International Journal of Innovative Trends in Engineering
Approved By International Serial Standard(ISSN), National Science Library(NSL) and National Institute of Science Communication and Information Resources(NISCAIR)
ISSN: 2395-2946 (Online)

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IJITE - Volume 04, Number 02

Published On : April 2015
SNo. Paper Title & Authors Page Download
Optimization of Bit Error Rate and Q-factor in Fiber Optic Communication using Dense WDM
Arun Pratap Singh, Rashmi Pandey
Abstract: In telecommunication, a method for working dispersion that combines two or more types of single mode fiber to create the preferred dispersion over the whole link span has been offered. The total dispersion can be set at virtually any value as the contributions from different components may have opposite signs (i.e. either positive or negative) and hence they can partially, or completely, terminate each other. Dispersion-compensating fibers can be either placed at one location or distributed along the length of the fiber connection. Typically, dispersion management must consider single-mode fiber chromatic and Polarization mode dispersion (PMD) dispersion over a range of wavelengths. We design the dense WDM system signals at central wavelengths in the area of 1550 nm. This method offers almost negligible dispersion by reducing the jitter portion in Eye diagram. This method also offers high value of Q-factor and reduced BER in long haul optical communication networks.
Keywords: BER improvement, Modulation techniques, Optimization, NRZ, Chromatic dispersion, PMD, DCF, Q-factor, Threshold value, Dense WDM.
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Highly Efficient and Low Cost Substance Type Catalytic Convertor For Petrol Engine
Hardik J. Chauhan
Abstract: Main focus of research paper is to develop efficient and low cost catalytic converter from metal oxides readily available in the market. Modern car are equipped with three way catalytic converter. Which are made from Platinum group metals (PGM) and Cerium oxide (CeO2). Platinum group metals are identified as human health risk due to their rapid emissions in the environment from various resources like conventional catalytic converter, jewellers and other medical usages, and PGM are costly. CeO2 which is found in the Russia. It is required to Import in India for Manufacturing of catalytic converters. Work is to use metal oxides in Place of the PGM Group Metals and the oxide which are required to import such as CeO2. In these work catalytic converter is developed based on catalyst materials consisting of metal oxides such as, Calcium oxide, titanium dioxide, Aluminium oxide and Silicate-kaolin and cobalt oxide in the form of pellet type. In which Cobalt oxide replaces PGM.
Keywords: CO: Carbone monoxide, CO2:Carbon dioxide, HC:Hydrocarbon, NOx:Oxides of nitrogen, Catco:catalytic convertor, Kw:Kilowatt, TWC:Three way catalytic converter , Pt.:Platinum, Rpm:Revolution per minute, Ppm:Part per minute, PGM:Platinum group metal, PCV:Positive crank case ventilation, EGR:Exhaust gas recirculation, Effi.:Efficiency, A/F:Air Fuel, CMC:Carbide methyl cellulose, Na2O3Si: Sodium silicate, TiO2:Titanium dioxide, CaO:Calcium oxide, CoO:Cobalt oxide, CeO2:Cerium oxide, Al2O3 :Aluminium oxide, SiO2:Silicon dioxide, Ec:Conversion efficiency.
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Implementation of Energy Efficient Single Switch Controlled SRM Drive
M.N.Saravana Kumar, R.Sreedhar
Abstract: A low-cost and variable-speed drive requiring only a single controllable switch is presented. The proposed converter overcomes the drawback of the original single switch converter in terms of recovery energy circulation. The drive system is realized using an asymmetric two-phase switched reluctance motor (SRM), the proposed converter, and PIC controller. The new drive system retains the unique features of self-starting for all rotor position. A prototype drive has been built and tested to verify its practical viability. The market relevance of this new drive system is primarily due to its lowest cost structure, packaging compactness, self-starting feature and variable-speed operation. Because of these features, the new drive system offers a viable alternative to conventional fixed-speed brush-commutator motors and variable speed permanent magnet brushless dc motor drives in many high volume applications in the low-cost, energy efficient, high-volume categories such as fans, blowers, hand tools, and small appliances.
Keywords: Low-cost converter, switched reluctance motor (SRM), Variable-Speed drive.
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Design for Testability for Mixed Launch and Capture Power Reduction Based on Scan Chain Reordering
Neethy V, Raghu M.C
Abstract: Testing of digital VLSI circuits has many challenges as a consequence of rapid growth of semiconductor manufacturing technology. These challenges include keeping the test power and the delay produced within acceptable limits. Here proposed design for testability (DfT) support along with scan chain reordering for enabling the use of a set of patterns optimized for cost and quality as is, yet in a low power manner. Mixed testing of Launch off shift and Launch off capture operation can be performed to get higher fault coverage. Reordering of these scan chains significantly reduces the test power and delay while testing.
Keywords: Design for testability, scan chain reordering, mixed testing, Low power
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Design and Implementation of Real Time Audio Pitch Shifting on FPGA
Pranita R Morbale, Mahesh Navale
Abstract: Pitch shifting is a process to transpose tone up or down without changing its periodic properties. Current multimedia field is developing very fast where sound manipulation is important task. Mainly there are two categories to develop pitch shifting algorithm first one is time domain and another one is frequency domain. Time domain algorithms are not efficient for polyphonic audio signals .Frequency domain algorithm provides a better time-frequency resolution. In proposed system two algorithms are compared STFT (Short Time Fourier Transform) and CQT (Constant Q Transform).Both are analyzed in frequency domain. The performance of both algorithms is evaluated using MATLAB Simulink platform. It shows CQT is better time-frequency resolution, It is selected to deploy on FPGA evaluation board. Now-a-days FPGA (Field Programmable Gate Array) technology has become a viable target for the implementation of real time algorithms in different applications. Main objective is to design an algorithm efficient enough to enable real-time operation on FPGA board that allows real-time microphone input and speaker output. With Audio D/A and A/D conversion performed using AC’97 codec which is on development board. Transform (STFT) which is developed in MATLAB for Simulation purpose. As Field Programmable Gate Array (FPGA) technology has become viable target for real time algorithms implementations in different applications. Hence CQT is developed in MATLAB SIMULINK environment for hardware co-simulation and HDL is downloaded in Vertex 5 FPGA kit for real time implementation
Keywords: Pitch, STFT,FPGA, MATLAB Simulink,AC’97 codec, Virtex 5
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Decimal Floating Point Arithmetic
Vinod Kapse, Puneet Bharadwaj , Y. Arunika Rao
Abstract: The growing popularity of decimal computer arithmetic in scientific , commercial, financial and internet based applications. Binary floating point system is preferred in digital system. Its disadvantage is that it is quite different from manual calculations. Binary floating point introduces unacceptable error. It cannot give the accurate result of decimal values .So decimal floating point is used to get the exact value of decimal number. The IEEE 754 defines standard for Binary Floating- Point Arithmetic (IEEE 754) is the most widely used standard for floating -point computation. As the number of stages increases area and power consumption also increases. In order to reduce area and latency CSA adder with 3-stage pipelining technique is used. Binary to BCD conversion is also done in order to display the overflow and errors. The design is implemented on Xilinx tool and has been synthesis and simulated on the same tool.
Keywords: CSA, Pipelining, Latency, Area, BCD
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An Implementation of Attribute Based Encryption for Security in Cloud Environment
M Manoj Ramaiya, Aparajit Shrivastava, Swati Sengar
Abstract: Cloud-Computing has emerged as a solution for organizations that desire services on rent. It enables secureand on-demand networking services access to a centralized pool of resources. Among many of the services, File distributing and sharing is one of the most commonly used services in cloud .The requirement of data privacy grows with the faster growing Cloud-Computing. One of the solution for this is Attribute based encryption (ABE). In this paper a hybrid approach that blends ABE and Shifted Huffman Encoding (SFT) for encryption is proposed. The solution focal point on secrecy of data gain by Attribute based encryption and data compression . This paper is a relative study of many different ABE based techniques for Cloud Environment provided.
Keywords: Cloud-Computing, Hierarchical attribute based encryption, scalability, Fine-grained access control.
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Geotechnical Soil Characterization for Bridge Foundation along Bori-Kono Road, Rivers State, Nigeria
Prof. T. K. S. Abam, Dr. O. D. Ngerebara, Nelson Kiri
Abstract: Bori–Kono Road provides access to a large part of the eastern and south eastern sections of Rivers State especially with currently expanding industrial activities at the Aluminum Smelter Plant. With connecting roads to Opobo, Andoni, Bonny and surrounding communities, the Bori-Kono Road is bound to carry substantial vehicular traffic, necessitating the dualization of the existing road. The road which traverses the Benin Formation spans 35km with three (3) bridges. The major challenge of the road is the bridge foundation, thus estimation of the soil bearing capacity, using largely boring and relying on SPT, the axial pile capacities for driven and end bearing steel tubular piles of various diameters are predicted. Furthermore, dynamic soil properties of the subsoil and the litho-stratigraphy across the span of the road was determined through correlations with the assessment of vertical and horizontal variabilities in soil uniformity, permeability and other particle size distribution attributes.
Keywords: Standard penetration test (SPT), undrained cohesion, stratigraphy, geotechnical capacity of piles, settlement
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