by differential relay using the algorithm based on wavelet transform with Neural Network. The wavelet transform is a powerful tool in the analysis of the power transformer transient phenomena because of its ability to extract information from the transient signals simultaneously in both the time and frequency domain. Neural network is used because of its self-learning and highly nonlinear mapping capability. Keywords – Wavelet Transform‚ back propagation neural netwok‚ transformer differential protection
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2ND QUARTER 2007‚ VOLUME 9‚ NO. 2 www.comsoc.org/pubs/surveys CHANNEL ESTIMATION FOR WIRELESS OFDM SYSTEMS MEHMET KEMAL OZDEMIR‚ LOGUS BROADBAND WIRELESS SOLUTIONS‚ INC. AND HUSEYIN ARSLAN‚ UNIVERSITY OF SOUTH FLORIDA ABSTRACT Orthogonal frequency division multiplexing (OFDM) is a special case of multi-carrier transmission and it can accommodate high data rate requirement of multimedia based wireless systems. Since channel estimation is an integral part of OFDM systems‚ it is critical
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advantage of FDTD over other full-wave models is that‚ FDTD being a time domain method allows broadband analysis of the antenna by Gaussian pulse excitation. The antenna characteristics over a wide frequency range can be obtained by taking the Fourier transform of the FDTD simulation results obtained when a wideband Gaussian pulse is used as an excitation. 4.1 FINITE DIFFERENCE TIME DOMAIN METHOD Finite-difference time-domain
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STATE ELIGIBILITY TEST COMPUTER SCIENCE AND APPLICATIONS (SYLLABUS) SUBJECT CODE : 28 PAPER-II 1. Discrete Structures Sets‚ Relations‚ Functions‚ Pigeonhole Principle‚ Inclusion-Exclusion Principle‚ Equivalence and Partial Orderings‚ Elementary Counting Techniques‚ Probability. Measure(s) for information and Mutual information. Computability: Models of computation-Finite Automata‚ Pushdown Automata‚ Non-determinism and NFA‚ DPDA and PDAs and Languages accepted by these structures
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References: R.I. Damper‚ Introduction to Discrete-Time Signals and Systems‚ Chapman & Hall‚ London‚ 1995. D. J. Ewins. Modal: Theory‚ Practice and applications . Engineering Dynamic Series. Research Studies press Ltd.‚ Baldock‚ Hertfordshire‚ England‚ second ed ition‚ 2000. D.L. Donoho‚ De-noising
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(MIMO) orthogonal frequency division multiplexing (OFDM) VLC system overcomes the modulation bandwidth limitation of LED and satisfies the requirements of the transmitted signal for IM/DD. Two transmit data streams require only one inverse Fourier transform (IDFT) block‚ resulting in low computational complexity of the system. A MIMO system provides a significant improvement in capacity and data rates‚ compared with their single input output (SISO) counterparts‚ without any increase in bandwidth
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A PROJECT REPORT ON DETECTION OF SINGLE-SIDE-BAND MODULATION Submitted in partial fulfillment of the requirements For the award of the degree BACHELOR OF ENGINEERING IN ____________________________________ ENGINEERING SUBMITTED BY -------------------- (--------------) --------------------- (---------------) --------------------- (---------------) DEPARTMENT OF _______________________ ENGINEERING __________COLLEGE OF ENGINEERING AFFILIATED TO ___________ UNIVERSITY
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Gd2O3 nanopowders doped with different concentrations of Er3+ and Yb3+ were synthesized using the combustion method. The starting reagents‚ Gd(NO3)3 6H2O‚ Er(NO3)3 5H2O‚ Yb(NO3)3 xH2O and NH2CH2COOH (glycine)‚ which was used as a fuel in reaction‚ of an analytical grade were purchased from Sigma Aldrich and Alfa Aesar. The ratio of glycine to nitrate was kept as 0.56 [31‚ 32]. The appropriate amounts of the starting reagents were dissolved in a minimum amount of deionized water. The solution was
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CHAPTER 1: INTRODUCTION The Electrical Engineering Senior Capstone Project is intended to give each student experience in completing a sophisticated design project that spans most of the senior year. Planning‚ management of time‚ allocation of responsibility‚ documentation‚ and presentation of the results are integrated with the technical design task. The students work with one or two faculty advisors who have expertise in the project research area. The student is fully responsible for the design
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IFDMA - A Promising Multiple Access Scheme for Future Mobile Radio Systems R. Pon arun kumar. Abstract The Interleaved Frequency Division Multiple Access (IFDMA) scheme is based on compression‚ repetition and subsequent user dependent frequency shift of a modulated signal. IFDMA is a promising candidate MA scheme for non adaptive transmission in the uplink of future mobile radio systems.
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