Distributed Multiuser MIMO for LiFi: Experiments in an Operating Room
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00351479" target="_blank" >RIV/68407700:21230/21:00351479 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1109/JLT.2021.3091385" target="_blank" >https://doi.org/10.1109/JLT.2021.3091385</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/JLT.2021.3091385" target="_blank" >10.1109/JLT.2021.3091385</a>
Alternative languages
Result language
angličtina
Original language name
Distributed Multiuser MIMO for LiFi: Experiments in an Operating Room
Original language description
Networked optical wireless communication, also denoted as LiFi, is expected to play an important role in so-called smart hospitals. In this paper, we present the first experimental study of LiFi in an operating room at Motol University Hospital in Prague, Czech Republic. First, we perform one-to-one measurements using an optical transmitter (Tx) and receiver (Rx) and observe that channels with a free LOS provide sufficient signal strength for mobile communication inside the operating room. Then we combine the individual LOS links into a multiple-input multiple-output (MIMO) link using four distributed transmitters representing a wireless infrastructure, and six distributed receivers representing medical devices. In this configuration, at least two strong singular values of the MIMO channel matrix are observed which allow spatial multiplexing. By appropriately clustering the transmitters and selecting the users, mobile devices can be served in parallel. For data transmission, several multiplexing schemes such as time-division multiple access (TDMA) with one and two best links, TDMA with spatial reuse, space-division multiple access (SDMA) with two best links with and without zero forcing (ZF) are considered. Results show that SDMA with ZF increases the data rate by 2.7 times compared to baseline TDMA, resulting in a total data rate of 600 Mbit/s. CCBY
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20202 - Communication engineering and systems
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
IEEE/OSA Journal of Lightwave Technology
ISSN
0733-8724
e-ISSN
1558-2213
Volume of the periodical
39
Issue of the periodical within the volume
18
Country of publishing house
US - UNITED STATES
Number of pages
14
Pages from-to
5730-5743
UT code for WoS article
000703026100007
EID of the result in the Scopus database
2-s2.0-85112406425