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1049 articles for “Multiplication”
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Characterizing L-Band EDFA for WDM Optical Communication using Implicit Analytical Model
Abstract: ABSTRACT In this paper, some of the significant design parameters of L-band EDFA such as choice of optimum pump wavelength, optimum erbium-doped fiber (EDF) length, and optimum pump power have been characterized by solving implicit analytical signal gain equation using simulation as derived for C-band EDFA by F. F. Rühl. After determining optimum pump wavelength, optimum pump power and optimum EDF length, performance of L-band signal amplification has been shown …
Published in Trends in Opto-electro & Optical Communication · Vol. 2, Issue 3, 2012 · pp. 8–16 Read article
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Performance Improvement of RoF & FSO based Hybrid Network using Multi Beam Transmission
Abstract: Radio over Fiber and Free Space Optics has become a popular technology to provide wireless data services to mobile users. But both have their own limitations when implemented separately. In this manuscript, we have proposed a multi beam transmission assisted hybrid network based on Radio over Fiber and Free Space Optics. It is revealed that by deploying multiple beams in the free space transmission, the data rate is enhanced by …
Published in Trends in Opto-electro & Optical Communication · Vol. 13, Issue 2, 2023 · pp. 1–6 Read article
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Evolving Perspectives: Innovations in Object Detection and Identification
Abstract: One of the most important developments in computer vision has been the creation of object detection and identification systems, which have allowed robots to perceive and understand visual data similarly to humans. These systems locate each object by drawing a bounding box around it, in addition to detecting and classifying every object in an image or video. This study suggests a novel method for item identification and detection that makes …
Published in Trends in Opto-electro & Optical Communication · Vol. 13, Issue 3, 2023 · pp. 23–27 Read article
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Prioritization of Transit Stations to Promote as Transit-Oriented Development Using Analytic Hierarchy Process
Abstract: Multi-Criteria Decision-Making (MCDM) is always a tricky process for choosing the best optimal among various alternatives available. Analytic Hierarchy Process (AHP) is one of the most widely used concepts across the globe in different disciplines among various MCDM methods. In this study, AHP is used to prioritise the new or existing transit stations for its Transit Oriented Development (TOD) implication. TOD is known as multi faced planning concept which assures …
Published in Trends in Transport Engineering and Applications · Vol. 6, Issue 2, 2019 · pp. 14–29 Read article
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Evaluating the Best Belt Conveyor Assembly Using TOPSIS Approach
Abstract: This article presents a new approach for the selection of Belt Conveyor of screening creaser on the basis of their performance. This article includes the effective factors like angle of response, load capacity of motor, raw material load capacity, raw material dimension. These all important factors affect the performance of Belt Conveyor Assembly. Therefore, determination of the best Belt Conveyor is basically a Multi-Attribute Decision Making (MADM) problem. Our aim …
Published in Trends in Transport Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 1–6 Read article
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Evaluation of Impacts of Dispatch Headway Variability in Bus Transit Systems in a Simulated Route
Abstract: This paper presents reliability analysis of bus transit systems based on numerical simulation of the range of headway variations in a bus route consists of multiple stops. Variation of performance in bus operation due to the variation of departure headways is determined through number of simulations. Operational performance is measured by the average waiting time of passengers at stops. Simulation results show that average waiting time as well as spread …
Published in Trends in Transport Engineering and Applications · Vol. 1, Issue 3, 2014 · pp. 7–18 Read article
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Computer Programming Tool for the Design of Concrete Mixes for Pavement Quality Concrete Roads in India
Abstract: Basically concrete is a mixture of cement, sand, aggregates and water. These constituents bonds together and hardens with time and give strength to structure. The proportioning of concrete mixes consists of determining relative quantities of materials to be used. Thus to calculate proportions of various components of concrete several mix calculations are required to be performed. Consequently, it is not possible to select at once the exact mix proportion required …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 30–38 Read article
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Towards a Geo-Classification of the Niger Delta for Highway Investment Costing Applications
Abstract: The study carries out a quasi-experimentation, as a basis of devising a spatial quantitative concept, delineating distinct geologic settings which would have differing cost implications for highway infrastructure development in the Niger Delta region of Nigeria. Three broad conceptual geomorphic boundaries, for the categorisation of Niger Delta soils in engineering geologic costing application, were discerned within this conceptual lens. The study further statistically explores the synthesised geo-zonation for differences in …
Published in Trends in Transport Engineering and Applications · Vol. 7, Issue 1, 2020 · pp. 24–40 Read article
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Investigation of Locational and Non-locational Factors Influencing Crash Severity: A Developing World Perspective
Abstract: Traffic crash is one of the major causes of mortality and injuries in Bangladesh. This study provides multiple crash data reviews over four consecutive years, starting from 2016 to 2019 of Chittagong City Corporation. This analysis is intended to assess the impacts of various parameters on the severity of traffic crashes. The study technique consists of several phases. This research provides a broad description of the variables in the first …
Published in Trends in Transport Engineering and Applications · Vol. 8, Issue 2, 2021 · pp. 30–46 Read article
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Determination of Quick Switching Double Sampling System by Attributes under Fuzzy Poisson Distribution: Acceptance Number Tightening
Abstract: AbstractAcceptance sampling plans are used to accept or reject the lots based on the inspection of samples. A mixture of acceptance sampling plans with switching rules for changing from one plan to another are called acceptance sampling schemes. The simple and most generally used sampling scheme is quick switching system (QSS-1). Quick switching system with reference to single sampling plan is a system which requires fewer samples for processes running …
Published in Current Trends in Information Technology · Vol. 7, Issue 3, 2017 · pp. 17–23 Read article
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A Review of Digital Image Watermarking Techniques for Secure Data Transmission
Abstract: AbstractNowadays, a chief problem encountered by content providers and owners is the protection of their material. The ease by which digital information can be duplicated and distributed has led to the need for effective copyright protection tools. Recently digital watermarking technology has emerged as an effective solution for protecting the digital content from unauthorized copying. With its area of application coexisting in all three forms of media, i.e., image, music …
Published in Current Trends in Information Technology · Vol. 3, Issue 1, 2013 · pp. 1–6 Read article
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Comparison of Advance Data Modulation Formats in 4×10 Gbps WDM Optical Communication System using YDFA-EDFA and Raman-EDFA Hybrid Amplifiers
Abstract: In this paper, comparison of various advance data modulation formats in 4×10 Gbps wavelength division multiplexing (WDM) optical communication system using various hybrid optical amplifiers (YDFA-EDFA and Raman-EDFA) has been carried out. The advance modulation formats under study include non-return-to-zero (NRZ), return-to-zero (RZ), carrier-suppressed return-to-zero (CSRZ), Duobinary return-to-zero (DRZ) and modified Duobinary return-to-zero (MDRZ). The WDM hybrid system has been analyzed over 100 km fiber for 10 Gbps system. It …
Published in Current Trends in Information Technology · Vol. 10, Issue 1, 2020 · pp. 23–29 Read article
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Evaluation of Ensemble and Deep Learning Classifiers on CSE-CIC-IDS2018 Dataset for Intelligent NIDS
Abstract: Network Intrusion Detection System (NIDS) plays an active role in preventing cyberattacks by early detection of threats before it really starts affecting targeted information services. Over the years, many intrusion detection system (IDS) have been developed applying signature or rule-based approach to prevent unauthorised access of network or computer devices. However, ever growing landscape of cyberattacks in recent years has motivated present day researchers to design and develop more accurate …
Published in Current Trends in Information Technology · Vol. 13, Issue 1, 2023 · pp. 1–11 Read article
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The Impact of Applied Artificial Intelligence in Scientific Research: Advancements, Challenges and Opportunities
Abstract: Artificial Intelligence, encompassing machine learning, natural language processing, and computer vision, is playing a pivotal role in revolutionizing scientific research across multiple fields, facilitating significant advancements and breakthroughs in various domains. This work present a comprehensive review of the applications of applied artificial intelligence in scientific research. I will discuss recent advancements, challenges, and the potential opportunities that AI presents for accelerating scientific discoveries and fostering interdisciplinary collaborations.
Published in Current Trends in Information Technology · Vol. 13, Issue 3, 2023 · pp. 14–19 Read article
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Design and Simulation of FIR Filter using VHDL
Abstract: Digital Signal Processing (DSP) has gained great popularity in the recent years. DSP is used in the field of communication, medicine and entertainment. Earlier the digital signals use is expensive in the communication devices. DSP makes use of the digital filters in the communication equipment. The basic building block of the digital filter-adder, coefficient multipliers and delays. Digital filter can be implemented efficiently by selecting an efficient representation for filter …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 1, 2018 · pp. 19–28 Read article
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Radio-Frequency (RF) Energy Transfer and Harvesting Techniques with Rectifier and Antenna
Abstract: Electromagnetic energy has an important role in power and energy industry. As the demand for power increases, need for alternate energy sources are essential. Radio frequency (RF) energy transfer and harvesting techniques becomes one of the solutions. Basic RF harvesting circuit consists of three elements. This can be achieved by using a rectenna combination of rectifier and antenna. The antenna is to receive RF signal and rectifier to convert RF …
Published in Journal of Communication Engineering & Systems · Vol. 10, Issue 1, 2020 · pp. 1–5 Read article
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Networked Embedded Systems Eliminate Safety Hazards in Rail Journey
Abstract: ABSTRACT Introducing R&D into Rail transport is a good way to make sure that Railway decisions reflect the needs of passengers. Putting in place a foolproof security architecture and best brand components in the design of a safety system can ensure railway commutation in a high security environment. Managing security through proactive monitoring and event management is the key for achieving desired results. Safety and Punctuality — the two watch …
Published in Journal of Communication Engineering & Systems · Vol. 1, Issue 1-3, 2011 · pp. 34–43 Read article
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Performance Analysis of OFDM System Using Non-conventional Transform and Non-conventional Mapping Schemes over Rayleigh Channel
Abstract: ABSTRACT High data rate wireless transmission is required to meet the rapidly increasing demands for mobile communications. Fast Fourier transform (FFT)-OFDM has drawn much attention due to its simple implementation and robustness against frequency-selective fading channels. Recently, the advantages of the discrete cosine transform (DCT)-based OFDM have come to the light. In this paper, performance of the conventional FFT-OFDM system is compared with non-conventional DCT-OFDM in terms of bit error …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 1, 2012 · pp. 13–20 Read article
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Improvement of BER in Wavelet Transform-based OFDM System with Kalman Filter
Abstract: AbstractWe know that bandwidth is the most precious commodity in all communication systems such as 2G, 3G and 4G. Each service provider is now searching how to accommodate a large number of users within a limited allocated bandwidth, In order to increase the data rate of wireless medium with higher performance, orthogonal frequency division multiplexing (OFDM) is chosen. In this paper, the bit error rate analysis (BER) of discrete wavelet …
Published in Journal of Communication Engineering & Systems · Vol. 4, Issue 1, 2014 · pp. 21–28 Read article
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Analysis and Application of Cognitive Radio on 4G Communications
Abstract: AbstractNowadays network services are available anywhere and anytime through the advancement in wireless communication technology. Several technology and generation are introduced for wireless communication such as 2.5G, 3G etc. But for faster and reliable communication wireless generations are improved—4G technology is one of them. 4G communication systems are being developed to solve the various problems faced by the current communication systems (3G, 2.5G). 4G will be an intelligent technology that …
Published in Journal of Communication Engineering & Systems · Vol. 4, Issue 3, 2014 · pp. 1–8 Read article