In this paper, a security enhanced physical layer encryption scheme is proposed for
coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. This …

In this paper, a novel three-dimensional selective probabilistic shaping (3D-SPS) and chaos-
based multi-stage encryption scheme is proposed for physical layer security enhancement …

In recent years, the self-homodyne coherent (SHC) system and the constellation shaping
(CS) technique have drawn considerable attention due to their abilities to further improve the …

The physical layer security of millimeter-wave radio-over-fiber (MMW-RoF) system at W-
band is a promising topic. This paper experimentally demonstrates a one-time pad scheme …

Data security is becoming more critical in networks as high-speed and large-capacity optical
transmission becomes more common. Cryptographic protocols at the MAC layer and higher …

This paper proposes a high-security multi-level constellation shaping trellis-coded
modulation (TCM) method based on clustering mapping rules, which is suitable for passive …

This paper proposes a physical layer security strategy of space division multiplex orthogonal
frequency division multiplexing system based on memristive neural network (MNN). Among …

In this Letter, a delta-sigma modulation (DSM) encryption technique in a W-band RoF
system is proposed. By performing DSM with different over-sample ratios (OSRs) on the …

We propose and demonstrate a new analog–digital combined high-secure optical
communication system based on chaotic circuit driving, which achieves encryption in the …

We propose a nonlinear concealing–restoring system (CRS) set on the data link layer of the
open-systems-interconnection (OSI) reference model to secure the data on physical layer …