Dual-layer optical encryption fluorescent polymer waveguide chip based on optical pulse-code modulation technique [PDF]
Nature Communications, 2023 Information encryption technique has broad applications in individual privacy, military confidentiality, and national security, but traditional electronic encryption approaches are increasingly unable to satisfy the demands of strong safety and large ...
Chunxue Wang +9 more
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Improving Data Communication of Enhanced Loran Systems Using 128-ary Polar Codes [PDF]
SensorsThe enhanced Loran (eLoran) system, a critical terrestrial backup for the Global Satellite Navigation System (GNSS), traditionally utilizes a Reed-Solomon (RS) code for its data communication, which presents limitations in error performance, particularly
Ruochen Jia, Yunxiao Li, Daiming Qu
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Jamming Simulation Analysis of LFM-Chebyshev Chaotic Bi-Phase Code Signal [PDF]
Hangkong bingqi, 2022 LFM-Chebyshev chaotic bi-phase code signal is a mixed signal which uses Chebyshev chaotic sequence as inter pulse two-phase coding and linear frequency modulation processing in the pulse. It has strong concealment and anti-jamming ability.
Song Quan, Zhang Fan, Xu Hua
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Sensors, 2022 A laser altimeter using code modulation techniques receives a backscattered pulse wider than the transmitted rectangular pulse when scanning a rough or sloped target surface.
Hyung-Chul Lim +5 more
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Coherent OTDR Using Flexible All-Digital Orthogonal Phase Code Pulse for Distributed Sensing
IEEE Access, 2020 A coherent optical time-domain reflectometer (COTDR) using flexible all-digital orthogonal phase code pulse is proposed for distributed acoustic sensing.
Wenjie Chen +7 more
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The BER Performance of the LDPC-Coded MPPM over Turbulence UWOC Channels
Photonics, 2022 Turbulence-induced fading is a critical performance degrading factor for underwater wireless optical communication (UWOC) systems. In this paper, we propose a quasi-cyclic (QC) low-density parity-check (LDPC) code with multiple-pulse-position modulation (
Hongyan Jiang +4 more
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Research on a Wind Lidar Without Blind Zone Based on the Technologies of Pseudo Random Code Phase Modulation and Heterodyne Detection [PDF]
EPJ Web of Conferences, 2020 In this measurement method, a wind lidar system with no blind zone based on the technologies of heterodyne detection and pseudorandom code phase modulation is proposed. The simulation results show the feasibility of the method. 15m range resolution and 7.
Yang FU, Liu Zheng, Zhu Xiaopeng
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Performance analysis of generalized orthogonal code index modulation system
Dianxin kexue, 2022 In order to improve the transmission efficiency of the code index modulation (CIM) system, a generalized orthogonal code index modulation (GQCIM) system with lower complexity was proposed, which was a single input single output (SISO) system.CIM system ...
Lina BIAN +4 more
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Investigation of the wakefield generation in the interaction of the intense laser pulse with gas [PDF]
مجله علوم و فنون هستهای, 2021 In the present work, the formation of the wakefield during the interaction of intense laser pulse with a gas medium has been investigated by using PIC simulation code, including the ionization process.
E. Khalilzadeh, M.J. Jafari, Z. Dehghany
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Research on the modulation format of 40Gb/s WDM-PON system [PDF]
MATEC Web of Conferences, 2022 In order to meet the transmission needs of WDM-PON system, a WDM-PON full-duplex system based on reflective semiconductor optical amplifier (RSOA) remodulation was constructed in this paper.
Wang Yilin, Zhang Chunlei
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