Okumus, F. BatuhanPanayırcı, ErdalKhalighi, Mohammad Ali2023-10-192023-10-1920230978-1-6654-5245-82373-0803https://doi.org/10.1109/SSP53291.2023.10208079https://hdl.handle.net/20.500.12469/522722nd IEEE Statistical Signal Processing Workshop (SSP) -- JUL 02-05, 2023 -- VNU Univ Engn & Technol, Hanoi, VIETNAMIn this paper, we propose a new and low-complexity channel estimation algorithm for the generalized LED index modulation (GLIM), recently proposed for visible-light communication systems based on multi-input multi-output (MIMO) and orthogonal frequency-division multiplexing (OFDM). For this scheme, denoted by GLIM-OFDM, we investigate the bit-error rate (BER), the mean-square error (MSE) of channel estimation, as well as the Cramer-Rao bound on the latter. Furthermore, we present a novel physical layer security (PLS) technique for the GLIM-OFDM scheme using precoding at the transmitter assuming it has the channel state information (CSI) between the LEDs and a legitimate user, but no knowledge of the CSI corresponding to eavesdroppers. The efficiency of the proposed PLS technique is demonstrated through numerical results.eninfo:eu-repo/semantics/closedAccessVisible light communication(VLC)Orthogonal frequency division multiplexing(OFDM)TransmissionGeneralized LED index modulation OFDM(GLIM-OFDM)Channel Estimation (CE)TransmissionPhysical Layer Security (PLS)Conference Object641645WOS:00105109170013010.1109/SSP53291.2023.102080792-s2.0-85168906017N/AN/A