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An all-optical encryption/decryption scheme for 10-Gbaud quadrature phase shift keying (QPSK) and binary phase shift keying (BPSK) signals based on hybrid modulation formats exclusive-or (HMF-XOR) gates is proposed. Both theoretical analysis and simulation results are conducted to evaluate the feasibility of optical encryption/decryption scheme. The received OSNR penalties of decrypted QPSK and BPSK...
We propose a scheme of ultraviolet (UV) communication system, with polar channel coding method. The bit error rate (BER) performance of the UV polar code scheme is analyzed by simulations and offline experiments, in contrast with low-density parity-check (LDPC) scheme. Results suggest that the polar code scheme has a better BER performance than LDPC scheme in the UV communication system.
This paper provides a theoretical model to analyze the performance of non-line-of-sight (NLOS) ultraviolet (UV) communication systems with multi-user interference (MUI). The model is developed on the basis of a multiple-scattering Monte Carlo (MC) model. The system geometry and algorithm flowchart are presented. Numerical simulations are conducted for an application scenario where both a transmitter...
Presented in this paper is an experimental research on the mobile sensor and communication system based on transmitting with ultraviolet in either line-of-sight or non-line-of-sight conditions. The performance of this type of communication system is shown on the experimental platform which is set up. It proves the feasibility of ultraviolet communication system.
In this paper, a novel optical label and payload separation scheme, based on Semiconductor Optical Amplifier Mach-Zehnder interferometer (SOA-MZIs) is proposed. Numerical simulations show that the intensity contrast ratio for label and payload are more than 15dB. In addition, the SOA-MZI parameters are discussed and designed to optimize the performance of the proposed scheme.
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