A5100449425- Advanced Wireless Communication Techniques
- Wireless Communication Networks Research
- Optical Network Technologies
- PAPR reduction in OFDM
- Cooperative Communication and Network Coding
- Advanced MIMO Systems Optimization
- Advanced Photonic Communication Systems
- Error Correcting Code Techniques
- Mobile Ad Hoc Networks
- Wireless Networks and Protocols
- Advanced Optical Network Technologies
- Power Line Communications and Noise
- Geotechnical Engineering and Underground Structures
- Advanced Algorithms and Applications
- Energy Load and Power Forecasting
- Full-Duplex Wireless Communications
- Microgrid Control and Optimization
- Power Systems and Renewable Energy
- Face recognition and analysis
- Blind Source Separation Techniques
- Video Surveillance and Tracking Methods
- Non-Destructive Testing Techniques
- Advanced Sensor and Control Systems
- Telecommunications and Broadcasting Technologies
- Wireless Communication Security Techniques
University of Science and Technology Beijing
2018-2025
National University of Defense Technology
2013-2025
China University of Geosciences
2023-2025
Shandong Academy of Sciences
2024
Qilu University of Technology
2024
Jilin University
2024
China University of Petroleum, Beijing
2024
Southeast University
2024
Lanzhou University of Technology
2006-2024
Shanghai University of Engineering Science
2023-2024
Extremely diverse service requirements are one of the critical challenges for upcoming fifth-generation (5G) radio access technologies. As a solution, mixed numerologies transmission is proposed as new air interface by assigning different to subbands. However, coexistence multiple induces inter-numerology interference (INI), which deteriorates system performance. In this paper, theoretical model INI established windowed orthogonal frequency division multiplexing (W-OFDM) systems. The...
In this paper, we devise a highly efficient machine learning-based channel estimation for orthogonal frequency division multiplexing (OFDM) systems, in which the training of estimator is performed online. A simple learning module employed proposed estimator. The process thus much faster and required data reduced significantly. Besides, construction approach utilizing least square (LS) results so that can be collected during transmission. feasibility novel verified by theoretical analysis...
Reservoir geological modeling plays a crucial role in characterizing the spatial distribution and heterogeneity of subsurface reservoirs. The exploration deep oil gas resources is not only global trend industry but also an inevitable choice for China to ensure energy security achieve sustainable development industry. Oil technologies have made continuous breakthroughs, providing strong support sustained increase China’s ultra-deep production. Deep reservoirs exhibit high levels...
In high-capacity and short-reach applications, double-sideband self-coherent detection (DSB-SCD) has garnered significant attention due to its ability recover optical fields of DSB signals without requiring a local oscillator. However, DSB-SCD is fundamentally constrained by the non-ideal receiver transfer function, necessitating guard band between carrier signal. While conventional twin-single-sideband (twin-SSB) modulation scheme addresses this requirement, it incurs substantial...
In this paper, we have proposed a filter-assisted self-coherent detection (FASCD) scheme that reconstructs the optical field of dual-polarization complex-valued double-sideband (DP-CV-DSB) signal. At receiver, carrier is extracted using an bandpass filter (OBPF), and pair orthogonal carriers constructed to achieve polarization-division multiplexing (PDM) by Faraday rotator mirror (FRM). To address issue polarization crosstalk, channel estimation performed least squares (LS) method, results...
Mixed-numerology transmission is proposed to support a variety of communication scenarios with diverse requirements. However, as the orthogonal frequency division multiplexing (OFDM) remains basic waveform, peak-to average power ratio (PAPR) problem still cumbersome. In this paper, based on iterative clipping and filtering (ICF) optimization methods, we investigate PAPR reduction in mixed-numerology systems. We first illustrate that direct extension classical ICF brings about accumulation...
In this letter, we study the robust artificial noise (AN) aided transmit design for a multiple-input single-output (MISO) wiretap channel with single-antenna eavesdropper. We consider two uncertainty models imperfect state information (CSI) on main and eavesdropper's channels at transmitter. For deterministic model, solve worst-case secrecy rate maximization (WC-SRM) problem via semidefinite program (SDP). stochastic propose suboptimal solution to outage probability constrained (OP-SRM)...
In this paper, the probability distribution of peak to average power ratio (PAPR) is analyzed for mixed numerologies transmission based on orthogonal frequency division multiplexing (OFDM). State art theoretical analysis implicitly assumes continuous and symmetric spectrum OFDM signals. Thus, it difficult be applied mixed-numerology system due its complication. By comprehensively considering parameters, including numerology, bandwidth level each subband, we propose a generic analytical...
Iterative clipping and filtering (ICF) is a straight-forward method for reducing the peak-to-average power ratio (PAPR) of signals in orthogonal frequency-division multiplexing (OFDM) system. Recently, convex optimization has been used to find optimal filter coefficients that minimize error vector magnitude (EVM) meet PAPR constraint. However, high-computation complexity may be incurred when solving problem. Therefore, we develop an efficient reduction uses time-domain kernel matrix generate...
Abstract We present a method that can automatically determine the optimal camera exposure time for high-quality deformation measurement with digital image correlation (DIC) techniques. The proposed needs to capture series of surface images test sample at its reference state different times. relationship between mean intensity gradients (MIGs) and average grayscales these reveals best quality (i.e. maximum MIG) speckled always corresponds certain grayscale. Thus, serve two purposes in DIC...
To compare the biomechanical responses of a normal mandible to an osteoporotic with two-implant-supported magnetic attachments.
In this paper, Fe−8.5Mn−1.5Al light−weight medium Mn steel is used as the research object, and hot compression test conducted by Gleeble−3500 thermal simulation tester. The dynamic reversion recrystallization (DRX) processes are analyzed according to true stress−strain curve; θ−σ work−hardening rate curve plotted P−J double differential method analyze influence law between softening effect of material; DRX critical strain model established deformation parameters on DRX; Based material...