in comparison to an unpapered wall. Additionally, with MIMO systems, radio channel characteristics, such as capacity, are improved due to the increase in the magnitude of all singular values of the channel transfer matrix compared to the unpapered wall case, thereby leading to the existence of more relevant subchannels.

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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Frequency-selective surfaces, MIMO systems, Radio channel architecture
in
Symmetry
volume
12
issue
5
article number
695
publisher
MDPI AG
external identifiers
  • scopus:85085358616
ISSN
2073-8994
DOI
10.3390/SYM12050695
language
English
LU publication?
yes
id
f882f8b6-6a63-4cf8-8d41-da67506d0811
date added to LUP
2020-06-17 11:38:19
date last changed
2022-04-18 23:09:57
@article{f882f8b6-6a63-4cf8-8d41-da67506d0811,
  abstract     = {{<p>This paper presents the design and features of frequency-selective wallpaper-based on periodic and symmetric metallic hexagons-intended to be attached to standard walls for filtering out 5GHz signals (e.g., IEEE 802.11a systems)without blocking other selected radio communication services (e.g., cellular mobile communication signals). It analyzes the characteristics of the radio channel-as found within standard indoor environments-with both regular walls and walls with the proposed frequency-selective wallpaper, examined using a ray-launching programfor single-input single-output (SISO) and multiple-input multiple-output (MIMO) systems. This allows the harvesting of parameters, including channel capacity, power delay profile, and signal-to-interference ratio, for proper comparison between the two environments under study: with and without the presented wallpaper. The achieved results clearly show that the use of the proposed frequency-selective wallpaper in an indoor scenario reduces interference levels by an additional attenuation of up to 20 dB in comparison to an unpapered wall. Additionally, with MIMO systems, radio channel characteristics, such as capacity, are improved due to the increase in the magnitude of all singular values of the channel transfer matrix compared to the unpapered wall case, thereby leading to the existence of more relevant subchannels.</p>}},
  author       = {{Rodríguez, José Víctor and Gustafsson, Mats and Molina-García-Pardo, José Maríav and Juan-Llácer, Leandro and Rodríguez-Rodríguez, Ignacio}},
  issn         = {{2073-8994}},
  keywords     = {{Frequency-selective surfaces; MIMO systems; Radio channel architecture}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{5}},
  publisher    = {{MDPI AG}},
  series       = {{Symmetry}},
  title        = {{Frequency-selective wallpaper for indoor interference reduction and MIMO capacity improvement}},
  url          = {{http://dx.doi.org/10.3390/SYM12050695}},
  doi          = {{10.3390/SYM12050695}},
  volume       = {{12}},
  year         = {{2020}},
}