Article
Engineering, Electrical & Electronic
Luyao Huang, Yongxin Xu, Wenqing Jiang, Lei Xue, Weisheng Hu, Lilin Yi
Summary: This paper develops a 50 Gb/s/lambda passive optical network (PON) for mobile xhaul applications in order to accommodate the exponential growth of network services in the 5G and beyond wireless system. The study compares different equalizers in terms of performance, complexity, optimization difficulty, and generalization ability, and finds that the Volterra DFE equalizer is the most efficient option. It enables C-band 50 Gb/s PAM-4 signal transmission in a 10G optics based IMDD system with a 3 dB bandwidth of 6.11 GHz and a power budget up to 38 dB.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Noriaki Kaneda, Chun-Yen Chuang, Ziyi Zhu, Amitkumar Mahadevan, Bob Farah, Keren Bergman, Doutje Van Veen, Vincent Houtsma
Summary: This article proposes a deep neural network based equalizer to tackle the intersymbol interference in high speed passive optical network (PON) links. The performance of the DNN based equalizer is found to be superior to the conventional equalizer in both back-back and through fiber experiments. To reduce hardware complexity, the article investigates embedded parallelization and classification output stage, and analyzes the impact of fixed-point resolution on hardware resource utilization.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Robert Borkowski, Michael Straub, Yanni Ou, Yannick Lefevre, Zeljko L. Jelic, Wouter Lanneer, Noriaki Kaneda, Amitkumar Mahadevan, Volker Hueckstaedt, Dora van Veen, Vincent Houtsma, Werner Coomans, Rene Bonk, Jochen Maes
Summary: FLCS-PON is a flexible-rate passive optical network that can achieve high bitrates and optimize transmission methods based on user channel conditions. By incorporating new techniques and components, it is capable of more than doubling the throughput increase compared to the upcoming 50 Gbit/s PON, while still supporting a full array of deployed fiber edge cases.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Telecommunications
Alvis Logins, Jiale He, Kirill Paramonov
Summary: This letter discusses the equalization of an optical signal under the Orthogonal Frequency Division Multiplexing modulation scheme, addressing the nonlinear effects caused by a power amplifier (PA) and a transimpedance amplifier (TIA). Comparisons are made between the Convolutional Neural Network (CNN) and the Wiener-Hammerstein (WH) linearization models, using multiple PA and TIA devices. The study finds that combining CNN with linear equalization leads to a significant improvement in effectiveness. Furthermore, a new block-structured CNN-based solution is developed, incorporating the optimal sequence and providing up to a 2.88 dB Q-factor gain over the traditional WH approach.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Xuan Zhang, Ning Ning
Summary: This study proposes and demonstrates an online PON monitoring scheme that achieves fault detection and localization. It utilizes fiber Bragg gratings with different central reflection wavelengths for fault detection and adds an additional module with unmodulated broadband light sources for fault localization.
IEEE PHOTONICS JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Siddharth Varughese, Alirio Melgar, Varghese A. Thomas, Pavel Zivny, Shane Hazzard, Stephen E. Ralph
Summary: TDECQ outperforms eye mask and TDP methodologies in evaluating PAM-4 transmitters, and using machine learning techniques can significantly enhance assessment speed while maintaining accuracy.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Moshe Tzur, Gil Paryanti, Dan Sadot
Summary: This study proposes an improved neural network-based direct learning approach for digital pre-distortion applications. The method utilizes curriculum learning to gradually increase the complexity of the training paradigm based on the statistical properties of the input signal, resulting in better convergence of the network.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2022)
Article
Computer Science, Hardware & Architecture
Jialiang Jin, Dezhi Zhang, Qizheng Li, Mingbo He, Yuanfeng Mao, Qihong Wu, Zeru Wu, Xu Wang, Zhen Dong, Yanbo Li, Zhicheng Ye, Jian Jian
Summary: This paper proposes an on-board integrated optics (OBO) scheme within a 50G/10G combo PON system, which achieves high port density, low cost, and low power consumption required for the 50G PON system. The OBO scheme integrates record-high power DFB lasers, low insertion loss silicon modulators, a planar lightwave circuit wavelength-division multiplexer, and avalanche photodiodes on a single board, solving key issues faced by the coexistence and smooth evolution from 10G to 50G PON.
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING
(2023)
Article
Computer Science, Hardware & Architecture
Mariacristina Casasco, Giuseppe Caruso, Ivan N. Cano, Derek Nesset, Maurizio Valvo, Valter Ferrero, Roberto Gaudino
Summary: This paper analyzes the metrology of transmitter and dispersion eye closure (TDEC) in a 50G passive optical network (50G-PON) for evaluating transmitter quality. The theoretical evaluation for adapting TDEC to 50G-PON is presented, along with optimization of parameters for numerical evaluation and guidelines for implementation. The measurement of TDEC is demonstrated using both sampling and real-time oscilloscopes, with a comparison of noiseless and noise-enhanced techniques for computing equalizer coefficients. Experimental comparisons between different transmitters show that TDEC can effectively predict receiver sensitivity penalty.
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING
(2023)
Article
Computer Science, Information Systems
Jongwan Kim, Hoon Kim
Summary: This study investigates the minimum length of pseudorandom binary sequence (PRBS) required to train artificial neural networks (ANN) to avoid overfitting. The findings are confirmed through theoretical analysis and numerical simulation.
Article
Engineering, Electrical & Electronic
Sang-Yuep Kim, Takahiro Suzuki, Jun-Ichi Kani, Tomoaki Yoshida
Summary: The proposed carrier phase recovery algorithm enables the software-driven optical coherent receivers and shows high performance in real-time streaming. This enhancement of disaggregated optical coherent receivers will significantly improve system flexibility and scalability.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Luyao Huang, Wenqing Jiang, Yongxing Xu, Weisheng Hu, Lilin Yi
Summary: This paper presents a novel low-complexity Volterra-inspired neural network (VINN) equalizer, which outperforms traditional Volterra nonlinear equalizer (VNLE) technology in terms of system simplicity and performance. The effectiveness of the proposed equalizer is verified through implementation in a 1310 nm band-limited IMDD PON system.
Article
Engineering, Electrical & Electronic
Istvan Bence Kovacs, Saifuddin Faruk, Seb J. Savory
Summary: We experimentally demonstrate a 200 Gb/s/lambda upstream coherent passive optical network (PON) using polarization division multiplexed (PDM) pulse amplitude modulation 4-level (PAM4) signal with coherent detection. The PDM-PAM4 signal is generated using a low cost C-band electro-absorption modulated laser (EML), polarization division multiplexing (PDM) emulator, and semiconductor optical amplifier (SOA). A power budget of 29.4 dB is achieved for 25 km single mode fiber (SMF) transmission using a class-40 integrated coherent receiver (ICR) at the optical line terminal (OLT).
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Jiajun Zhou, Lin Gan, Chen Chen, Songnian Fu, Ming Tang, Qi Yang, Deming Liu
Summary: The paper demonstrates DSP-free PAM-4 transmission in WDM-PON and optimizes parameters through LO signal diversity scheme to enhance power budget and achieve high receiver sensitivity. After transmission over SSMF, a power budget of 29 dB is achieved for 8 wavelength channels.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Z. Q. Zhong, W. Jin, S. Jiang, J. X. He, D. Chang, Y. H. Hong, R. P. Giddings, X. Q. Jin, M. O'Sullivan, T. Durrant, J. Trewern, G. Mariani, J. M. Tang
Summary: This study proposes a new concurrent inter-ONU and upstream communication technique, which is experimentally demonstrated on high-speed PON systems, showing effectiveness in improving signal transmission capacity and reducing power penalties.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Computer Science, Artificial Intelligence
Shixu Sun, Xiaofeng Hu, Yingchao Liu
Summary: Detecting and responding to tool breakage in manufacturing procedures is crucial to prevent damage. Limited failure samples pose challenges to detection, which the proposed method addresses through balanced data distribution using an adversarial generative oversampling model based on GAN. This approach significantly improves breakage detection accuracy compared to existing methods.
JOURNAL OF INTELLIGENT MANUFACTURING
(2022)
Article
Chemistry, Multidisciplinary
Cui Wang, Fan Yi, Runhao Li, Xiao-Cui Liang, Qiang He, Xuehong Min, Xiaoyun Hu, Yue Sun
Summary: A simple strategy of combining pillar[5]arene (P5) and MXene was used to prepare functional two-dimensional materials. The resulting MXene-P5 showed high supramolecular recognition, enrichment capability, and electrochemical response towards dye molecules, possibly due to the synergistic effects of high conductivity, high surface area, and host-guest recognition. This study provides a promising prospect for an electrochemical sensing platform based on different types of pillararenes.
CHEMICAL COMMUNICATIONS
(2022)
Article
Automation & Control Systems
Yingchao Liu, Jian Zhang, Xiaofeng Hu, Shixu Sun
Summary: The paper proposes a sensor data anomaly detection and correction method, consisting of data preprocessing, abnormal data detection, correction, and tool life prediction. It significantly improves the accuracy of cutting tool life prediction.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Chemical
Xiaopeng Hu, Shuai Zhong, Gang Peng
Summary: The bond behavior between early-age concrete and deformed steel bars under unidirectional cyclic loading was investigated through pull-out tests. The results showed that unidirectional cyclic loading affected the bond performance, resulting in irreversible residual deformation. The bond energy increased with the strength grade and concrete age.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2023)
Editorial Material
Cell Biology
Enlin Chen, Zhe Chen, Linxi Chen, Xiaoling Hu
Summary: Mitochondria play a crucial role in regulating intracellular metabolism and intercellular transfer, affecting neighboring cells. Platelets can communicate with MSCs through mitochondrial exchange, enhancing wound healing capabilities.
Article
Engineering, Electrical & Electronic
Xiaolin Tang, Jiaxin Chen, Kai Yang, Mitsuru Toyoda, Teng Liu, Xiaosong Hu
Summary: Practical vision-based technology is crucial for the autonomous driving of intelligent hybrid electric vehicles. This article proposes a hierarchical control structure that combines YOLO-based object detection and deep reinforcement learning-based intelligent control. Experimental results show that the hierarchical control structure achieves considerable computing efficiency on embedded devices while maintaining a safe following distance and achieving fuel economy.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2022)
Article
Pharmacology & Pharmacy
Huanhuan Wang, Teng Wang, Xiaoyun Hu, Chenhui Deng, Ji Jiang, Hanyu Qin, Kai Dong, Shuai Chen, Chunyan Jin, Qian Zhao, Bin Du, Pei Hu
Summary: The study developed a PopPK model using NLME approach to assess the appropriateness of body weight or fixed dosing regimen for kukoamine B in sepsis patients. Simulations showed that fixed dosing regimen can substitute for body weight dosing regimen, with lower PK variability. Based on the results, a fixed dosing regimen was recommended for subsequent clinical trials.
BRITISH JOURNAL OF CLINICAL PHARMACOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Wei Li, Yi Xie, Xiaosong Hu, Yangjun Zhang, Huihui Li, Xianke Lin
Summary: An SOC-SOTD joint estimation algorithm is proposed for a pouch lithium-ion battery, which accurately estimates the temperature distribution and corrects the SOC and average internal temperature.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Chemistry, Physical
Zhongwei Deng, Xianke Lin, Jianwei Cai, Xiaosong Hu
Summary: Battery health monitoring is crucial for the maintenance and safety of electric vehicles. This paper proposes a method that utilizes early aging data of batteries to recognize degradation patterns and apply transfer learning for accurate state of health (SOH) estimation. The study demonstrates the effectiveness of using features extracted from battery discharge capacity curves and compares the performance of different machine learning algorithms, with Long short-term memory (LSTM) network achieving the best estimation accuracy. The proposed recognition and transfer learning methods further improve the estimation accuracy with mean absolute errors (MAE) and root mean square errors (RMSE) averaging at only 0.94% and 1.13%.
JOURNAL OF POWER SOURCES
(2022)
Article
Multidisciplinary Sciences
Michael Pamonag, Abigail Hinson, Elisha J. Burton, Nojan Jafari, Dominic Sales, Sarah Babcock, Rozlan Basha, Xiaofeng Hu, Kristopher E. Kubow
Summary: Directed cell migration is influenced by microenvironmental cues and cells' ability to modify their surroundings. This bi-directional relationship plays a fundamental role in cell migration in fibrillar environments.
Article
Environmental Sciences
Shujia Zhang, Chunyan Wang, Yijia Xie, Rongfan Chen, Mengyuan Huang, Xiaoling Hu, Bin Wang, Wenbin Guo, Haiyun Huang, Rongrong Wang, Dao Zhou, Hongyu Wang
Summary: In this study, bioaugmentation using denitrifying strains isolated from mature AGS was found to be an effective strategy for enhancing aerobic granulation and denitrification. Mycobacterium senegalense X3-1 exhibited the strongest self-aggregation ability and good denitrification ability, making it a potential strain for AGS formation and denitrification.
Article
Automation & Control Systems
Xiaoyan Hu, Yuan-Xin Li, Shaocheng Tong, Zhongsheng Hou
Summary: This article addresses the fixed-time prescribed event-triggered adaptive asymptotic tracking control problem for nonlinear pure-feedback systems with uncertain disturbances. By introducing the fuzzy-logic system (FLS), it deals with the unknown nonlinear functions in the system. It proposes a new type of Lyapunov function and fixed-time performance function (FPF), which achieve the fixed-time prescribed performance (FPP) and bounded signals of the system while avoiding Zeno behavior.
IEEE TRANSACTIONS ON CYBERNETICS
(2023)
Article
Chemistry, Multidisciplinary
Zeai Huang, Jundao Wu, Minzhi Ma, Junbu Wang, Shuqi Wu, Xiaoyun Hu, Chengdong Yuan, Ying Zhou
Summary: This study reported the use of BiOCl nanosheets loaded with noble metals for photocatalytic CO2 reduction. Pd-loaded BiOCl showed the highest activity and selectivity for CH4 formation. The improved performance was attributed to enhanced charge separation efficiency and the formation of key intermediates during CH4 formation. The findings provide a facile and efficient way to achieve selective CH4 formation via photocatalytic CO2 reduction.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xuemei Tian, Hanliu Wu, Xiaoyan Hu, Zhonghua Wang, Chunguang Ren, Zhengjun Cheng, Lin Dou, Ying-Wu Lin
Summary: Photocatalytic activity of the ZnO/AgCl composites prepared by ball-milling method was examined under visible light irradiation. The BM-ZA composites exhibited significantly higher photocatalytic efficiency in the degradation of RhB and the dehydrogenation of 1,4-DHP compared to ZnO and AgCl alone, which can be attributed to the formation of a heterojunction between ZnO and AgCl.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Automation & Control Systems
Arash Khalatbarisoltani, Mohsen Kandidayeni, Loic Boulon, Xiaosong Hu
Summary: This article discusses the importance of modular powertrains in future hybrid fuel cell vehicles, proposes two decentralized convex optimization frameworks for solving power allocation strategy problems, and validates the effectiveness of these algorithms through numerical simulations and experiments.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)