Article
Optics
Sunan Yao, Huaqing Chai, Lei Lei, Zihe Zhu, Guoqiang Li, Wenliang Wang
Summary: This study designs micro-LED arrays with different array numbers for high-speed visible light communication and lighting. The 2 x 2 array micro-LEDs exhibit a high modulation bandwidth of approximately 785 MHz at higher injection current, with a light output power over 7 mW, making them more suitable for visible light communication in free space.
Article
Optics
Jianyang Shi, Zengyi Xu, Wenqing Niu, Dong Li, Xiaoming Wu, Ziwei Li, Junwen Zhang, Chao Shen, Guangxu Wang, Xiaolan Wang, Jianli Zhang, Fengyi Jiang, Shaohua Yu, Nan Chi
Summary: This paper proposes and fabricates a vertical-structure micro-LED-based photodetector on a Si substrate for visible light communication (VLC) in 6G. The photoelectrical performance and communication performance of three different sizes of the photodetector are compared. The experimental results demonstrate that the proposed photodetector can achieve a data rate of over 10 Gbps using specific modulation and pre-equalization algorithms.
PHOTONICS RESEARCH
(2022)
Article
Optics
N. Aravindan, A. Sivanantha Raja, S. Selvendran, M. Balasubramonian, K. Esakki Muthu
Summary: This research establishes a VLC system using a single phosphorescent white LED, achieving data transmission rates of up to 1.3 Gbps and below the bit error rate limit by employing a pre-equalization circuit. The study demonstrates the potential of this system for low-cost and indoor wireless broadband access applications through an assessment on the characteristics of an equalizer.
Article
Telecommunications
Hao Zhang, Shancheng Zhao, Duoying Zhang
Summary: This paper introduces a method of using bulbs for communication and illumination in visible light communications, and proposes an efficient dimmable pulse amplitude modulation (PAM) scheme based on constant sum codes. Numerical results show the advantages of the proposed scheme in terms of spectral efficiency and performance.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Dayu Shi, Xun Zhang, Ziqi Liu, Xuanbang Chen, Xiaodong Liu, Jintao Wang, Jian Song, Andrei Vladimirescu
Summary: This article presents a physics-based compact model for gallium nitride multiple quantum well light-emitting diodes (LEDs) tailored for visible light communication (VLC) systems. The model takes into account the internal physical mechanisms and predicts the illumination and communication performance of the LED in VLC systems. The accuracy of the model is validated experimentally in a complete VLC transmission system.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Electrical & Electronic
Kareem Mostafa Matter, Heba A. Fayed, Ahmed Abd El-Aziz, Moustafa H. Aly
Summary: Due to the growth of mobile devices and wireless services, there is a high demand for radio frequency. This paper proposes a visible light communication system that decreases the bit error rate (BER) by applying a hexagonal LED distribution and using different techniques.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Yu Mu, Chao Wang, Xiao-xiao Du, Yi-jun Zhu
Summary: This paper explores the mutual restrictions of optical, electrical, and thermal mechanisms in LED systems, establishes a dynamic model, and presents the optimal bias current to maximize communication performance without sacrificing light flux.
IEEE PHOTONICS JOURNAL
(2021)
Review
Engineering, Electrical & Electronic
Lucas Teixeira, Felipe Loose, J. Marcos Alonso, Carlos Henrique Barriquello, Vitalio Alfonso Reguera, Marco Antonio Dalla Costa
Summary: This article presents a survey on LED drivers for visible light communication. By systematizing the most relevant published research, the modulator circuits are classified into four types. Based on reference values of power, efficiency, and data rate, it is concluded that linear mode modulators (LMMs) have the highest number of publications, while switching mode modulators (SMMs) are the recent trend.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2022)
Article
Automation & Control Systems
R. Priyadharsini, A. Kunthavai
Summary: Magnetic Resonance Imaging (MRI) scanners use radio waves and strong magnetic fields to detect tumors and wounds, and visualize detailed images of the human body. However, Wi-Fi and other medical devices in the MRI procedure room produce RF noise that interferes with the MRI scanner's operation. This paper proposes the use of Visible Light Communication (VLC) to avoid RF interference and enhance the distance between the VLC transmitter and receiver.
INTELLIGENT AUTOMATION AND SOFT COMPUTING
(2023)
Article
Chemistry, Analytical
Ismael Soto, Raul Zamorano-Illanes, Raimundo Becerra, Pablo Palacios Jativa, Cesar A. Azurdia-Meza, Wilson Alavia, Veronica Garcia, Muhammad Ijaz, David Zabala-Blanco
Summary: This article proposes a novel method for detecting COVID-19 in an underground channel using VLC and ML. The mathematical models of COVID-19 DNA gene transfer in regular square constellations using a CSK/QAM-based VLC system are presented. ML algorithms are utilized to classify the bands in electrophoresis samples to search for the optimal model. Results show that the square constellation N = 2(2i )x 2(2i), (i = 3) yields the highest profit and XGBoost achieves the best accuracy of 96.03% and a recall of 99% for positive values among all the models tested.
Article
Engineering, Electrical & Electronic
Luhing Hu, Jaeyong Choi, Sumin Hwangbo, Do-Hoon Kwon, Bongkyun Jang, Seunghyeon Ji, Jae-Hyun Kim, Sang-Kook Han, Jong-Hyun Ahn
Summary: A flexible full-color micro-LED display with high mechanical robustness was fabricated by printing quantum dots on a blue micro-LED array. The display exhibits better color gamut and enhanced light conversion efficiency. It can be mounted on various unusual substrates and used for high-speed wireless visible light communication.
NPJ FLEXIBLE ELECTRONICS
(2022)
Article
Chemistry, Analytical
Pau Salvador, Vicenc Almenar, Juan Luis Corral, Javier Valls, Maria Jose Canet
Summary: LED lighting is widely used for illumination due to its energy efficiency. Recently, there has been increasing interest in using LEDs for data transmission in communication systems. This paper presents a simulation model and characterization method for visible light communications (VLC) using phosphor-based white LEDs. The simulation model considers factors such as LED frequency response, noise levels, propagation channel attenuation, and angular misalignment between the lighting source and photoreceiver.
Article
Engineering, Electrical & Electronic
Zahraa Mustafa Zaidan, Oguz Bayat, Ayad Atiyah Abdulkafi
Summary: This paper proposes a new DC-PAM-OFDM method to improve the spectral efficiency of visible light communication (VLC) systems. Compared to traditional methods, this method does not use Hermitian symmetry and can achieve a 100% increase in spectral efficiency. It is also more energy efficient compared to PAM-DMT and has better bit error rate performance and lower peak-to-average power ratio under the same spectral efficiency conditions.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Wenqing Niu, Zengyi Xu, Weihuang Xiao, Yu Liu, Fangchen Hu, Guangxu Wang, Jianli Zhang, Zhixue He, Shaohua Yu, Jianyang Shi, Nan Chi
Summary: This paper introduces a VLC system based on LEDs, which can provide both illumination and wireless communication simultaneously. By utilizing specific LEDs and a precoding scheme, the experimental results show that the system has good interference cancellation performance and high data transmission rate.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Yun-Han Chang, Yu-Ming Huang, Wahyu Hendra Gunawan, Guan-Hao Chang, Fang-Jyun Liou, Chi-Wai Chow, Hao-Chung Kuo, Yang Liu, Chien-Hung Yeh
Summary: This study demonstrates a record 4.343 Gbit/s green color micro-LED based visible-light communication technology. By growing the micro-LED on a semipolar orientation, a higher modulation bandwidth was achieved at a lower current density, leading to improved communication efficiency.
IEEE PHOTONICS JOURNAL
(2021)
Article
Chemistry, Physical
Muhammad Irfan, Luqman Ali Shah, Abbas Khan, Muhammad Farooq, Mohib Ullah, Muhammad Ismail
Summary: With the rapid development in various fields, the demand for hydrogels with specific properties is increasing. In this study, a flexible zwitterionic hydrogel was synthesized and its properties were tested using a rheometer. The hydrogel showed pH sensitivity and rheological properties, making it suitable for applications in industries such as painting and cosmetics.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
Muhammad Irfan, Muhammad Aslam, Zulfiqar Ali Raza
Summary: In this study, a PVA-PPy-Bi2O3 nanocomposite was fabricated using the solution casting method. The mass attenuation coefficients of the composite were significantly enhanced by increasing the Bi2O3 nanoparticle content, leading to improved gamma irradiation shielding properties.
Article
Environmental Sciences
Imran Ali Baig, Muhammad Irfan, Md Abdus Salam, Cem Isik
Summary: This study investigates the key determinants of food grain yield in India, focusing on the impacts of climate change and agricultural subsidy. The results indicate that rainfall has a positive impact on grain yield, while temperature and carbon emissions have a negative effect. Non-climatic factors such as capital formation and fertilizer usage also contribute positively to grain yield, while crop area, agricultural subsidy, and employment have negative effects. The findings suggest the importance of technological innovation and precision agriculture in increasing agriculture production and productivity, as well as the need for policies addressing climate change and promoting eco-friendly renewable energy.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Shahid Ali, Qingyou Yan, Asif Razzaq, Irfan Khan, Muhammad Irfan
Summary: Adopting biogas technology in a developing country like Pakistan is a complex process. The government has taken steps to address energy issues by increasing biogas facilities and identifying barriers to the deployment of biogas plants. Study results suggest that reducing economic and governmental barriers and encouraging farmers to effectively use biogas plants are crucial for promoting the implementation of biogas technology.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Automation & Control Systems
Abdullah A. Asiri, Bilal Khan, Fazal Muhammad, Shams ur Rahman, Hassan A. Alshamrani, Khalaf A. Alshamrani, Muhammad Irfan, Fawaz F. Alqhtani
Summary: Recent technological advancements in the medical profession have played a crucial role in the early detection and categorization of diseases that cause mortality. This study analyzed and tested several machine learning algorithms, finding that Support Vector Machine (SVM) outperformed others in terms of classification accuracy.
INTELLIGENT AUTOMATION AND SOFT COMPUTING
(2023)
Article
Computer Science, Information Systems
Muhammad Irfan, Khan Muhammad, Muhammad Sajjad, Khalid Mahmood Malik, Faouzi Alaya Cheikh, Joel J. P. C. Rodrigues, Victor Hugo C. de Albuquerque
Summary: This article discusses the significant bandwidth consumption of immersive videos in industry 4.0 and proposes a solution using convolutional neural networks to select the user's region of interest and reduce bandwidth usage.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Automation & Control Systems
Adam Glowacz
Summary: In this paper, the author proposes a fault diagnosis technique for thermal images analysis of commutator motors (CMs) and single-phase induction motors (SIMs). Original feature extraction methods, including DAMOM, DAM20HP, DAMMH, and IB, were used, and the feature vectors were classified using the Nearest Neighbor classifier and Long short-term memory (LSTM). The proposed analysis was successful, achieving high recognition efficiency for both CMs and SIMs. The study presents an innovative perspective on the development of thermal imaging diagnostics and provides valuable insights into thermographic diagnostics of electrical motors.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Biochemistry & Molecular Biology
Taghreed N. Almanaa, Ayman Mubarak, Muhammad Sajjad, Asad Ullah, Muhammad Hassan, Yasir Waheed, Muhammad Irfan, Saifullah Khan, Sajjad Ahmad
Summary: Hantavirus, a member of the Bunyavirales order, is an emerging global pathogen that has affected millions of people worldwide. A potential multi-epitopes-based vaccine against hantavirus was designed using T-cell epitope prediction and immunoinformatics analysis. The vaccine's binding potential with TLR-3 immune receptor was evaluated, and docking studies revealed promising interactions. The findings suggest that the designed vaccine could be a potential candidate for protection against hantavirus.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Biochemistry & Molecular Biology
Asad Ullah, Mahboob ul Haq, Madiha Iqbal, Muhammad Irfan, Saifullah Khan, Riaz Muhammad, Amin Ullah, Muhammad Khurram, Metab Alharbi, Abdullah F. F. Alasmari, Sajjad Ahmad
Summary: Moraxella lacunata is an emerging gram-negative bacterium responsible for multiple nosocomial infections. A multi-epitope-based vaccine has been designed for M. lacunata using fusion of selected epitopes and cholera toxin-B adjuvant. Docking analysis and molecular dynamics simulation showed strong interactions and stable binding conformation between the vaccine and immune cell receptors. Theoretical binding free energies were estimated using MM-PBSA and MM-GBSA methods.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2023)
Article
Materials Science, Multidisciplinary
Zeshan Zada, Junaid Khan, Abdul Ahad Khan, Ali H. Reshak, Dania Ali, Fazal Ur Rehman, Inayat Urrahman, Muhammad Saqib, Muhammad Irfan, Muhammad M. Ramli
Summary: In this study, the detailed properties of the rare-Earth based XMn2Si2 (X=Dy, Er) compounds were investigated using the FP-LAPW method with GGA+U in the ferromagnetic phase. The results show that the ferromagnetic phase is the most suitable for these compounds, as supported by previous experimental findings. The compounds exhibit metallic behavior with hybridization between the Dy/Er-f and Mn-d states in the valence band and the Si-p state in the conduction band. The rare-Earth based DyMn2Si2 compound shows stronger ferromagnetic behavior patterns compared to ErMn2Si2. Additionally, ErMn2Si2 demonstrates high ZT values in the high-temperature region, making it a potential contender for high-temperature applications in waste heat management.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Muhammad Irfan, Nasir Ayub, Qazi Arbab Ahmed, Saifur Rahman, Muhammad Salman Bashir, Grzegorz Nowakowski, Samar M. M. Alqhtani, Marek Sieja
Summary: Sentiment analysis is being studied in the field of text mining to computationally handle a text's views, emotions, subjectivity, and subjective nature. The researchers developed a novel method called ResNet-SCSO for extracting expressions from textual information and addressing the problem of removing emotional aspects through multi-labeling. By analyzing five distinct datasets and using various techniques such as preprocessing, GloVe and TF-IDF feature extraction, and word association using word2vec, the accuracy of ResNet-SCSO was tested and found to outperform other commonly used techniques.
Article
Energy & Fuels
Shagufta Saeed, Mahnoor Shahid, Rahat Naseer, Misbah Ghazanfar, Muhammad Irfan
Summary: This study presents the production of levan, a naturally occurring polysaccharide, through solid state fermentation using various sucrose-rich fruit peels. Mango peels were found to have the highest levan yield, which was further optimized through response surface methodology. The functional groups of levan were confirmed by FTIR analysis and it was found to contain only fructose sugar.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Computer Science, Information Systems
Saeed Ali Alsareii, Mohsin Raza, Abdulrahman Manaa Alamri, Mansour Yousef AlAsmari, Muhammad Irfan, Hasan Raza, Muhammad Awais
Summary: Obesity poses challenges to healthcare and individuals, but surgery can reduce risks and enable weight loss. State-of-the-art technologies, such as IoT, can be used to effectively communicate and analyze patient data. The proposed IoT framework aims to create accurate patient profiles and translate data into meaningful information.
CMC-COMPUTERS MATERIALS & CONTINUA
(2023)
Article
Environmental Sciences
Naila Nureen, Yongrong Xin, Muhammad Irfan, Shah Fahad
Summary: Using natural resource-based view theory, this study examined the relationship between green supply chain management, green training, green organizational culture, and firm performance. Data was collected from 650 participants in the Chinese manufacturing sector through a survey questionnaire. Structural equation modeling (SEM) was used to test the hypotheses. The findings support the positive impact of green supply chain management on firm performance and highlight the mediating role of green training, as well as the moderating role of green organizational culture.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Computer Science, Artificial Intelligence
Adam Glowacz
Summary: This paper presents a technique for analyzing thermal images of minigrinders. Different states of minigrinders were analyzed and two methods for computing essential areas of thermal images were proposed. The analysis was verified and found to be effective for fault diagnosis with 100% recognition efficiency.
EXPERT SYSTEMS WITH APPLICATIONS
(2024)
