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In the field of biomedicine, blood cells are complex in nature; the microscopic images of a blood stream contains RBCs, WBCs and Platelets. Pathological inspection of an infected cell based on the disease, is solely dependent on subjective assessment which usually leads to significant inter-observer variation in grading and subsequently resulting in late diagnosis. However automatic assessment of...
The Secure Image Compression consists of JPEG encoder in which 2D-DCT (2Dimensional — Discrete Cosine Transform) is used to provide security while compressing the image. In this paper Verilog design and hardware implementation of pipelined 2-D DCT are described. The architecture uses 4327 slices, 7621 LUTs, 25 I/Os of FPGA Spartan3E-XC3S500E and works at an operating frequency of 89.469MHz. The delay...
Distributed system has quite a lot of servers to attain increased availability of service and for fault tolerance. Balancing the load among these servers is an important task to achieve better performance. There are various hardware and software based load balancing solutions available. However there is always an overhead on Servers and the Load Balancer while communicating with each other and sharing...
Wavelength division multiplexing network is a method to improve capacity of transmission and to design the best path between the source and destination and assign the wavelength to the path for data transmission. A simple node is to be designed with Mixed Integer Linear Programming /GPLK 4.4 as the mathematical problem formulation for the single-hop and virtual hop of the network. Comparison of the...
MIMO wireless system is considered with various modulation techniques such as BPSK and 16-QAM. After modulating the signal is sent through channel which is represented by beamforming technique using SVD. The channel is modeled as matrix and decomposed in to number of independent orthogonal modes of excitation which will be referred as eigen modes of channel. The transmit beamforming is produced by...
The analog applications of different transport models applied on Gate Electrode Workfunction Engineered Silicon Nanowire MOSFET is investigated based on the simulated results from ATLAS and DevEdit. Simulation results show that this device demonstrates a superior performance in terms of better Ion/Ioff ratio in case of HDM, high output impedance in case of DDM, and EBM is efficient for depicting the...
This paper presents a comparison of Least Significant Bit (LSB) based data hiding and a proposed Histogram Shifting (HS)-Reversible Data Hiding (RDH) based on grayscale division. In LSB substitution data hiding method the secret message is embedded in the least significant bit of the cover image. In histogram shifting data hiding the pixel value of the cover image is either incremented or decremented...
This paper presents a microstepping stepper motor with constant current control algorithm for a precision positioning system. An open loop microstepping controller has been developed without position feedback. A constant current control algorithm has been designed with the feedback current to maintain the phase currents constant at any desired level. The current regulation of PMSM results in improvement...
This paper describes the design and implementation of user defined fused floating-point arithmetic operations that can be used to implement Radix 2 Fast Fourier Transform (FFT) for complex numbers used in Digital Signal Processing (DSP-C) processors. The design is implemented and simulated by targeting Xilinx vertex 5 FPGA device. This paper describes the optimization of fused floating point modules...
In this paper, gate induced band-to-band tunneling transistors are explored as a low voltage alternative because of their potential to achieve lower than 60mV/decade turn-off. Since BTBT is strongly dependant on the band gap of the semiconductor, lower band gap materials can help scaling down of Vnn-By engineering the transistor device structure and gate, such that the onset of tunneling occurs in...
In this paper, first time we have analyzed AlxGa1−xAs as a novel channel material for SOI based Tunnel Field Effect Transistor (TFET) with VDD = 0.7. This direct bandgap channel material Al0.2Ga0.8As is compared with other channel materials that show the good device features. Using this material as channel we can see that the leakage current is very low as well as the Miller capacitance is also very...
This paper investigates the performance of Multiple Input Multiple Output (MIMO) cognitive radio network to provide highly reliable communication for all users in a network and efficient utilization of radio spectrum in a fair-minded way based on outage probability. The outage probability depends on the interference from license user (i.e., primary users) in a spectrum. We develop a simulation of...
In this paper we compare and justify the advantage of CNTFET devices over MOSFET devices in nanometer regime. Thereafter we have analyzed the effect of chiral vector, and temperature on threshold voltage of CNTFET device. After simulation on HSPICE tool we observed that the high threshold voltage can be achieved at low chiral vector pair. It is also observed that the effect of temperature on threshold...
Digital filters that provide variable frequency responses by controlling a small set of parameters are desired in numerous signal processing applications. In this paper, we present a new design technique to obtain variable lowpass, highpass, bandpass and bandstop frequency responses using a single lowpass prototype filter. The proposed variable digital filter (VDF) design technique employs first order...
Mobile phone embedded with recent technologies play a major role in day to day life of everyone in the world and thus shrinking the world with the well connected network. Yet there are people who have not been able to relish and benefit from the advanced technology. One among those deprived are the visually challenged people. Therefore an attempt has been made to develop a simple user friendly and...
The power of the music in evoking physical reactions has been well studied in literature for healthy and ill subjects. In this study we implemented a plethysmogragh data-acquisition system and analyzed the effect of emotion-evoking videos with audio and without audio on heart rate and average blood flow power. Our experiments showed that the audio plays the key role in variation of heart rate and...
This paper deals with electricity from photovoltaic system for cascaded multilevel inverter. The general function of multilevel inverter is to synthesis desired voltage from solar source. This inverter has advantageous of industrial applications. The use of converters will increase losses and cost in conventional methods. The proposed nine level multilevel inverter with solar energy using Pulse Width...
In this paper three different designs are discussed in term of their linearity. Proposed ADC consists of a linearity improved comparator scheme consist of CMOS standard cells (NAND, NOR) in place of Inverter based comparators which eliminate need of feature size variation. Instead of using traditional encoding strategy; Double Base Number System based encoder assembled with ADC to improve speed. This...
A new FFT architecture for real-valued signal is proposed using Radix-23 algorithm. It is based on modifying flow graph of the FFT algorithm such that it has both real and complex datapaths. A redundant operation in flow graph is replaced by imaginary part. Using folding technique RFFT architecture with any level of parallelism can be achieved. This RFFT architecture will lead to low hardware complexity...
Rare-earth type oxides (RE2O3) are the most stable rare-earth compounds, in which optically active rare-earth ions hold typically a trivalent state. Among all the rare-earth oxides, cubic phase Gd2O3 is an excellent luminescent host material because of its low phonon energy (phonon cutoff ≈ 600 cm−1), favorable chemical durability, good thermal stability, and the ability of being easily doped with...
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