Bhagwan Das

ORCID: 0000-0002-0731-6353
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Research Areas
  • Advanced Photonic Communication Systems
  • Optical Network Technologies
  • Semiconductor Lasers and Optical Devices
  • Photonic and Optical Devices
  • Advanced Optical Network Technologies
  • Optical Wireless Communication Technologies
  • Interconnection Networks and Systems
  • Microgrid Control and Optimization
  • IoT and Edge/Fog Computing
  • Low-power high-performance VLSI design
  • Analog and Mixed-Signal Circuit Design
  • Advanced Fiber Optic Sensors
  • Embedded Systems Design Techniques
  • Wireless Communication Networks Research
  • Coal Properties and Utilization
  • Optimal Power Flow Distribution
  • Mineral Processing and Grinding
  • Digital Filter Design and Implementation
  • Advanced Wireless Communication Techniques
  • Robotic Locomotion and Control
  • PAPR reduction in OFDM
  • Parallel Computing and Optimization Techniques
  • Advancements in PLL and VCO Technologies
  • Power Quality and Harmonics
  • Smart Grid Energy Management

Torrens University Australia
2024-2025

Media Design School
2024

Melbourne School of Theology
2024

Ziauddin University
2023

Quaid-e-Awam University of Engineering, Science and Technology
2015-2023

ASTER
2023

Chandka Medical College
2022

Institute of Medical Sciences
2022

College of Physicians and Surgeons Pakistan
2022

Conference Board
2021

Single Image Super-resolution (SISR) produces high-resolution images with fine spatial resolutions from aremotely sensed image low resolution. Recently, deep learning and generative adversarial networks(GANs) have made breakthroughs for the challenging task of single super-resolution (SISR). However, thegenerated still suffers undesirable artifacts such as, absence texture-feature representationand high-frequency information. We propose a frequency domain-based spatio-temporal remote...

10.1145/3456726 article EN ACM Transactions on Intelligent Systems and Technology 2021-12-20

Wheels are a critical component of railway infrastructure and work as the load carrier train. However, defective wheels pose serious risk to safety that can gravely jeopardize people's safety. There is significant injury or death from wheels, endangering lives individuals. In this research, FaultSeg dataset presented for automatic train wheel defect detection transportation around world. The consists 829 manually annotated images faulty acquired by an indigenously developed wayside data...

10.1038/s41597-025-04557-0 article EN cc-by-nc-nd Scientific Data 2025-02-20

Silica fiber under high pressure increases the risk of breakage or permanent deformation, which may cause sensor failure due to mechanical strength limitations. High can also induce birefringence in optical fiber. In this study, we present a simple design and low-cost using polymer (POF) based on intensity-variation technique. A side-coupling mechanism structure is adopted, varies intensity with applied pressure. Two POFs are twisted together create sensing region where light launched first...

10.1038/s41598-024-69094-z article EN cc-by-nc-nd Scientific Reports 2024-08-10

In a typical 10G-Passive Optical Network (XG-PON), the propagation delay between Unit (ONU) and Line Terminal (OLT) is about 0.3 ms. With frame size of 125 μs, this amounts to three frames data in upstream downstream. Assuming no processing delays, grants for any bandwidth requests reach ONU after six request-grant cycle. Often, during six-frame delay, queue situation changed drastically, as much, more would arrive queue. As result, queued that delayed loses its significance due real-time...

10.3390/electronics8020147 article EN Electronics 2019-01-31

Summary Visible light communication (VLC) is an alternative technology to the radio frequency (RF) for different applications in indoor and outdoor environments, it could be utilized illumination simultaneously, offers several advantages over contemporary RF technologies such as low power consumption, free license, large bandwidth, being friendly environment. In this paper, VLC system uniformity improvement terms of high received power, signal‐to‐noise ratio (SNR), bit rate, with RMS delay...

10.1002/dac.4349 article EN International Journal of Communication Systems 2020-01-28

In the rapidly growing Internet of Things (IoT) landscape, federated learning (FL) plays a crucial role in enhancing performance heterogeneous edge computing environments due to its scalability, robustness, and low energy consumption. However, one major challenges such is efficient selection nodes optimization resource allocation, especially dynamic resource-constrained settings. To address this, we propose novel architecture called Multi-Edge Clustered Edge AI Heterogeneous Federated...

10.1038/s41598-024-78239-z article EN cc-by-nc-nd Scientific Reports 2024-11-20

Visible light communications (VLC) is a promising technology that regarded as alternative to radio frequency (RF), due its unregulated free bandwidth, considerable life expectancy, low cost, and efficiency. In this paper, an optical attocells configuration model proposed. It incorporates number of LED chips for power evaluated in terms data rate BER performance. Also, it optimized achieve higher received SNR distribution. This was achieved by varying field view (FOV). Besides, various rates...

10.1109/cisct.2019.8777433 article EN 2019-03-01

Abstract Satellite image processing has been widely used in recent years a number of applications such as land classification, Identification transfer, resource exploration, super‐resolution image, etc. Due to the orbital location, revision time, quick view angle limitations, and weather impact, satellite images are challenging manage. There many types resolution, spatial, spectral, temporal. Still, our case, we concentrated on spatial resolution super resolve from low‐resolution images. For...

10.1049/ipr2.12136 article EN IET Image Processing 2021-02-10

Visible light communication (VLC) is a promising candidate that expected to revolutionize indoor environment communications performance and fulfill fifth generation beyond (5GB) technologies requirements. It offers high free bandwidth, electromagnetic interference immunity, low-cost front end low power consumption. Also, VLC has dual functions could be utilized in both illumination concurrently. The number of optical attocells (OAs) their deployment the room represent main issue should taken...

10.30880/ijie.2021.13.06.022 article EN cc-by-nc-sa International Journal of Integrated Engineering 2021-08-31

As machine learning models are increasingly applied to real-world scenarios, it is essential consider the possibility of changes in data distribution over time. Concept drift detection and adaptation refers process identifying tracking these updating model accordingly. Researchers have devoted significant efforts develop various techniques tools for concept adaptation, as this paper provides a generic roadmap review field. In paper, we begin by reviewing background stream classification its...

10.1109/access.2024.3358817 article EN cc-by-nc-nd IEEE Access 2024-01-01

The present study proposed a novel polymer optical fiber sensor design for vibration measuring. consists of two fibers; primary and secondary fibers. Where leads to power loss through bending couples the phase coupling. involves winding on supportive cylindrical tube make helical structure. makes eleven bend loops, which are considered as sensing points. Based theory, each loop variable amounts loss. To detect vibrating motion, is aligned perpendicularly with Combined fibers generate sensor....

10.1364/oe.540794 article EN cc-by Optics Express 2024-10-18

The 8-bit design is able to process 256 times input combination in compare 4-bit vedic multiplier, using approximates 6 basic elements, 2 IO buffers, approximate 1.5 total power dissipation. HSTL_I_12, SSTL18_I and LVCMOS12 are the most energy efficient standards HSTL, SSTL LVCMOS family respectively. Device static two types of also known as Leakage when device on but not configured. Design dissipation bit file downloaded FPGA there no switching activity. Vedic multiplier almost double...

10.17485/ijst/2016/v9i25/96633 article EN Indian Journal of Science and Technology 2016-07-15

UPS Uninterruptible power supply) is used as backup when the input source, usually national grid, fails to give a load. In addition growing use of electronic devices in industrial and residential systems, such UPS, controlled rectifiers, SMPS (Switch Mode Power Supplies), DC Converters, there serious problem caused by harmonics AC mains, which lowers quality. Harmonics can cause variety problems, including sensitive equipment failure, resonance issues, heated wires, loss, inefficient...

10.1155/2022/5466268 article EN cc-by Advances in Fuzzy Systems 2022-05-30
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