Distributed MIMO Experiment Using LIFI Over Plastic Optical Fiber

Sepideh Mohammadi Kouhini, Sreelal Maravanchery Mana, Ronald Freund, Volker Jugnickel, Carina Ribeiro Barbio Correa, Eduward Tangdiongga, Thiago Bitencourt Cunha, Xiong Deng, J.P. Linnartz

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review


This paper shows the feasibility of a networked
LiFi system using a distributed multiple-input multiple-output
(MIMO) link for optical wireless transmission and a plastic
optical fiber (POF) link as a fixed front-haul between distributed
optical front-ends, and a centralized signal processing unit. The
concatenation of POF and optical wireless links yields an easyto-
install all-optical LiFi system which is robust against both,
blockage of individual light beams and electromagnetic interference.
A significant cost-down appears by the use of colored LEDs
to feed the POF link with multiple optical signals, and wavelength
division demultiplexing filters. The spatial crosstalk in the wireless
link and the spectral crosstalk over the POF link can be
jointly compensated by the same end-to-end MIMO processing.
A common signal model, which includes the combined effects of
both links are provided to characterize the proposed all-optical
LiFi system. We report the first experimental findings when
using space-division multiplexing (SDM), i.e., multiple POFs, and
wavelength-division multiplexing (WDM), i.e., multiple colors in
the front-haul, indicating that the performance is mostly limited
by the wireless link. Moreover, we show that the positions of
mobile users in the wireless link, as well as gain variations and
spectral crosstalk in the front-haul link, influence the singular
values and the achievable data rates of the LiFi system.
Originele taal-2Engels
TitelIEEE Global Communications Conference - Globecom 2020
StatusGeaccepteerd/In druk - dec 2020

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