|Speed Conrol of Separately Excited dc Motor using Fuzzy Technique|
This paper presents the speed control of a separately excited DC motor using Fuzzy Logic Control (FLC). The Fuzzy Logic Controller designed in this study applies the required control voltage based on motor speed error (e) and its change (ce). The performance of the driver system was evaluated through digital simulations using Simulink. The simulation results show that the control with FLC outperforms PI control in terms of overshoot, steady state error and rise time...
Keywords: DC motor; chopper; FLC
|FPGA Implementation of Large Area Efficient and Low Power Geortzel Algorithm for Spectrum Analyzer|
Spectrum analysis is very essential requirement in instrumentation and communication signal interception .Spectrum analysis is normally carried out by online or offline FFT processing. But the FFT being highly mathematical intensive, is not suitable for low area and low power applications. Offline FFT processing can’t give the real time spectrum estimation which is essential in communication signal interception...
Keywords: FFT; Goertzel algorithm; Spectrum Analysis; VHDL; XilinX ISE; Modelsim; Spartan 3E-FPGA board
|Small Signal Stability Improvement and Congestion Management Using PSO Based TCSC Controller|
In this paper an attempt has been made to study the application of Thyristor Controlled Series Capacitor (TCSC) to mitigate small signal stability problem in addition to congestion management of a heavily loaded line in a multimachine power system. The Flexible AC Transmission System (FACTS) devices such as TCSC can be used to control the power flows in the network and can help in improvementof small signal stability aspect...
Keywords: Congestion management; Particle Swarm Optimization; Small Signal Stability; Thyristor Controlled Series Compensator; Transmission Line Flow Sensitivity
|FIR Filter Design using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach|
This paper presents an alternative approach for the design of linear phase digital low pass FIR filter using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach (PSO-CFIWA). FIR filter design is a multimodal optimization problem. The conventional gradient based optimization techniques are not efficient for digital filter design. Given the filter specification to be realized, PSO algorithm generates a set of filter coefficients and tries to meet the ideal frequency ch...
Keywords: FIR Filter; PSO; GA; Optimization; Magnitude Response; Convergence; Low Pass Filter
|TCAD Based Analysis of Gate Leakage Current for High-k Gate Stack MOSFET - Ides Editor|
Scaling of metal-oxide-semiconductor transistors to smaller dimensions has been a key driving force in the IC industry. This work analysis the gate leakage current behavior of nano scale MOSFET based on TCAD simulation. The Sentaurus Simulator simulates the high-k gate stack structure of N-MOSFET for analysis purpose. The impact of interfacial oxide thickness on the gate tunneling current has been investigated as a function of gate voltages for a given equivalent oxide thickness (EOT) of 1.0 nm...
Keywords: MOESFET; inelastic trap assisted tunnelling; gate tunneling current; High-k stack
|Sensor Aided Automatic Path Finding Wheelchair - Ides Editor|
A conventional motorized wheelchair has been fitted with sensors and programmed with an intelligent guidance system to efficiently maneuver itself automatically from one point to another in a facility equipped with a grid of sensors that provide the wheelchair with the basic map of its course. The device described in this paper has been conceptualized such that once the wheelchair is given information regarding the starting and stopping point in a controlled facility, the wheelchair with this pr...
Keywords: wheelchair; automatic; motorized; sensor aided; path finding
|Image Denoising Techniques Preserving Edges|
The objective of this work is to propose an image denoising technique and compare it with image denoising using ridgelets. The proposed method uses slantlet transform instead of wavelets in ridgelet transform. Experimental result shows that the proposed method is more effective than ridgelets in noise removal. The proposed method is effective in compressing images while preserving edges.
Keywords: ridgelet; slantlet transform; image denoising; compression; huffman; edge
|Prototyping a Wireless Sensor Node using FPGA for Mines Safety Application|
The sensor nodes in a wireless sensor network are normally microcontroller based which are having limited computational capability related to various applications. This paper describes the selection, specification and realization of a wireless sensor node using the field programmable gate array (FPGA) based architecture for an early detection of hazards (e.g fire and gas-leak ) in mines area. The FPGAs in it’s place are more efficient for complex computations in compare to microcontrollers, wh...
Keywords: Wireless Sensor Network (WSN); system on programmable chip (SOPC); FPGA
|Race Identification for Face Images|
Humans are able to process a face in a variety of ways to categorize it by its identity, along with a number of other demographic characteristics, including race, gender , and age. Experimental results are based on a face database containing subjects. Race and gender also play an important role in face-related applications. Experimental results are indicated that participants categorized the race of the faceand this categorization drives the perceptual process...
Keywords: race identification; PCA; face recognition
|FIR Filter Implementation by Systolization using DA-based Decomposition|
In this paper we present 1D and 2D systolic Distributed Arithmetic (DA) based structures that are designed for the implementation of Finite Impulse Response (FIR) filters. The paper compares the 1D DA based systolic structure with 1D systolic DA based decomposition method. The filters are implemented on a Xilinx Virtex II Pro (XC2VP30) FPGA using HDL and system metrics like Area, Gate Count, MaximumUsable Frequency and Power consumption are estimated for different filter orders and address lengt...
Keywords: Distributed arithmetic (DA); Field Programmable Gate Arrays (FPGA); Finite Impulse Response (FIR) filter; systolic array
|A Novel Controller Based 48-Pulse STATCOM for Reactive Power Compensation and Voltage Stabilization in High Voltage Applications|
These paper presents the dynamic operation of a novel control scheme for Static Synchronous Compensator (STATCOM) based on a new full model comprising a 48-pulse Gate Turn-Off (GTO) thyristor voltage source converter for combined reactive power compensation and voltage stabilization of the electric grid network. The novel controllerfor the STATCOM presented in this paper is based on a decoupled strategy using the direct and quadrature components of the STATCOM current...
Keywords: 48-pulse GTO thyristor model STATCOM; novel decoupled control strategy; reactive compensation; voltage stabilization
|Design and Analysis of Power and Variability Aware Digital Summing Circuit - Aminul Islam, Mohd. Hasan|
Due to aggressive scaling and process imperfection in sub-45 nm technology node Vt (threshold voltage) shift is more pronounced causing large variations in circuit response. Therefore, this paper presents the analyses of various popular 1-bit digital summing circuits in light of PVT (process, voltage and temperature) variations to verify their functionality and robustness. The investigation is carried with ±3ó process parameters and ±10% VDD (supply voltage) variation by applying Gaussian dis...
Keywords: Carbon nanotube field effect transistor (CNFET); transmission gate (TG); random dopant fluctuation (RDF); line edge roughness (LER); energy delay product (EDP)
|Simultaneous Generation Expansion Planning and Natural Gas Expansion Planning|
Generation Expansion Planning (GEP) is one of the most important issues in long-term power system planning. In from past, investigators noticed to GEP and supply of energy. In power system planning, generation expansion planning is performed for 5-yrears planning horizon or more. There are two main objective functions in GEP. First is the minimization of investment cost and another one is the maximization of reliability...
Keywords: Combines Cycle Generation Technology (CCGT); Generation Expansion Planning (GEP); Load Dispatch Planning; Natural Gas Expansion Planning (NGEP)
|Development of Switch Mode Dc Converter Using MATLAB/ dSPACE|
In this paper with the help of Matlab/Simulink and dSPACE, the Switch-Mode DC Converter is built in real-time to control the output voltage of the controller using PWM algorithm. First, the Simulink model of Switch-Mode DC Converter (i.e. Single-Pole and Two-Pole Converter Model) is built and, after verifying the results, it is implemented in real-time. Next, a DC motor is connected to the output terminals (i.e...
Keywords: Single-pole; Two-pole; dSPACE
|Extending UML State Diagrams to Model Agent Mobility - Feras Ahmad Hanandeh and Majdi Yousef Al-Shannag|
This paper presents a simplified form of UML state diagrams for modeling agent mobility. Mobile agent has gained more importance technology. The notations used to model agent mobility are focused on capturing agent creation, mobility paths and current agent location. In this paper, we demonstrate how the simplification of the state UML 2.0Activity Diagrams can be used for modeling mobile agent applications...
Keywords: UML State Diagrams; Agent Mobility; UML Sequence Diagrams
|A PIC compatible RISC CPU core Implementation for FPGA based Configurable SOC platform for Embedded Applications|
Modern embedded systems are built around the soft core processors implemented on FPGA. The FPGAs being capable of implementing custom hardware blocks giving the advantage of ASICs, and allowing the implementation of processor platform are resulting in powerful Configurablesystem on chip(C-SoC)platforms. The Microchip’s PIC microcontroller is very widely used microcontroller architecture across various embedded systems...
Keywords: CPU; RISC; IP Core; IC; MXE; Xilix
|Genetic Algorithm based Optimal Placement of Distributed Generation Reducing Loss and Improving Voltage Sag Performance|
This paper proposes a genetic algorithm optimization technique for optimal placement of distributed generation in a radial distribution system to minimize the total power loss and to improve the voltage sag performance. Load flow algorithm and three phase short circuit analysis are combined appropriately with GA, till access to acceptableresults of this operation. The suggested method is programmed under MATLAB software...
Keywords: Distributed Generation; Line Loss; Voltage Sag; Genetic Algorithm; and Radial Distribution network
|Realization of Current-mode Quadrature Oscillator Based on Third Order Technique|
This article presents a 3rd current-mode quadrature oscillator using current controlled current conveyor transconductance amplifier (CCCCTA) and operational transconductance amplifier (OTA) as active element as active elements. The proposed circuit is realized from a noninverting lossless integrator and an inverting second orderlow-pass filter. The oscillation condition and oscillation frequency can be electronically/orthogonally controlled via input bias currents...
Keywords: oscillator; current-mode; CCCCTA; OTA
|Overview of Existing Methods of Spam Mining and Potential Usefulness of Sender’s Name as Parameter for Fuzzy String Matching|
This paper gives an overview and analyzes the different existing anti spamming techniques both content based, non content based methods and a combination of the duo. It also suggests that a small change in one of the parameters in the fuzzy string matching method could be useful to produce better results.
Keywords: email; spam; computer forensics; fuzzy string match
|Thinned Concentric Circular Array Antennas Synthesis using Improved Particle Swarm Optimization - Durbadal Mandal, Debanjali Sadhu and Sakti Prasad Ghoshal|
Circular antenna array has gained immense popularity in the field of communications nowadays. It has proved to be a better alternative over other types of antenna array configuration due to its all-azimuth scan capability, and a beam pattern which can be kept invariant. This paper is basically concerned with the thinning of a large multiple concentric circular ring arrays of uniformly excited isotropic antennas based on Improved Particle Swarm Optimization (IPSO) method...
Keywords: Concentric Circular Antenna Arrays; Particle Swarm Optimization; Thinning; Sidelobe Level
|Overbank Flow Condition in a River Section - Ides Editor|
When the flows in natural or man made channel sections exceed the main channel depth, the adjoining floodplains become inundated and carry part of the river discharge. Due to different hydraulic conditions prevailing in the river and floodplain of a compound channel, the mean velocity in the main channel and in the floodplain are different. This leads to the transfer of momentum between the main channel water and that of the floodplain making the flow structure more complex...
Keywords: Over bank Flow; flow interaction; horizontal interface; Flow distribution; Velocity distribution; Main channel; Flood plain
|A New Soft-Switched Resonant DC-DC Converter|
This paper presents a new soft-switched resonant dcdc converter using a passive snubber circuit. The proposed converter uses a new zero voltage and zero current switching (ZVZCS) strategies to get ZVZCS function. Besides operating at constant frequency, all semiconductor devices operate at soft-switching without additional voltage and current stresses. In order to validate the proposed converter, computer simulations and experimental results were conducted...
Keywords: ZVZCS; resonant; converter; semiconductor; current switching; snubber
|Modeling, Analysis and Simulation of VFT for Power Flow Control through Asynchronous Power Systems|
Variable Frequency Transformer (VFT) is a controllable bi-directional transmission device that can transfer power between asynchronous networks. It avoids both HVDC link and FACTS based power transmission control system. Basically, it is a rotatory transformer whose torque is adjusted in order to control the power flow. In this paper, a simulated model of VFT is used as a controllable bidirectionalpower transmission device that can control power flow through the connected asynchronous power syst...
Keywords: Variable frequency transformer (VFT); MATLAB; Asynchronous power systems; Power flow
|Static Synchronous Series Compensator (SSSC) with Superconducting Magnetic Energy Storage (SMES) for the Enhancement of Transient Stability in Multi- Area System|
Static Synchronous Series Compensator (SSSC) has been designed with Superconducting Magnetic Energy Storage (SMES) system. A closed loop control scheme has been proposed with PI controller and real and reactive powers are taken as references. A 48 pulse voltage source inverter is designed for the SSSC. Control scheme for the chopper circuit of SMES coil is also designed. A three area system is taken as the test system and the operation of SSSC with SMES is analysed for various transient disturba...
Keywords: SSSC; SMES; Transient stability; voltage source inverter; closed loop control
|A Refined Space Vector PWM Signal Generation for Multilevel Inverters|
A refined space vector modulation scheme for multilevel inverters, using only the instantaneous sampled reference signals is presented in this paper. The proposed space vector pulse width modulation technique does not require the sector information and look-up tables to select the appropriate switching vectors. The inverter leg switching times are directly obtained from the instantaneous sampled reference signal amplitudes and centers the switching times for the middle space vectors in a samplin...
Keywords: dual-fed induction motor; space vector PWM; sampled sinusoidal reference signals; triangular carrier signals; middle space vectors
|Built-in Self Repair for SRAM Array using Redundancy - A. Padma Sravani, Dr. M. Satyam|
In this paper, a built-in self repair technique for word-oriented two-port SRAM memories is presented. The technique is implemented by additional hardware design instead of traditional software diagnostic procedures and the computation time is minimized. A built-in self-test (BIST) is used to detect the faulty locations which are isolated immediately after detection. Therefore, the redirection process can be executed as soon as possible...
Keywords: SRAM; two-port memories; PVT faults; fault isolation; BISR
|Design of UPQC with Minimization of DC Link voltage for the Improvement of Power Quality by Fuzzy Logic Controller|
Devices such as power electronics converters, inject harmonic currents in the AC system and increase overall reactive power demanded by the equivalent loads are presents non-linear characteristics. Also, the number of sensitive loads that require ideal sinusoidal supply voltages for their proper operation has increased. In order to keep power quality under limits proposed by standards, it is necessary to include some sort of compensation...
Keywords: unified power quality conditioner; fuzzy logic controller; powewr quality; dc link voltage
|Automated Colorization of Grayscale Images Using Texture Descriptors|
A novel example-based process for automated colorization of grayscale images using texture descriptors (ACTD) without any human intervention is proposed. By analyzing a set of sample color images, coherent regions of homogeneous textures are extracted. A multi-channel filtering technique is used for texture-based image segmentation. For each area of interest, state of the art texture descriptors are then computed and stored, along with corresponding color information...
Keywords: Image colorization; Fuzzy C-means clustering; Gabor transform; CBIR
|An Area Efficient, High Performance, Low Dead Zone, Phase Frequency Detector in 180 nm CMOS Technology for Phase Locked Loop System - R. H. Talwekar, Dr. S. S. Limaye|
The phase frequency detector has been designed for high frequency phase locked loop in 180 nm CMOS Technology with 1.8V supply voltage using CADENCE Spectre tool. A Virtuoso Analog Design Environment and Virtuoso LayoutXL tools of Cadence have used to design and simulate schematic and layout of phase frequency detector respectively. Architecture of phase frequency detector (PFD) has simulated to get low dead zone and low power consumption...
Keywords: Phase locked loop (PLL); Phase frequency detector (PFD); Charge pump (CP); Voltage controlled oscillator (VCO); Dead Zone; Low pass filter (LPF); and D flip flop (DFF)
|Treatment of NOx from Diesel Engine Exhaust by Dielectric Barrier Discharge Method - Ides Editor|
This paper reports improved performance of discharge plasma in filtered engine exhaust treatment. Our paper deals about the removal of NOX emissions from the diesel exhaust by electric discharge plasma. For the treatment of diesel exhaust a new type of reactor referred to as cross-flow dielectric barrier discharge reactor has been used, where the gas flow is perpendicular to the corona electrode. Experiments were conducted at different flow rates ranging from 2 l/min to 10 l/ min...
Keywords: Electric Discharge; Dielectric Barrier Discharge Cross Flow Reactor (CFR); NOX removal; Filtered diesel exhaust
|Control Strategies for Solid oxide Fuel cell voltage|
This paper presents a comprehensive non-linear dynamic model of a solid oxide fuel cell (SOFC) that can be used for transient behaviors studies. The model based on electrochemical and thermal equations, accounts for temperature dynamics and output voltage losses. The relaxation time is strongly related to the transient temperature distribution of the solid oxide fuel cell structure. Therefore, it is in the order of some minutes depending on the design parameters and the operating conditions...
Keywords: Fuel cell; FCPP; SOFC
|Image Fusion of Video Images and Geo-localization for UAV Applications|
We present in this paper a very fine method for determining the location of a ground based target when viewed from an Unmanned Aerial Vehicle (UAV). By determining the pixel coordinates on the video frame and by using a range finder the target’s geo-location is determined in the North- East-Down (NED) frame. The contribution of this method is that the target can be localized to within 9m when view from an altitude of 2500m and down to 1m from an altitude of 100m.This method offers a highly ver...
Keywords: UAV Applications
|Waste from Food Industry and their Disposal: Some Facts - IDES editor|
Due to increasing industrialization quantity of waste water is increasing at alarming rate while compositions of such waste are being more and more complex. Disposal of such waste must follow suitable treatments so that qualities of effluent for disposal follow requisite standards. Such Standards for effluent are discussed and a case study for a beverage producing plant is reported.
Keywords: industrial waste; eco-friendly disposal; effluent standards; law enforcement; waste minimization
|Harmonic Minimization In Multilevel Inverters By Using PSO|
Harmonic Elimination in a multilevel inverters is an optimization problem which is solved by applying particle swarm optimization (PSO) technique. The derived equation for the computation of total harmonic distortion (THD) of the output voltage of the multilevel inverter is used as the objective function in PSO algorithm. The objective function used is to reduce the THD of the multilevel inverter and obtain the corresponding switching angles with the elimination of possible lower order harmonics...
Keywords: selective harmonic elimination(SHE); particle swarm optimization(PSO); Total harmonic distortion(THD)
|Design And Performance of Finite impulse Response Filter Using Hyperbolic Cosine Window - Harish Kumar, Piyush Kumar and Kaushal Kumar,Venkat babu G|
In this paper a proposed of design and analysis of Finite impulse response filter using Hyperbolic Cosine window (Cosh window for short). This window is very useful for some applications such as beam forming, filter design, and speech processing. Digital FIR filter designed by Kaiser window has a better far-end stop-band attenuation than filter designed by the other previously well known adjustable windows such as Dolph-Chebyshev and Saramaki, which are special cases of Ultraspherical windows, b...
Keywords: Digital FIR filter; far-end stopband attenuation; side-lobe roll-off ratio; window technique; Kaiser Window; Hyperbolic Cosine window
|Performance Comparison of Rerouting Schemes of Multi Protocol Label Switching Network.|
In this paper, we attempt to present a comparison through rigorous studies (existing conventional models) following software based modeling and verifications through simulations in terms of various traffic parameters such as packet loss, Recovery Time (Latency), reordering of packets including recovery time for various widely used path recovery models for the purpose of end-to-end recovery of LSPs inMPLS domains using NS2 simulator...
Keywords: MPLS .path -recovery; software modeling and simulations; traffic engineering; LSP (Label Switch Path); end-to-end delay; recovery time
|Incremental Difference as Feature for Lipreading|
This paper represents a method of computing incremental difference features on the basis of scan line projection and scan converting lines for the lipreading problem on a set of isolated word utterances. These features are affine invariants and found to be effective in identification of similarity between utterances by the speaker in spatial domain.
Keywords: Incremental Difference Feature; Euclidean distance; Lipreading
|A Sensitive Wavelet-Based Algorithm for Fault Detection in Power Distribution Networks - Ides Editor|
This paper presents a wavelet based technique for detection and classification of abnormal conditions that occur on power distribution lines. The transients associated with these conditions contain a large spectrum of frequencies, which are analyzed using wavelet transform approach. The proposed technique depends on a sensitive fault detection parameter (denoted SFD) calculated from wavelet multi-resolution decomposition of the three phase currents...
Keywords: Wavelet Transform; Fault detection; Distribution Networks; Inrush currents
|A New Active Snubber Circuit for PFC Converter|
In this paper, a new active snubber circuit is developed for PFC converter. This active snubber circuit provides zero voltage transition (ZVT) turn on and zero current transition (ZCT) turn off for the main switch without any extra current or voltage stresses. Auxiliary switch turns on and off with zero current switching (ZCS) without voltage stress. Although there is a current stress on the auxiliary switch, it is decreased by diverting it to the output side with coupling inductance...
Keywords: Power factor correction (PFC); soft switching (SS); ZCS; ZCT; and ZVT
|Intelligent Gradient Detection on MPPT Control for VariableSpeed Wind Energy Conversion System|
The problem of control associated wind energy conversion systems using horizontal-axis fixed-pitch variable speed low-power, working in the partial load region, consisting in the energy conversion maximization, is approached here under the assumption that the wind turbine model and its parameters are poorly known. Intelligent gradient detection method by using Maximum Power Point Tracking (MPPT) fuzzy control approach is proposed control solution aims at driving the average position of the opera...
Keywords: MPPT; wind energy; optimal control; WECS
|A Novel Fuzzy Variable-Band Hysteresis Current Controller For Shunt Active Power Filters|
This paper presents a novel fuzzy control scheme applied to shunt active power filters for harmonic and reactive power compensation. A TSK type fuzzy logic controller is proposed for APF reference current generation. To control the maximum switching frequency of the converter within limit a novel fuzzy hysteresis band current controller is used. The band height, based on fuzzy control principle is changedwith the value of supply voltage and slope of reference current...
Keywords: active power filter; nonlinear load; TSK type fuzzy controller; harmonics; indirect current control scheme
|Performance analysis of Multiband - OFDM systems using LDPC coder in pulsed - OFDM modulation for UWB communications|
In this paper, a combined approach where low density parity check (LDPC) codes are used to reduce the complexity and power consumption of pulsed orthogonal frequencydivision multiplexing (pulsed-OFDM) ultra-wideband (UWB) systems is described. The proposed system uses LDPC codes to achieve higher code rates without using convolution encoding and puncturing thereby reducing the complexity and power consumption of pulsed-OFDM system...
Keywords: Low Density Parity Check (LDPC); pulsed orthogonal frequency-division multiplexing (pulsed-OFDM); orthogonal frequency-division multiplexing (OFDM); LDPCpulsed- OFDM; ultra-wideband (UWB); digital video broadcasting-satellite-second generation (DVB-S2); wireless personal area networks (WPAN)
|Efficient Optimal Sizing And Allocation Of Capacitors In Radial Distribution Systems Using Drdlf And Differential Evolution|
A distribution system is an interface between the bulk power system and the consumers. The radial distribution system is popular among these because of its low cost and simple design. The voltage instability in the power system is characterized by a monotonic voltage drop, which is slow at first and becomes abrupt after some time when the system is unable to meet the increasing power demand. Therefore to overcome these problems capacitors are used...
Keywords: Electrical Distribution Network; Optimal Capacitors Placement; Dimension reducing distribution load flow (DRDLF); Differential Evolution (DE) Algorithm
|Loss Reduction by Optimal Placement of Distributed Generation on a Radial feeder|
Due to the increasing interest on renewable sources in recent times, the studies on integration of distributed generation to the power grid have rapidly increased. In order to minimize line losses of power systems, it is crucially important to define the location of local generation to be placed. Proper location of DGs in power systems is important for obtaining their maximum potential benefits. This paperpresents analytical approaches to determine the optimal location to place a DG on radial sy...
Keywords: Analytical approach; distributed generation; radial systems; optimal placement; power loss
|Modeling and simulation of fourteen bus system employing D-STATCOM for power quality improvement|
This work deals with modeling and simulation of fourteen bus system employing D-STATCOM for power quality improvement. The improvement in voltage stability with D-STATCOM is presented. A 11 level inverter based DSTATCOM is proposed to reduce the harmonics in the output. Voltages at various buses with and without D-STATCOM are presented. The simulation results are compared with the analytical results.
|Performance Analysis of Interconnect Drivers for Ultralow Power Applications|
ultralow power consumption requirement of low throughput applications needs to operate circuits in subthreshold region where subthreshold leakage current is used as active current for necessary computations. This paper investigates the impact of interconnect drivers on digital circuit performance in subthreshold region. In particular, we have investigates the performance of Si-MOSFET and CNFETs at 32nm deep submicron technology node...
Keywords: Subthreshold; Ultra-low power; CNFET; Monte- Carlo analysis
|Marathi Isolated Word Recognition System using MFCC and DTW Features|
This paper presents a Marathi database and isolated Word recognition system based on Mel-frequency cepstral coefficient (MFCC), and Distance Time Warping (DTW) as features. For the extraction of the feature, Marathi speech database has been designed by using the Computerized Speech Lab. The database consists of the Marathi vowels, isolated words starting with each vowels and simple Marathi sentences...
Keywords: CSL; MFCC; DTW; Spectrogram; Speech Recognition and statistical method
|A Novel Optimum Technique for JPEG 2000 Post Compression Rate Distortion Algorithm|
The new technique we proposed in this paper based on Hidden Markov Model in the field of post compression rate distortion algorithms certainly meet the requirements of high quality still images. The existing technology has been extensively applied in modern image processing. Development of image compression algorithms is becoming increasingly important for obtaining a more informative image from several source images captured by different modes of imaging systems or multiple sensors...
Keywords: JPEG 2000; Hidden Markov Model; Rate distortion; Scalability; Image compression; post compression
|Image Compression using WDR & ASWDR Techniques with different Wavelet Codecs|
In this paper, two different Wavelet based Image Compression techniques are compared. The techniques involved in the comparison process are WDR and ASWDR. The above two techniques are implemented with different types of wavelet codecs. Wavelet difference reduction (WDR) has recently been proposed as a method for efficient embedded image coding. This method retains all of the important features like low complexity, region of interest, embeddedness, and progressive SNR...
Keywords: Wavelet Image Compression; WDR; ASWDR
|On the Performance Analysis of Multi-antenna Relaying System over Rayleigh Fading Channel|
In this work, the end-to-end performance of an amplify-and-forward multi-antenna infrastructure-based relay (fixed relay) system over flat Rayleigh fading channel is investigated. New closed form expressions for the statistics of the received signal-to-noise ratio (SNR) are presented and applied for studying the outage probability and the average bit error rate of the digital receivers. The results reveal that the system performance improves significantly (roughly 3 dB) for M=2 over that for M=1...
Keywords: Diversity; fading channel; moment generating function(mgf); outage probability