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International Journal of Reconfigurable and Embedded Systems (IJRES)

IJRES
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Published by Institute of Advanced Engineering and Science

ISSN : 20894864 EISSN : 27222608 DOI : -

Core Subject : Economy,

Economics, Econometrics & Finance

The centre of gravity of the computer industry is now moving from personal computing into embedded computing with the advent of VLSI system level integration and reconfigurable core in system-on-chip (SoC). Reconfigurable and Embedded systems are increasingly becoming a key technological component of all kinds of complex technical systems, ranging from audio-video-equipment, telephones, vehicles, toys, aircraft, medical diagnostics, pacemakers, climate control systems, manufacturing systems, intelligent power systems, security systems, to weapons etc. The aim of IJRES is to provide a vehicle for academics, industrial professionals, educators and policy makers working in the field to contribute and disseminate innovative and important new work on reconfigurable and embedded systems. The scope of the IJRES addresses the state of the art of all aspects of reconfigurable and embedded computing systems with emphasis on algorithms, circuits, systems, models, compilers, architectures, tools, design methodologies, test and applications.

Arjuna Subject : -

Articles 9 Documents

Search results for , issue "Vol 7, No 3: November 2018" : 9 Documents clear

Energy and Area Effective Hardware Design of Lifting Approach Discrete Wavelet Transform Khamees Khalaf Hasan; Ibrahim Khalil Salih; Abdumuttalib. A. Hussen
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

This paper presents low power Discrete Wavelet Transform DWT architecture, comprising of forward and inverse multilevel transform for 5/3 lifting scheme LS based wavelet transform filter. This LS filter consists of integer adder units and binary shifter rather than multiplier and divider units as in the convolution based filters; hence it is more adaptable to energy efficient hardware performance. The proposed architecture is described using the VHDL based methodology. This VHDL code has been simulated and synthesized to achieve the gate level building design which can be organized to be effectively developed in hardware environment. The Quartus II 9.1 software synthesis tools were employed to implement 2D-DWT VHDL codes in Altera Development board DE2, with Cyclone II FPGA device. The proposed LS wavelet architectures can be attained by focusing on the physical FPGA devices to considerably decrease the needed hardware expenditure and power consumption of the design. The utilized logic and register elements of the architecture are 127 slices (only 1%) usage from 33216 and the architecture consumes only 0.033 W. Simulations were performed using different sizes of gray scale images that authenticate the proposed design and attain a speed performance appropriate for numerous real-time applications.

High Speed Area Efficient FPGA Implementation of AES Algorithm P. B. Mane; A. O. Mulani
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

Now a day digital information is very easy to process, but it allows unauthorized users to access this information. To protect this information from unauthorized access, Advanced Encryption Standard (AES) is one of the most frequently used symmetric key cryptography algorithm. Main objective of this paper is to implement fast and secure AES algorithm on reconfigurable platform. In this paper, AES algorithm is designed with the aim to achieve less power consumption and high throughput. Keys are generated using MATLAB and remaining algorithm is designed using Xilinx SysGen, implemented on Nexys4 and simulated using Simulink. Synthesis result shows that it consumes 121 slice registers and its operating frequency is 1102.536 MHz. Throughput of the overall system is 14.1125 Gbps.

An Optimal Design of CMOS Two Stage Comparator Circuit using Swarm Intelligence Technique Sasikumar Sasikumar; Muthaiah Muthaiah
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

A swarm intelligent based optimization technique named as Flower pollination algorithm (FPA) is applied for the design of the CMOS two stage comparator circuit. The basic idea of FPA mimics the flower pollination process of flowering plants. The input control parameters of FPA improve the exploration and exploitation capabilities of optimization problem. This paper presents the design of a CMOS two-stage comparator circuit using simulation based model called swarm intelligence technique. Simulation results shows that the proposed method is capable to determine the transistor sizes and bias current values of the CMOS comparator. The results obtained from the FPA improved the design performance of comparator in terms of power consumption, MOS transistor area and gain. To investigate the efficiency of proposed approach, comparisons have been carried out with differential evolution (DE) and harmony search (HS) algorithm based circuit design. The performances of FPA based comparator design are better than the previously reported works

Design Considerations of Reconfigurable CMOS Mixers for Multi-Standard Communication Receiver Systems Manoj Kumar Vishnoi; Satya Sai Srikant
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

This paper has been carried out the study of reconfigurable wide-band mixers that can do the frequency conversion and gain variation standards with low noise and high linearity used in multi-mode and multi-standard receivers. Over the last few years reconfigurability has become very popular in adopting technology to meet the wideband wireless communication specifications that is compatible with multi-standards like GPS (1.57 GHz), WLAN (2.4 GHz - 5.9 GHz), Bluetooth (2.402 – 2.483 GHz) and ZigBee (0.784 - 0.915 GHz) in low power consumption environment. The reconfigurability can be achieved between low and high band modes through power switching in RF frequency mixers. It can be achieved by flipping the input RF signal between gate and source terminal of input transistor and altering the trans-impedance stage output. With the concept of reconfigurable transistor pair with open and short circuit stubs, one can not only find the configurable gain with center frequencies 7.355, 8.65, 11.35 and 12.65 GHz but also with high power efficiency. Tow Thomas Bi-Quad Topology other than the traditional current commuting technique for the second order trans-impedance amplifier stage, works as a current mode filter over a tunable bandwidth. The active Gilbert mixers are used widely in most of communication system, due to its significance gain, perfect isolation, and linearity in response.

Design And Analysis Of CMOS Low Noise Amplifier Circuit For 5-GHz Cascode and Folded Cascode In 180nm Technology T. Kanthi; D. Sharath Babu Rao
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

This paper is about Low noise amplifier topologies based on 0.18µm CMOS technology. A common source stage with inductive degeneration, cascode stage and folded cascode stage is designed, simulated and the performance has been analyzed. The LNA’s are designed in 5GHz. The LNA of cascode stage of noise figure (NF) 2.044dB and power gain 4.347 is achieved. The simulations are done in cadence virtuoso spectre RF.

Design and Implementation of a New Architecture of a Real-Time Reconfigurable Digital Modulator (DM) Into QPSK, 8-PSK, and 16-PSK on FPGA Walder Andre; Olivier Couillard
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

One of the prerequisites of Electronic Warfare (EW) is to have the means to provide secure point-to-point wireless data and voice communications with other ground stations. New technologies are giving rise to bigger information security threats. This situation illustrates the best the urgency of reducing the development and upgrade time of EW systems. Previous works suggest that digital systems are the best candidates for this purpose and therefore form the backbone of modern Electronic Warfare. Indeed, Digital Modulation (DM) techniques are widely used in modern wireless communication systems. This is largely due to their high resistance to noise and their high transmission capacity that can be achieved through data multiplexing. In this article, a new reconfigurable architecture of a Phase Shift Keying (PSK) modulation is described. The latter can be configured in real time to produce the following modulation schemes: QPSK, 8-PSK, and 16-PSK without having to regenerate the FPGA configuration bits. This action can be done by software via programming or manually using a DIP switch. The proposed design is implemented on the Xilinx xc7k325tfbg900 FPGA using the Genesis 2 development board. The Vivado Physical Design Automation tool indicates a power consumption of 303 mW by the on-chip circuit. The experimental results are in agreement with the simulations.

Real time FPGA Implementation of PWM Chopper Fed Capacitor Run Induction Motor N. Murali; V. Balaji
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

This paper presents the performance enhancement of capacitor run induction motor by pulse width modulated AC chopper.The phase angle control faces severe shortfall in the performance improvement for larger triggering angles. In this paper the comparison of phase angle control and sinusoidal pulse width modulation technique is encountered for effective speed control of single phase capacitor run induction motor. The necessary parameters are taken into considerations are higher efficiency, lesser total harmonic distortion and high input power factor. The results are compared by using the simulations using matlab Simulink environment. The validation of result in hardware is implemented using Field programmable gate array for sinusoidal pulse width modulation technique.

Design and Implementation of LCG-Trivium Key Stream Generator into FPGA Tchahou Tchendjeu A. E; Tchitnga Robert; Fotsin Hilaire B
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

This paper presents the Design and implementation into Field ProgrammableGate Array (FPGA) of a combine stream cipher and a simple linear congruential generator circuit to produce key stream. The LCG circuit is used to produce initialization vector (IV) each 264 clock cycle to the cipher trivium in other to strengthen the complexity of the cipher to known attacks on trivium. The LCGTrivium is designed to generate 2144 bits of keystream from an 80-bits secret and a variable 80-bits initial value. To implement the LCG-Trivium on FPGA, we use VHDL to build a simple LCG and Trivium and a state machine to synchronize the functioning of the LCG and Trivium. The number of gates, memory and speed requirement on FPGA is giving after analysis. The design is simulated, synthesized and implemented in Quartus II 10.1, ModelSim-Altera 6.5 and Cyclone IV E EP4CE115F29C7N.

New Optimized Reconfigurable ALU Design Based on DG-CNTFET Nanotechnology Houda Ghabri; Dalenda Ben Issa; Hekmet Samet
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol 7, No 3: November 2018
Publisher : Institute of Advanced Engineering and Science

The heart of the microprocessor and responsible for the execution of logical and arithmetic operations, the arithmetic and logical unit is constantly optimized. The performance is improved to allow the development of more powerful and smaller circuits. This paper describes simple ALU but contains the essentials functions. It is a reconfigurable ALU based on double-gate carbon nanotube field effect transistor (DG-CNTFETs). This transistor has an interesting property, it can switch from p- to n- type behavior and vice-versa dynamically. This opens the opportunity for building novel and complex functions in fine-grain reconfigurable logic inaccessible to MOSFETs and reaching a good performance levels. In literature there are several problems related to signal quality. In this paper, we will propose a new solution that allows us to improve the quality of the output signal without affecting the number of transistors used. This improves the overall performance of ALU. We will show the improvement in signal level and quality. First, an overview of carbon nanotube field-effect transistor (CNTFET) and state of the art Reconfigurable ALU based on DG-CNTFET is given. Then an explication of signal integrity issues of the actual Reconfigurable DG-CNTFET cell is done. After we will present and explain the proposed solution. The solution is first applied on the cnt_9T circuit then will show its effect on the ALU. Finally, a performance comparison is made.

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