TY - GEN
T1 - Physical-Layer Security for Indoor Visible Light Communications with Space Shift Keying Modulation
AU - Hassan, Osama
AU - Panayirci, Erdal
AU - Poor, H. Vincent
AU - Haas, Harald
N1 - Funding Information:
KAUST under Grant No. OSR-2016-CRG5-2958-02
Funding Information:
This research has been supported by the Turkish Scientific and Research Council (TUBITAK) under 2219 International Fellowship Program and in part by KAUST under Grant No. OSR-2016-CRG5-2958-02. E. Panayirci is on sabbatical leave
Funding Information:
from Kadir Has University, Istanbul, Turkey. Prof. Harald Haas gratefully acknowledges the financial support of his research by the Wolfson Foundation and the Royal Society
Publisher Copyright:
© 2018 IEEE.
PY - 2018
Y1 - 2018
N2 - In this paper, a novel physical layer security technique is presented for indoor visible light communications (VLC) systems based on optical spatial shift keying (OSSK). Transmitters are equipped with light emitting diode (LED) arrays and in OSSK information is carried only by the LED indices rather than the transmitted symbols themselves. Assuming that the source has the channel state information (CSI) of the optical channel gains between the LEDs and a legitimate user, a pre-equalizer is designed for the transmitter, which transforms the actual channel gains into a new channel realization in which equalized channel coefficients are widely apart from each other in multiple LED fixtures within the power constraint. Since the eavesdropper's channel is not equalized, its bit error rate performance is profoundly degraded. In addition, it is shown that the proposed technique does not need to have the CSI of the eavesdropper. Also an analytical expression is derived to evaluate the capacity of OSSK exactly from which the achievable secrecy capacity of the proposed scheme is obtained easily by computer simulations. In the computer simulations, the channels for different scenarios are generated by Zemax, which is an optical design software with ray-tracing capabilities. Simulation results show that, as excellent bit error rate (BER) performance is achieved by the legitimate user, the performance of the eavesdropper degrades to a level that it is not possible to receive any meaningful information.
AB - In this paper, a novel physical layer security technique is presented for indoor visible light communications (VLC) systems based on optical spatial shift keying (OSSK). Transmitters are equipped with light emitting diode (LED) arrays and in OSSK information is carried only by the LED indices rather than the transmitted symbols themselves. Assuming that the source has the channel state information (CSI) of the optical channel gains between the LEDs and a legitimate user, a pre-equalizer is designed for the transmitter, which transforms the actual channel gains into a new channel realization in which equalized channel coefficients are widely apart from each other in multiple LED fixtures within the power constraint. Since the eavesdropper's channel is not equalized, its bit error rate performance is profoundly degraded. In addition, it is shown that the proposed technique does not need to have the CSI of the eavesdropper. Also an analytical expression is derived to evaluate the capacity of OSSK exactly from which the achievable secrecy capacity of the proposed scheme is obtained easily by computer simulations. In the computer simulations, the channels for different scenarios are generated by Zemax, which is an optical design software with ray-tracing capabilities. Simulation results show that, as excellent bit error rate (BER) performance is achieved by the legitimate user, the performance of the eavesdropper degrades to a level that it is not possible to receive any meaningful information.
KW - Physical-layer security
KW - multiple-inputsingle-output (MISO)
KW - optical spatial-shift-keying (OSSK)
KW - secrecy capacity
KW - visible light communications (VLC)
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U2 - 10.1109/GLOCOM.2018.8648035
DO - 10.1109/GLOCOM.2018.8648035
M3 - Conference contribution
AN - SCOPUS:85063513924
T3 - 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings
BT - 2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 IEEE Global Communications Conference, GLOBECOM 2018
Y2 - 9 December 2018 through 13 December 2018
ER -