Author
Al-Nahhal, Mohamed, Basar, E., Uysal, Murat
Publication Date
2019
Publication Place
-
IEEE
Subject
Visible light communication, Unipolar OFDM, Adaptive transmission, MIMO modes switching, Repetition coding, Spatial modulation, Spatial multiplexing
Type
Document
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
978-1-7281-0546-8
Record ID
89a33150-b719-4671-877b-ebd9a4b2207b
Library Location
Electrical & Electronics Engineering
Date
2019
Notes
TÜBİTAK
Sample Text
Unipolar orthogonal frequency division multiplexing (U-OFDM) appears as an attractive optical OFDM solution for emerging visible light communication (VLC) systems. This paper proposes spectral efficiency improvement for U-OFDM systems by applying adaptive transmission over realistic VLC links. This adaptive transmission includes switching among a number of multiple-input multiple-output (MIMO) modes combined with appropriate modulation size selection. The considered MIMO modes are repetition coding, spatial modulation, and spatial multiplexing, where each mode supports different modulation sizes. The selection of the corresponding MIMO mode and its modulation size is based on the received signal-to-noise ratio and target bit error rate. The proposed U-OFDM system is applied over different VLC MIMO setups with realistic channel models for 8 x 8, 4 x 4 and 2 x 2 MIMO systems. Our simulation results show that the proposed adaptive system provides a significant spectral efficiency improvement over stand-alone U-OFDM MIMO modes/setups.
DOI
10.1109/EuCNC.2019.8801994
