A5100415566- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Optical Network Technologies
- Millimeter-Wave Propagation and Modeling
- Image and Signal Denoising Methods
- Advanced Data Compression Techniques
- Microwave Engineering and Waveguides
- Advanced Sensor and Control Systems
- Full-Duplex Wireless Communications
- Radar Systems and Signal Processing
- Optical Wireless Communication Technologies
- Advanced SAR Imaging Techniques
- Advanced Algorithms and Applications
- Industrial Technology and Control Systems
- Optical Systems and Laser Technology
- Semiconductor Lasers and Optical Devices
- Radio Frequency Integrated Circuit Design
- Advanced Adaptive Filtering Techniques
- Telecommunications and Broadcasting Technologies
- Digital Filter Design and Implementation
- Advanced Optical Network Technologies
- Wireless Communication Security Techniques
- Power Systems and Technologies
- Terahertz technology and applications
- Image Retrieval and Classification Techniques
Fudan University
2013-2025
State Key Laboratory of ASIC and System
2022-2025
Inner Mongolia Agricultural University
2024
Nankai University
2022-2024
Jilin Agricultural University
2021-2024
Guangzhou University
2024
Lanzhou University Second Hospital
2023
Lanzhou University
2023
China Academy of Space Technology
2022
Huadong Hospital
2021
This paper presents a shape-adaptive wavelet coding technique for arbitrarily shaped still texture. includes discrete transforms (SA-DWTs) and extensions of zerotree entropy (ZTE) embedded (EZW) coding. Shape-adaptive is needed efficiently visual objects, which essential object-oriented multimedia applications. The challenge to achieve high efficiency while satisfying the functionality representing One features SA-DWTs that number coefficients after identical pixels in original object....
We provided a feasible solution for 800-Gb/s per carrier long-distance wavelength division multiplexing (WDM) coherent optical fibre transmission based on offline DSP. experimentally demonstrate 5-carrier 125-GHz-spacing WDM achieving 2000-km distance and net bit rate carrier. utilized 100-Gbaud truncated probabilistically shaped (TPS) polarization-multiplexed 64QAM format in this work. In terms of advanced components, the high-speed digital-to-analog converter with 35-GHz 3 dB-bandwidth...
Terahertz band (0.1 to 10 THz) with high carrier frequency and large available bandwidth has become a promising candidate meet the 100 Gbit/s or even 1 Tbit/s data rate required by future six-generation (6G) mobile communication networks. Compared all-electrical methods generate terahertz signals, photon-assisted technology can break bottleneck of limit electronics devices, signal frequency, bandwidth, flexible tunability easy integration capacity fiber link. In this paper, we introduce...
Integrating sensing function is becoming a key feature in the sixth generation (6G) radio access network. In this paper, we proposed and experimentally demonstrated novel method that integrates high-resolution radar long-distance communication terahertz (THz) band. The THz linear frequency modulation (LFM) signals were simultaneously generated with aid of photonics technology. To support communication, pair special lenses was utilized. A net rate 38.1 Gbit/s achieved after 50 m wireless...
We proposed and established a large-capacity, long-distance wireless millimeter-wave (mm-wave) signal delivery system at W-band based on photonics-aided mm-wave generation technology, polarization-division-multiplexing (PDM), advanced devices. demonstrated the transmission of 10-Gbaud PDM-QPSK, PDM-16QAM, PDM-PS-64QAM signals in up to 4.6-km, respectively. The multiple-input multiple-output (MIMO) Volterra equalizer (VE) is employed during Rx offline digital processing (DSP) compensate for...
In this article, we have experimentally demonstrated a fiber-wireless-integration <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$D$ </tex-math></inline-formula> -band (110–170 GHz) transmission system. To extend the wireless distance while maintaining bit rate as high possible, designed high-gain lens horn antenna modules consisting of pair dielectric plano-convex lenses and antennas for long-haul links....
Terahertz (THz) photonics technique can break through the bandwidth limitation of electronic mixing method and be seamless integrated with optical access networks, which has bright prospects in future 6G broadband communication. However, due to bottleneck photoelectric conversion efficiency uni-travelling photodiode (UTC-PD), power generated THz-wave signal is usually only microwatt level, wireless transmission distance short. In this paper, we summarize key techniques use extend range for...
The radio-over-fiber (RoF) orthogonal frequency division multiplexing (OFDM) system at Terahertz (THz) band has been a promising solution to meet the demand for high capacity and flexibility. signals transmitted in RoF will suffer severe impairments caused by wireless multi-path effect, optical fiber transmission, photoelectric device response. time-frequency domain equalization (TFDE) based on two-dimension convolution (Conv2D) neural network (NN) is proposed resist linear nonlinear of...
Photonics technology is a promising way to generate high-frequency millimeter waves, which also key realize the convergence of fiber-optic and wireless communication. To meet actual application requirements, kilometer-level distance, large-capacity, high-spectral-efficiency systems are urgent requirements. Based on photonics-aided system at W band, we achieve net rate 47.45-Gb/s signal delivery over 10-km single-mode fiber-28 (SMF-28) 4.6-km free-space link. The spectral efficiency 4.97...
Orthogonal frequency division multiplexing (OFDM) is a promising solution in photonics-aided millimeter-wave (MMW) communication systems, which combine the features of fiber and wireless links. In such fiber-wireless system, broadband OFDM signals could be affected by multipath effect, chromatic dispersion, synchronization error, other complex impairments. Therefore, both inter-symbol interference (ISI) inter-carrier (ICI) will cause performance degradation. this experiment, D-band MMW...
We experimentally demonstrate 16-GBaud probabilistic shaped 256-ary quadrature amplitude modulationsignal transmission over 104-m wireless distance at 339 GHz in a photonics-aided terahertz (THz)-wave communication system. Thanks to the pair of poly tetra fluoroethylene lenses and PS technique, we successfully achieve record single line rate 124.8 Gbit/s net spectral efficiency 6.2 bit/s/Hz. To best our current knowledge, it is first time >100 m single-carrier 256QAM THz-wave signal delivery.
In this Letter, we propose the application of delta-sigma modulation (DSM) higher-order quadrature amplitude (QAM) technology in long-distance transmission W-band wireless communication, and demonstrate, for first time to best our knowledge, millimeter wave signals based on 1-bit DSM quantization using polarization-division-multiplexed orthogonal frequency division multiplexing (PDM-OFDM) 1024QAM/4096QAM 4.6 km. We successfully achieved a bit error rate (BER) 40-Gbit/s PDM-OFDM 1024QAM...
We have implemented a large-capacity, long-haul, and high spectral efficiency photonics-based polarization multiplexing communication system at W-band. The signal delivery up to 119.1 Gb/s with of 9.9 bit/s/Hz is achieved over 10 km optic-fiber link 4600 m wireless link. In our study, we utilize an orthogonal frequency division (OFDM) scheme compensate for the impairments caused by dispersion effect multipath effect. Based on pair antennas, antenna technique used realize...
We propose a digital-delta-sigma-modulation radio-over-fiber (DDSM-RoF) scheme for wireless fronthaul and validate it experimentally in D-band photonics-aided RoF transmission system. The 10-Gbaud DDSM-RoF signal with common public radio interface equivalent data rate (CPRI-EDR) of 55.8 Gb/s is successfully transmitted 130-GHz 4.6-km channel. spectral efficiency (SE) 5.58 bit/s/Hz the capacity-distance product reaches 257 Gb/s·km. Up to 34.4-dB recovered signal-to-noise ratio (SNR) observed...
The urgent demand for high-bandwidth wireless services in enhanced mobile broadband networks needs innovative solutions front-haul systems. terahertz (THz) band offers a promising candidate ultrahigh-capacity data transmission. This study investigates the integration of photonics-aided THz signal generation with MIMO and PDM technologies. We proposed novel, to best our knowledge, space–time domain equalization algorithm based on MIMO-complex-valued neural (CVNN), which can preserve phase...
In order to achieve water conservation and salt control in saline irrigation areas improve the soil ecological environment of farmland areas, this study carried out a field trial 2020–2021 on edible sunflowers planted subsurface Hetao Irrigation District. Three level treatments setup under drainage were compared. The was with no local conventional levels (the spring amount is 240 mm bud stage 90 mm, CK); three W1), medium 120 W2), low there stage, W3). results showed that desalinization best...
A photonics-aided dual-functional system that can simultaneously implement high-speed communication and high-resolution radar detection is proposed. In the proposed system, orthogonal frequency division multiplexing signals broadband linear modulated are realized based on photonic heterodyning. Based this a net rate of 46.55 Gbit/s with 15 GHz bandwidth in W-band were achieved.
An experimental demonstration of the ultra-large-capacity terahertz (THz)-wave signal transmission over a 20-km wired and 54-m wireless distance in an 80-channel wavelength division multiplexing (WDM) system is successfully realized for first time, to best our knowledge. Based on optical asymmetric single-sideband (ASSB) modulation advanced digital processing (DSP) algorithms, we achieve record line rate 6.4 Tbit/s (net 5.12 Tbit/s) THz-over-fiber communication system. This can provide...
Based on a photonics-aided scheme, we achieve an experimental demonstration of a, to the best our knowledge, record-breaking 200-m terahertz (THz)-wave wireless delivery at 335 GHz with aid pair high-gain polytetrafluoroethylene (PTFE) lenses. By using 10-GBaud probabilistically shaped 64-ary quadrature amplitude modulation (PS-64QAM) signal and advanced digital processing (DSP) including likelihood-based selection radius-directed equalizer (LBS-RDE), single-carrier net bit rate reaches 44...
We propose a multi-order digital-analog radio-over-fiber (DA-RoF) scheme with different quantization factors at each stage and verify it experimentally in D-band photonics-aided RoF transmission system. The 10-Gbaud DA-RoF signal common public radio interface equivalent data rate (CPRI-EDR) of 78.13 Gb/s/λ is successfully transmitted 130-GHz 4.6-km wireless link. calculated capacity-distance product 359.4 Gb/s/λ·km spectral efficiency (SE) 7.81 bit/s/Hz. Results show that the 4-order...
We propose a digital-differential-pulse-code-modulation fronthaul (DDP-FH) scheme and conduct experimental validation within photonics-aided D-band 1.2-km wireless system. In the experiment, by adopting different resolutions in differential-pulse-code-modulation (DPCM), recovered signal-to-noise ratio (SNR) can be flexibly adjusted wide range from 19.1 dB to 38.9 dB, supporting transmission of various formats 64-quadrature-amplitude-modulation (64-QAM) 4096-QAM. When resolution DPCM...
Current popular Large Vision-Language Models (LVLMs) are suffering from Hallucinations on Object Attributes (HoOA), leading to incorrect determination of fine-grained attributes in the input images. Leveraging significant advancements 3D generation a single image, this paper proposes novel method mitigate HoOA LVLMs. This utilizes multiview images sampled generated representations as visual prompts for LVLMs, thereby providing more information other viewpoints. Furthermore, we observe order...