Channel Estimation and Physical Layer Security in Optical MIMO-OFDM based LED Index Modulation
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Date
2023
Authors
Okumus, F. Batuhan
Panayırcı, Erdal
Khalighi, Mohammad Ali
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Publisher
IEEE
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Abstract
In 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.
Description
22nd IEEE Statistical Signal Processing Workshop (SSP) -- JUL 02-05, 2023 -- VNU Univ Engn & Technol, Hanoi, VIETNAM
Keywords
Visible light communication(VLC), Orthogonal frequency division multiplexing(OFDM), Transmission, Generalized LED index modulation OFDM(GLIM-OFDM), Channel Estimation (CE), Transmission, Physical Layer Security (PLS)
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Source
2023 Ieee Statistical Signal Processing Workshop, Ssp
Volume
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Start Page
641
End Page
645