A5101544568- Optical Network Technologies
- Ferroelectric and Piezoelectric Materials
- Advanced Photonic Communication Systems
- Optical Systems and Laser Technology
- Advanced Memory and Neural Computing
- PAPR reduction in OFDM
- Infrared Target Detection Methodologies
- Neural Networks and Reservoir Computing
- Advanced optical system design
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Perovskite Materials and Applications
- Air Quality and Health Impacts
- graph theory and CDMA systems
- Adsorption and Cooling Systems
- Optical Wireless Communication Technologies
- Atmospheric chemistry and aerosols
- Advanced ceramic materials synthesis
- High Entropy Alloys Studies
- Silicon and Solar Cell Technologies
- Advancements in Photolithography Techniques
- Air Quality Monitoring and Forecasting
- Advanced Measurement and Detection Methods
- Error Correcting Code Techniques
- Thermal Expansion and Ionic Conductivity
Hebei University of Science and Technology
2019-2024
Shenyang University of Technology
2019-2024
Tianjin University of Technology
2019-2024
Southwest Petroleum University
2021-2024
Nanjing University of Information Science and Technology
2018-2023
Institute of Optics and Electronics, Chinese Academy of Sciences
2012-2023
Beijing Municipal Ecological and Environmental Monitoring Center
2022-2023
University of Electronic Science and Technology of China
2014-2022
Chinese Academy of Sciences
2017-2022
National University of Defense Technology
2022
In recent years, antiferroelectric materials have been attracting considerable attention as energy storage capacitors due to their potential applications in pulsed power systems. this work, Pb0.88Ca0.12ZrO3 (PCZ) thin films were prepared via chemical solution deposition and annealed using rapid thermal annealing. The microstructures of PCZ controlled annealing temperature, the effects on electric properties performance systematically studied. Our results indicate that at 550 °C crystallized...
Abstract We prepared the novel high‐entropy ( x RE 1/ ) 2 Si O 7 (RE = Y, Yb, Er, Sc, Gd and Eu, 2–6) ceramics by a two‐step method for application of thermal environmental barrier coatings (TEBCs), effect configuration entropy lattice distortion on microstructures properties at high temperature were investigated. The results showed that resulted from mass disorder can only contribute to stability microstructure. Lattice should be responsible reduction in properties, which may due...
This paper proposes a 7-dimensional ( <xref ref-type="disp-formula" rid="deqn6-deqn7" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">7D</xref> ) Cellular Neural Network (CNN) based offset quadrature amplitude modulation filter bank multicarrier (OQAM-FBMC) encryption scheme for seven core fiber. The chaotic sequences generated by 7D CNN are applied to produce the masking vectors encrypt phase, carrier frequency, and time. In order verify performance...
This paper proposes a 3-dimensional (3D) carrier-less amplitude and phase modulation (CAP) based on pyramid constellation design encryption scheme for 7-core fiber in passive optical network (PON). The chaos sequences generated by the 4D hyperchaotic system are applied to produce masking factor, Rubik's cube rotation rules used flip rotate points. To verify performance of proposed 3D CAP-PON system, 25.5Gb/s encrypted Pyraminx-3D-CAP-16 signal transmission over 2 km is experimentally...
In this paper, we propose a performance improvement of non-orthogonal multiple access (NOMA) with three-dimensional (3D) constellation and two-dimensional Inverse Fast Fourier Transform IFFT modulator (2D-IFFT) for the passive optical network (PON). Two kinds 3D mapping are designed generation NOMA (3D-NOMA) signal. Higher-order modulation signals can be obtained by superimposing different power levels pair mapping. Successive interference cancellation (SIC) algorithm is implemented at...
The hybrid perovskite CH3NH3PbX3 (X = Cl, Br, I) is a promising material for developing novel optoelectronic devices. Due to its intrinsic non-layered crystal structure, it remains challenging synthesize two-dimensional (2D) single-crystalline with nanoscale thickness. Here, we report bottom-up approach fabricate large 2D crystals via liquid-phase growth on mica substrate. strong potassium-halogen interactions at the perovskite/mica interface decrease energy, driving striking in-plane of...
In order to explore the temporal-spatial patterns and possible health effects of ozone in Shenzhen, daily concentrations mortality caused by cardiovascular respiratory diseases were collected. Using Geographic Information System (GIS) SPSS, spatial temporal Shenzhen illustrated. a generalized additive model (GAM), associations between causing analyzed, adjusted for meteorological factors other major air pollutants including fine particulate matter (PM2.5), nitrogen dioxide (NO2) carbon...
Vehicle emissions have become a significant source of air pollution in urban cities, especially China. Mobile sources account for 45% local fine particle the Chinese capital Beijing. The Beijing–Tianjin–Hebei (BTH) area, one China’s most representative clusters, is suffering from severe pollution. With rapid growth vehicle ownership past two decades, China also undergone great changes under various management measures. BTH region place where mobile emission was carried out earlier. It...
Abstract In recent years, antiferroelectric materials have attracted significant attention as energy storage in pulsed power systems. this study, (1‐x)PbZrO 3 ‐xSrTiO (PZO‐STO) films were prepared, and the effects of STO content on microstructure performance thin investigated detail. The results showed that when PZO/STO ratio was near morphotropic phase boundary, long‐range PZO‐STO‐ordered structure could be broken by paraelectric nanograins generated at grain boundary. number nanoparticles...
Adsorption refrigeration is considered a green technology that can be driven by low-grade heat source to generate cooling power. However, the large bulk of adsorption chillers limit its use especially automobiles. The size chiller very important consideration for applying in automobile. new type compact applied automobile was proposed corresponding with specification installation, and about 40 L volume this paper. A vacuum valve used increase considerably. Thus, has four pieces vapor valves...
Few-mode fiber (FMF), a mode multiplex technique, has been candidate to provide high transmission capability in next-generation elastic optical networks (EONs), where the probabilistic shaping (PS) technology is widely used approach Shannon limit. In this paper, we investigate fast and accurate method of modulation format recognition (MFR) received signals based on transfer learning network (TLN) PS-based FMF-EONs. TLN can apply feature extraction ability convolutional neural analysis...
In this Letter, we propose a novel, to the best of our knowledge, way reduce peak average power ratio (PAPR) based on selective mapping-partial transmit sequence (SLM-PTS) method, which uses chaotic sequences give rise random phases and split positions. For first time, public private keys are both used for encryption in sparse code multiple access-orthogonal frequency division multiplexing (SCMA-OFDM) system. The improvement PAPR while show great promises protection privacy different users....
A highly secure and reliable optical orthogonal frequency division multiplexing passive network (OFDM-PON) based on the chaos encryption inside polar code scheme is proposed. The 3-dimensional Chua's circuit model adopted to realize chaotic during encoding with low complexity. three sequences generated by are used encrypt information index bit matrix, frozen bits (during encoding) subcarrier sequence, respectively. BER security performance of transmission system enhanced our method. 70 Gb/s...
A secure orthogonal chirp division multiplexing (OCDM) mode multiplexed (MDM) short-reach optical communication based on time-frequency joint perturbation is proposed in this paper. Firstly, the discrete Fresnel transform (DFnT) was used to realize digital realization of OCDM, and then Lorenz chaos model Logistic were combined chirped subcarriers symbols. The up-conversion (DUC) OCDM signal transmit it MDM system. has good pulse compression spread spectrum capability, maximum can be achieved...
A new optical transmitting scheme based on chaotic constant component distribution matcher (CCDM) and Polar coding was proposed. The data is first encrypted by using a five-dimensional sequence. Then the divided into two paths to perform CCDM encryption operations with different schemes. Finally, channels are merged, subcarriers scrambled. transmission experiment of 16QAM-OFDM signal 2 km seven-core fiber conducted verify scheme's feasibility. experimental results show that received power...
For the grid-connected system, unbalanced and harmonic components of three-phase grid voltage have a significant impact on accuracy synchronization. And positive, negative sequences, harmonics, as well dc component are difficult to separate extract in fast precise way. In this paper, new fully digital phase-locked loop (FDPLL) is proposed. Compared with existing continuous-domain methods, it simple implement, able quickly accurately positive sequence for order verify effectiveness...