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Bijoy Kumar Upadhyaya

Bio: Bijoy Kumar Upadhyaya is an academic researcher from Tripura Institute of Technology. The author has contributed to research in topics: VHDL & Field-programmable gate array. The author has an hindex of 7, co-authored 12 publications receiving 157 citations.

Papers
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Journal ArticleDOI
TL;DR: This paper provides a generalized, but detailed analysis of the power consumption causes (internal and external) of a smartphone and also offers suggestive measures to minimize the consumption for each factor.
Abstract: The advancement and popularity of smartphones have made it an essential and all-purpose device. But lack of advancement in battery technology has held back its optimum potential. Therefore, considering its scarcity, optimal use and efficient management of energy are crucial in a smartphone. For that, a fair understanding of a smartphone’s energy consumption factors is necessary for both users and device manufacturers, along with other stakeholders in the smartphone ecosystem. It is important to assess how much of the device’s energy is consumed by which components and under what circumstances. This paper provides a generalized, but detailed analysis of the power consumption causes (internal and external) of a smartphone and also offers suggestive measures to minimize the consumption for each factor. The main contribution of this paper is four comprehensive literature reviews on: 1) smartphone’s power consumption assessment and estimation (including power consumption analysis and modelling); 2) power consumption management for smartphones (including energy-saving methods and techniques); 3) state-of-the-art of the research and commercial developments of smartphone batteries (including alternative power sources); and 4) mitigating the hazardous issues of smartphones’ batteries (with a details explanation of the issues). The research works are further subcategorized based on different research and solution approaches. A good number of recent empirical research works are considered for this comprehensive review, and each of them is succinctly analysed and discussed.

87 citations

Book ChapterDOI
01 Jan 2019
TL;DR: This chapter highlights the challenges faced by today's healthcare systems and analyzes how to overcome these with the help of pervasive healthcare, and presents an assessment of the current and future IoT healthcare market along with a listing of the key players.
Abstract: Advances in smart medical devices and pervasive systems are turning connected healthcare into a prospering platform for pervasive healthcare. The Internet of Things (IoT), smart sensors, and wearables have augmented the healthcare system, enabling remote monitoring and supporting the medical condition of the patient in and out of clinics. This chapter aims to serve as a brief primer on the development of smart and pervasive healthcare systems. The chapter starts with an overview of IoT, smart sensors, and pervasive systems and also their interrelationships. The differences between IoT and pervasive systems are meticulously laid out to clear any confusion between these two computing paradigms. The chapter highlights the challenges faced by today's healthcare systems and analyzes how to overcome these with the help of pervasive healthcare. It discusses the basics of mobile and pervasive healthcare, including context-aware and connected healthcare, while distinguishing them from telemedicine. It elaborates on the role of IoT in healthcare while discussing a number of sensors and smart devices used in healthcare, fitness, and medical care units. The benefits of and challenges involved in pervasive healthcare are reviewed comprehensively. Several real-life applications and use cases of IoT and smart sensors are presented, showing the effectiveness of pervasive healthcare. The chapter also presents an assessment of the current and future IoT healthcare market along with a listing of the key players.

56 citations

Proceedings ArticleDOI
01 Dec 2010
TL;DR: This paper presents a finite state machine based novel technique to model the Address Generation circuitry of WiMAX multimode interleaver using VHDL on FPGA platform with all code rates and modulation schemes of IEEE 802.16e standard.
Abstract: Wireless technology is the fastest growing segment of the modern communication industry. The IEEE 802.16e standard, commonly known as mobile WiMAX, is the latest wireless technology that has promised to offer Broadband Wireless Access over long distance. The concept of OFDM is used in WiMAX to obtain high data rate in addition to reducing the effects like inter symbol interference and inter channel interference. It has proved to be the air interface for next generation Broadband Wireless System. In this paper, we present a finite state machine based novel technique to model the Address Generation circuitry of WiMAX multimode interleaver using VHDL on FPGA platform with all code rates and modulation schemes of IEEE 802.16e standard. Our approach provides better performance in terms of maximum operating frequency, use of flip-flops with negligible loss in terms of logic cells utilized compared to existing FPGA based implementations. Measured circuit parameters and software simulation of this model are also provided.

28 citations

Book ChapterDOI
01 Jan 2020
TL;DR: In this article, the authors present an in-depth discussion on different aspects of ubiquitous manufacturing, including production planning and scheduling, automated material handling system, and dynamic manufacturing from the perspective of real-life scenarios.
Abstract: The industrial revolution has changed the socio-economic civilisation of mankind. It started dating back in the late 1700s and has been in continuous evolution since then. Presently, we are experiencing the latest industrial revolution, known as Industry 4.0. Among others, ubiquitous technologies probably have been the most influential in the implementation of Industry 4.0. This has led to a new manufacturing paradigm known as ubiquitous manufacturing. This chapter presents an in-depth discussion on different aspects of ubiquitous manufacturing. In addition to the history of industrial revolutions and the fundamentals of ubiquitous manufacturing, the topics such as production planning and scheduling, automated material handling system, and dynamic manufacturing are meticulously discussed from the perspective of the real-life scenarios, in the age of ubiquitous manufacturing. The ubiquitous technologies that have enabled ubiquitous manufacturing are reviewed in detail. Several other related and advanced manufacturing technologies such as cloud manufacturing, cloud robotics, global manufacturing, lean manufacturing, agile manufacturing, additive manufacturing, chaordic manufacturing, etc. are duly accentuated. A futuristic view on Industry 5.0 is also presented.

20 citations

Journal ArticleDOI
TL;DR: A low-complexity and novel technique is proposed to efficiently implement the address generation circuitry of the 2-D deinterleaver used in the WiMAX transreceiver using the Xilinx field-programmable gate array (FPGA).
Abstract: In this brief, a low-complexity and novel technique is proposed to efficiently implement the address generation circuitry of the 2-D deinterleaver used in the WiMAX transreceiver using the Xilinx field-programmable gate array (FPGA). The floor function associated with the implementation of the steps, required for the permutation of the incoming bit stream in channel interleaver/deinterleaver for IEEE 802.16e standard is very difficult to implement in FPGA. A simple algorithm along with its mathematical background developed in this brief, eliminates the requirement of floor function and thereby allows low-complexity FPGA implementation. The use of an internal multiplier of FPGA and the sharing of resources for quadrature phase-shift keying, 16-quadrature-amplitude modulation (QAM), and 64-QAM modulations along with all possible code rates makes our approach to be novel and highly efficient when compared with conventional look-up table-based approach. The proposed approach exhibits significant improvement in the use of FPGA resources. Exhaustive simulation has been carried out to claim supremacy of our proposed work.

15 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, a review of recent developments in piezoelectric nanostructured materials, polymers, polymer nanocomposites, and polyamide films for implementation in energy harvesting is presented.
Abstract: Piezoelectric materials are widely referred to as "smart" materials because they can transduce mechanical pressure acting on them to electrical signals and vice versa. They are extensively utilized in harvesting mechanical energy from vibrations, human motion, mechanical loads, etc., and converting them into electrical energy for low power devices. Piezoelectric transduction offers high scalability, simple device designs, and high-power densities compared to electro-magnetic/static and triboelectric transducers. This review aims to give a holistic overview of recent developments in piezoelectric nanostructured materials, polymers, polymer nanocomposites, and piezoelectric films for implementation in energy harvesting. The progress in fabrication techniques, morphology, piezoelectric properties, energy harvesting performance, and underpinning fundamental mechanisms for each class of materials, including polymer nanocomposites using conducting, non-conducting, and hybrid fillers are discussed. The emergent application horizon of piezoelectric energy harvesters particularly for wireless devices and self-powered sensors is highlighted, and the current challenges and future prospects are critically discussed.

146 citations

Journal ArticleDOI
TL;DR: A systematic literature review protocol is proposed to study how mobile computing assists IoT applications in healthcare, contributes to the current and future research work of IoT in the healthcare system, brings privacy and security in health IoT devices, and affects the IoT inthe healthcare system.
Abstract: The impact of Internet of Things has been revolutionized in all fields of life, but its impact on the healthcare system has been significant due to its cutting edge transition. The role of Internet of Things becomes more dominant when it is supported by the features of mobile computing. The mobile computing extends the functionality of IoT in healthcare environment by bringing a massive support in the form of mobile health (m-health). In this research, a systematic literature review protocol is proposed to study how mobile computing assists IoT applications in healthcare, contributes to the current and future research work of IoT in the healthcare system, brings privacy and security in health IoT devices, and affects the IoT in the healthcare system. Furthermore, the intentions of the paper are to study the impacts of mobile computing on IoT in healthcare environment or smart hospitals in light of our systematic literature review protocol. The proposed study reports the papers that were included based on filtering process by title, abstract, and contents, and a total of 116 primary studies were included to support the proposed research. These papers were then analysed for research questions defined for the proposed study.

110 citations

Journal ArticleDOI
TL;DR: This paper provides a generalized, but detailed analysis of the power consumption causes (internal and external) of a smartphone and also offers suggestive measures to minimize the consumption for each factor.
Abstract: The advancement and popularity of smartphones have made it an essential and all-purpose device. But lack of advancement in battery technology has held back its optimum potential. Therefore, considering its scarcity, optimal use and efficient management of energy are crucial in a smartphone. For that, a fair understanding of a smartphone’s energy consumption factors is necessary for both users and device manufacturers, along with other stakeholders in the smartphone ecosystem. It is important to assess how much of the device’s energy is consumed by which components and under what circumstances. This paper provides a generalized, but detailed analysis of the power consumption causes (internal and external) of a smartphone and also offers suggestive measures to minimize the consumption for each factor. The main contribution of this paper is four comprehensive literature reviews on: 1) smartphone’s power consumption assessment and estimation (including power consumption analysis and modelling); 2) power consumption management for smartphones (including energy-saving methods and techniques); 3) state-of-the-art of the research and commercial developments of smartphone batteries (including alternative power sources); and 4) mitigating the hazardous issues of smartphones’ batteries (with a details explanation of the issues). The research works are further subcategorized based on different research and solution approaches. A good number of recent empirical research works are considered for this comprehensive review, and each of them is succinctly analysed and discussed.

87 citations

Journal ArticleDOI
TL;DR: In this paper, the authors highlight the working principle and the past research work carried out by the various authors that utilize FSAM as a fabrication process and present the current scenario and future scope of the FSAM process are also discussed in detail in terms of its utilization in various sectors of engineering along with estimated future trends.
Abstract: Friction stir additive manufacturing (FSAM) method is one of the growing techniques of additive manufacturing that utilizes the concept of solid state friction stir processing to develop multilayer components through layer by layer joining. The present work aims to highlight the working principle and the past research work carried out by the various authors that utilize FSAM as a fabrication process. Based on the available experimental data, the summary of additive based friction stir processes, type of machine for fabrication, materials, process parameters taken for the study is also discussed in detail. Mechanical properties such as grain refinement, microhardness variation, and tensile strength are also summarized, in comparison with their base materials. In addition, the current scenario and future scope of the FSAM process are also discussed in detail in terms of its utilization in various sectors of engineering along with estimated future trends.

76 citations

Journal ArticleDOI
TL;DR: The challenges in the successful realization of IoNT are discussed critically, along with a special discussion on internet of bio-nano things (IoBNT) and its potential in making IoNT more compatible to human body.
Abstract: Healthcare sector is probably the most benefited from the applications of nanotechnology. The nanotechnology, in the forms of nanomedicine, nanoimplants, nanobiosensors along with the internet of nano things (IoNT), has the potential to bring a revolutionizing advancement in the field of medicine and healthcare services. The primary aim of this paper is to explore the clinical and medical possibilities of these different implementations of nanotechnology. This paper provides a comprehensive overview of nanotechnology, biosensors, nanobiosensors, and IoNT. Furthermore, multilevel taxonomies of nanotechnology, nanoparticles, biosensors, nanobiosensors, and nanozymes are presented. The potential medical and clinical applications of these technologies are discussed in details with several examples. This paper specifically focuses on IoNT and its role in healthcare. In addition to describing a general architecture of IoNT for healthcare, the communication architecture of the IoNT is also explained. The challenges in the successful realization of IoNT are also discussed critically, along with a special discussion on internet of bio-nano things (IoBNT) and its potential in making IoNT more compatible to human body.

72 citations