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1414 articles for ““SPA””
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Covariance based Clustering for Digital Image Compression
Abstract: Traditionally clustering is done based on distance between the data points and the cluster centroids. A new type of clustering based on distance between the covariance matrices of the clustered data points was recently introduced. This allows clustering data points according to their spatial distribution model. This paper presents an improved algorithm for the computation of covariance based clustering with application to digital image compression. Karhunen-Loeve Transform is an optimal …
Published in Current Trends in Information Technology · Vol. 8, Issue 1, 2018 · pp. 16–21 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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A Short Survey of Data Compression Techniques for Column Oriented Databases
Abstract: AbstractColumn oriented data-stores has all values of a single column stored as a row followed by all values of the next column. Such way of storing records helps in data compression since values of the same column are of the similar type and may repeat. This paper surveys the various data compression techniques in column oriented databases. Data compression is efficiently used to save storage space and network bandwidth. It …
Published in Current Trends in Information Technology · Vol. 3, Issue 2, 2013 · pp. 1–6 Read article
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Designing an Energy Efficient Induction Motor: Advanced Computational Intelligence Technique
Abstract: Abstract—This paper presents an advanced computational intelligence technique (CIT), modified particle swarm optimization (MPSO) for designing energy efficient three-phase induction motor (DEEIM) including active power loss effect. PSO performs well for small dimensional and less complicated problems but fails to locate global minima for complex multi-minima functions. Even if PSO algorithm is easy to implement and has been shown to perform well on various power system optimization problems, they may …
Published in Current Trends in Information Technology · Vol. 9, Issue 2, 2019 · pp. 5–13 Read article
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An New Approach for Email Security
Abstract: Email is the most widely recognized approach to impart today. Email is utilized for sending instant messages and to send connection and sounds and recordings. For business information exchange email is the main means. It is the most common way to communicate over internet with different people all over the world. Also, it’s had disadvantages like cybercrime, people can use this means of communication for sending false mails spam, dangers, …
Published in Current Trends in Information Technology · Vol. 11, Issue 3, 2021 · pp. 8–11 Read article
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A Survey on Neural Network based Classifier for Arrhythmia Detection
Abstract: Electrocardiogram (ECG) is one of the important diagnostic tool for the detection of the heart problem. Increasing number of cardiac patients need automatic detection techniques for various abnormalities or arrhythmias of the heart to reduce pressure on physicians and share their load. Coronary Care Units (CCUs) emphasizes on the task of accurate analysis of ECG signal at an early stage that can prevent disease, like tachycardia, to escalate there by …
Published in Journal of Communication Engineering & Systems · Vol. 8, Issue 2, 2018 · pp. 88–97 Read article
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Communication at High Data Rate with VCSEL Over MMF and Investigations
Abstract: AbstractThis paper presents performance evaluation for the high data rate proposed communication network with VCSEL and multi-mode optical fiber. Numerous numerical evaluations have been carried out for key parameters over the span of multi-mode fiber. It showed wide eye opening over the selected length of fiber. It depicted good performance for line width of 10, lower normalizer average power, with temperature value of 40 degree centigrade. Overall performance over 2km …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 1, 2019 · pp. 14–21 Read article
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Recent Advances of Distributed Optical Fiber Raman Amplifiers in Ultra Wide Wavelength Division Multiplexing Telecommunication Networks
Abstract: ABSTRACTRecently, many research works have been focused on the fiber optic devices for optical communication systems. One of the main interests is on the optical amplifiers to boost a weak signal in the communication systems. In order to overcome the limitations imposed by electrical regeneration, a means of optical amplification was sought. The competing technology emerged: the first was Raman amplification. One reason was that the optical pump powers required …
Published in Journal of Communication Engineering & Systems · Vol. 1, Issue 1-3, 2011 · pp. 44–59 Read article
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Mitigation of Mobile Radio Parasitic Radiation Effects: A Review
Abstract: ABSTRACT In this paper, mitigation techniques useful for improving mobile radio systems power efficiency and decreasing electro-smog and specific absorption rate (SAR) induction, affecting human head and body, are presented. An analysis of main radiation effects from far field base stations and review of mitigation techniques for enhancing the efficiency of power transmission for mobile radio systems is shown, followed by an investigation of the complex radiation field components from …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 1, 2012 · pp. 1–12 Read article
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Amelioration of Parameters of Antenna using Metamaterial with Negative µ and ε for WLAN
Abstract: AbstractIn this paper, a Rectangular Microstrip Patch Antenna with “Multi Discoidal Rings” shaped metamaterial cover is designed and replicate at a height of 3.276mm from the ground plane. The antenna along with the proposed metamaterial cover is designed to resonate at 3.36 GHz frequency (in S-Band). Proposed metamaterial cover significantly reduces the return loss and increases the bandwidth and efficiency of the antenna in comparison to rectangular microstrip patch antenna …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 1, 2013 · pp. 4–10 Read article
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A Multi-Hop Power Adaptive MAC Protocol using Fuzzy Logic for Wireless Networks
Abstract: AbstractPower-based connectivity is a recent research topic in ad hoc networks. Implementing power control mechanisms is essential to enhance the lifetime of the network, and also to improve the throughput, find cost-effective routes and spatial reuse. In this paper, MAC protocol is used for implementing coordination functions and power-control mechanisms using fuzzy rules. Fuzzy rules are generated by upper layers of the network layer using two input variables such as …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 3, 2013 · pp. 1–9 Read article
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Incorporating Mobility to Sensor Networks during Node Failure and Their Analysis for Radio Propagation Models
Abstract: AbstractWireless sensor networks are expected to find wide applicability and increasing deployment in the near future. It consists of spatially distributed autonomous sensors to monitor physical or environmental conditions and to cooperatively pass their data through the network to a main location. The more modern networks are bi-directional, also enabling control of sensor activity. The development of wireless sensor networks was motivated by military applications such as battlefield surveillance, many …
Published in Journal of Communication Engineering & Systems · Vol. 4, Issue 1, 2014 · pp. 29–35 Read article
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Performance Analysis of Wireless Propagation Model to Improve Signal Strength and BER for Wireless Mobile Network
Abstract: AbstractWhenever we setup a network, environment properties such as fading, scattering etc. plays a very important role in choosing spectrum and method of propagation. The spectrum deals with frequency range suitable for communication in a particular environment, and the propagation method deal with channel selection, channel sensing and to perform quality communication throughout the network. To achieve quality output from the network, it is necessary to define network under different …
Published in Journal of Communication Engineering & Systems · Vol. 5, Issue 2, 2015 · pp. 1–7 Read article
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Capacity and BER Performance Analysis of Single Cell Massive MIMO with Various Precoding Techniques
Abstract: AbstractMassive Multi Input Multi Output (MIMO) is one of the promising technologies which will facilitate the 5th generation wireless communication system (5G) in the near future. It also goes by other names such as, large MIMO, hyper MIMO, full-dimension MIMO and ARGOS. In this technology the Base Station is incorporated with a large number of transmitting antennas (e.g., Hundreds, thousands). A large number of antenna help to focus the energy …
Published in Journal of Communication Engineering & Systems · Vol. 6, Issue 1, 2016 · pp. 1–14 Read article
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An Overview of Classification of Signal and System
Abstract: AbstractSignals and systems are abstract concepts of a wide variety of physical variables and processes in various fields in engineering and sciences. This paper presents the basic idea of signal and system along with their classification. In the real world, any quantity reveals variation in time or variation in space or any other independent variable is potentially a signal. This paper includes a theoretical view with some supportive equation in …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 2, 2019 · pp. 46–49 Read article
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Zoom Based Image Super-Resolution: Using Two Level DWT as Feature Model
Abstract: AbstractIn this paper we present an algorithm of super-resolution (SR) imaging to reconstruct high-resolution (HR) image from sequence of low-resolution (LR) images of static scene captured at the different camera zoom factor. The resultant HR image is constructed at the resolution of the most zoomed LR image. In the proposed approach algorithm uses LR images of the static scene captured at three distinct zoom-factors. Learning based SR technique is used …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 2, 2019 · pp. 95–105 Read article
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Social Media Intervention in COVID-19
Abstract: According to a scientific theory, a terrible pandemic happens every once in a few years. Like an Example in 1720 "Great plague of Marseille", in 1820 "Cholera pandemic",1920 "Spanish Flu", and 2020 "Corona Virus" and like every time, social media has been playing its role in a special way.Social media creates a virtual world through the Internet which the user can access using any platform of social media (Facebook, Twitter, …
Published in Journal of Communication Engineering & Systems · Vol. 11, Issue 1, 2021 · pp. 28–35 Read article
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A Review of Particle Swarm Optimization
Abstract: Particle swam optimization (PSO) is a computational technique that streamlines a problem by attempting to improve the arrangement of an applicant with respect to a given value ratio iteratively. This approaches the problem by having a number of candidate solutions, and then pushes the particles in the search space according to a mathematical equation over the position and velocity of the particles. Researchers and specialists have provided various perspectives and …
Published in Journal of Communication Engineering & Systems · Vol. 11, Issue 2, 2021 · pp. 29–36 Read article
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GPS-based Dengue Risk Index App
Abstract: Our idea is to develop GPS-based dengue risk index app which is mainly used to predict the outburst of dengue diseases in user’s location. The prediction is based on analysing climatic condition. The climatic parameters that are used in analysis are temperature, rainfall and humidity. Linear regression algorithm is used to extrapolate in the multidimensional space to predict the threat of dengue exploration at user’s location. The dengue risk index …
Published in Journal of Computer Technology & Applications · Vol. 9, Issue 1, 2018 · pp. 12–16 Read article
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Salient Region Guided Deep Network for Violence Detection in Surveillance Systems
Abstract: Abstract: It is significant to detect violent actions in video surveillance systems automatically, for example, bus stands, malls and railway stations. Though, the earlier detection techniques generally extract statistic features around the spatiotemporal interest points or extract descriptor in the regions where movement takes place, leading to limited abilities to successfully detect violence activities in video surveillance systems. To solve this problem, a new approach for the automatic detection of …
Published in Journal of Computer Technology & Applications · Vol. 10, Issue 3, 2019 · pp. 19–28 Read article