TY - GEN
T1 - Physical-layer security in visible light communications
AU - Yesilkaya, Anil
AU - Cogalan, Tezcan
AU - Erkucuk, Serhat
AU - Sadi, Yalcin
AU - Panayirci, Erdal
AU - Haas, Harald
AU - Vincent Poor, H.
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/3
Y1 - 2020/3
N2 - Optical wireless communications (OWC) and its potential to solve physical layer security (PLS) issues are becoming important research areas in 6G communications systems. In this paper, an overview of PLS in visible light communications (VLC), is presented. Then, two new PLS techniques based on generalized space shift keying (GSSK) modulation with spatial constellation design (SCD) and non-orthogonal multiple access (NOMA) cooperative relaying are introduced. In the first technique, the PLS of the system is enhanced by the appropriate selection of a precoding matrix for randomly activated light emitting diodes (LEDs). With the aid of a legitimate user's (Bob's) channel state information (CSI) at the transmitter (CSIT), the bit error ratio (BER) of Bob is minimized while the BER performance of the potential eavesdroppers (Eves) is significantly degraded. In the second technique, superposition coding with uniform signaling is used at the transmitter and relays. The design of secure beamforming vectors at the relay nodes along with NOMA techniques is used to enhance PLS in a VLC system. Insights gained from the improved security levels of the proposed techniques are used to discuss how PLS can be further improved in future generation communication systems by using VLC.
AB - Optical wireless communications (OWC) and its potential to solve physical layer security (PLS) issues are becoming important research areas in 6G communications systems. In this paper, an overview of PLS in visible light communications (VLC), is presented. Then, two new PLS techniques based on generalized space shift keying (GSSK) modulation with spatial constellation design (SCD) and non-orthogonal multiple access (NOMA) cooperative relaying are introduced. In the first technique, the PLS of the system is enhanced by the appropriate selection of a precoding matrix for randomly activated light emitting diodes (LEDs). With the aid of a legitimate user's (Bob's) channel state information (CSI) at the transmitter (CSIT), the bit error ratio (BER) of Bob is minimized while the BER performance of the potential eavesdroppers (Eves) is significantly degraded. In the second technique, superposition coding with uniform signaling is used at the transmitter and relays. The design of secure beamforming vectors at the relay nodes along with NOMA techniques is used to enhance PLS in a VLC system. Insights gained from the improved security levels of the proposed techniques are used to discuss how PLS can be further improved in future generation communication systems by using VLC.
KW - Generalized space shift keying (GSSK)
KW - Non-orthogonal multiple access (NOMA)
KW - Physical-layer security
KW - Visible light communications (VLC)
UR - http://www.scopus.com/inward/record.url?scp=85086314529&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85086314529&partnerID=8YFLogxK
U2 - 10.1109/6GSUMMIT49458.2020.9083799
DO - 10.1109/6GSUMMIT49458.2020.9083799
M3 - Conference contribution
AN - SCOPUS:85086314529
T3 - 2nd 6G Wireless Summit 2020: Gain Edge for the 6G Era, 6G SUMMIT 2020
BT - 2nd 6G Wireless Summit 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd 6G Wireless Summit, 6G SUMMIT 2020
Y2 - 17 March 2020 through 20 March 2020
ER -