TY - GEN
T1 - Adaptive Unipolar MIMO-OFDM for Visible Light Communications
AU - Al-Nahhal, Mohamed
AU - Basar, Ertugrul
AU - Uysal, Murat
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - 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 × 8, 4 × 4 and 2 × 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.
AB - 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 × 8, 4 × 4 and 2 × 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.
KW - MIMO modes switching
KW - Visible light communication
KW - adaptive transmission
KW - repetition coding
KW - spatial modulation
KW - spatial multiplexing.
KW - unipolar OFDM
UR - http://www.scopus.com/inward/record.url?scp=85071731766&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85071731766&partnerID=8YFLogxK
U2 - 10.1109/EuCNC.2019.8801994
DO - 10.1109/EuCNC.2019.8801994
M3 - Conference contribution
AN - SCOPUS:85071731766
T3 - 2019 European Conference on Networks and Communications, EuCNC 2019
SP - 73
EP - 77
BT - 2019 European Conference on Networks and Communications, EuCNC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 28th European Conference on Networks and Communications, EuCNC 2019
Y2 - 18 June 2019 through 21 June 2019
ER -