TY - GEN
T1 - Performance of MIMO enhanced unipolar OFDM with realistic indoor visible light channel models
AU - Yesilkaya, Anil
AU - Miramirkhani, Farshad
AU - Basar, Ertugrul
AU - Panayirci, Erdal
AU - Uysal, Murat
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/9/12
Y1 - 2016/9/12
N2 - Visible light communication (VLC) involves the dual use of illumination infrastructure for high speed wireless access. Designing such optical based communication systems, realistic indoor optical channel modeling becomes an important issue to be handled. In this paper, first we obtain new realistic indoor VL channel characterizations and models, in a multiple-input multiple-output (MIMO) transmission scenario, using non-sequential ray tracing approach for the channel impulse responses (CIRs). Practical issues such as number of light emitting diode (LED) chips per luminary, spacing between LED chips, objects inside the room and cabling topology are also investigated. On the other hand, since indoor optical channels exhibit frequency selectivity, multi-carrier communication systems, particularly orthogonal frequency division multiplexing (OFDM) is used to handle the resulting inter-symbol interference in VLC systems. Hence, we propose a new MIMO-OFDM based VLC system, called MIMO enhanced unipolar OFDM (MIMO-eU-OFDM) by combining MIMO transmission techniques with the recently proposed eU-OFDM scheme. The bit error rate (BER) performance of the proposed system is investigated in the presence of the 2 χ 2 and 4 χ 4 realistic MIMO VLC channels and its BER performance is compared with the reference optical MIMO-OFDM systems.
AB - Visible light communication (VLC) involves the dual use of illumination infrastructure for high speed wireless access. Designing such optical based communication systems, realistic indoor optical channel modeling becomes an important issue to be handled. In this paper, first we obtain new realistic indoor VL channel characterizations and models, in a multiple-input multiple-output (MIMO) transmission scenario, using non-sequential ray tracing approach for the channel impulse responses (CIRs). Practical issues such as number of light emitting diode (LED) chips per luminary, spacing between LED chips, objects inside the room and cabling topology are also investigated. On the other hand, since indoor optical channels exhibit frequency selectivity, multi-carrier communication systems, particularly orthogonal frequency division multiplexing (OFDM) is used to handle the resulting inter-symbol interference in VLC systems. Hence, we propose a new MIMO-OFDM based VLC system, called MIMO enhanced unipolar OFDM (MIMO-eU-OFDM) by combining MIMO transmission techniques with the recently proposed eU-OFDM scheme. The bit error rate (BER) performance of the proposed system is investigated in the presence of the 2 χ 2 and 4 χ 4 realistic MIMO VLC channels and its BER performance is compared with the reference optical MIMO-OFDM systems.
KW - MIMO enhanced unipolar orthogonal frequency division multiplexing (MIMO-eU-OFDM)
KW - Optical wireless communication (OWC)
KW - realistic indoor MIMO-VLC channel modeling
UR - http://www.scopus.com/inward/record.url?scp=84989811337&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84989811337&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2016.7564676
DO - 10.1109/WCNC.2016.7564676
M3 - Conference contribution
AN - SCOPUS:84989811337
T3 - IEEE Wireless Communications and Networking Conference, WCNC
BT - 2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2016 IEEE Wireless Communications and Networking Conference, WCNC 2016
Y2 - 3 April 2016 through 7 April 2016
ER -