i-manager's Journal on Electronics Engineering (JELE)


Volume 2 Issue 3 March - May 2012

Research Paper

Secure Data Transmission Using Audio Steganography

K. Sakthisudhan* **
* Assistant Professor, Bannari Amman Institute of Technology, Anna University, India.
** Senior Lecturer, Bajrang Engineering College, Anna University, India.
*** P.G Scholar, Bannari Amman Institute of Technology, Anna University, India.
**** Professor & Head of CSE, Bannari Amman Institute of Technology, Anna University, India.
K. Sakthisudhan, S. Gayathri Priya, P. Prabhu and P. Thangaraj (2012). Secure Data Transmission Using Audio Steganography. i-manager’s Journal on Electronics Engineering, 2(3), 1-6. https://doi.org/10.26634/jele.2.3.1763

Abstract

In present day to day life, effective data hiding methods are needed due to attack made on data communication. This paper presents the technique for the above requirement. In this proposed method, secret message in the form of audio file is embedded within another carrier audio file (. wav) .In the transmitter end the output will be similar to the carrier with a secret message embedded inside. The hacker will be blinded by the transmitted signal. At the receiver end the original message can be retrieved without any loss. The entire proposed system is simulated and their corresponding waveforms prove the effectiveness of this method.

Research Paper

FIR Filter Approach for Gene Prediction

Renu Sharma* **, Neeraj Sharma***
* Assistant Professor, Dept of ECE, R.P. Inderaprastha Institute of Tech, Haryana, India.
** Assistant Professor, Dept of ECE, Maharishi, Markaneshwar Engineering College, Mullana, India.
*** Assistant Professor, Dept of Mechanical Engineering, R.P. Inderaprastha Institute of Tech, Bastara, Karnal, Haryana, India.
Renu Sharma, Ajay Kaushik and Neeraj Sharma (2012). FIR Filter Approach For Gene Prediction. i-manager’s Journal on Electronics Engineering, 2(3), 8-15. https://doi.org/10.26634/jele.2.3.1764

Abstract

Gene prediction is a very challenging problem in the field of medical science. Gene constitute of exons and introns. Exons are responsible for encoding of proteins. The main target of gene prediction is to identify the exons. Gene identification can be done on the basis of property of codon structure that exons exhibits period-3 behavior. To identify the period-3 property, signal processing is used which uses numerical indicator sequences to process the data. This is the reason to convert the characters sequences of DNA sequences into numerical sequences (Binary indicator sequence, paired indicator sequence, real indicator sequence) and then pass through the FIR filter. The present research shows that the FIR filter gives accurate results for selected frequency range.

Research Paper

Harmonic Optimization of Multilevel Inverters Using Hybrid GA/PSO

Surya Kalavathi M* **
*-** Department of Electrical & Electronics Engineering, Vivekananda College of Technology for women, Namakkal, Tiruchengode.
*** Department of Electrical & Electronics Engineering, Bannari Amman Institute of Technology, Erode, Sathyamangalam.
S. Suriyakala, K. Mahendran and B. Indhumathy (2012). Harmonic Optimization Of Multilevel Inverters Using Hybrid GA/PSO. i-manager’s Journal on Electronics Engineering, 2(3), 16-21. https://doi.org/10.26634/jele.2.3.1765

Abstract

This paper presents Hybrid GA/PSO optimization (HGAPSO) technique applied to determine the switching angles of a cascaded multilevel inverter. This technique eliminates specified higher order harmonics while maintaining the required fundamental voltage. This technique can be applied to multilevel inverters with any number of levels. As an example, in this paper an eleven-level inverter is considered and the optimum switching angles are calculated offline to eliminate the 5th, 7th, 11th and 13th order harmonics. The simulation is carried out in MATLAB/Simulink package. Results show that the proposed method does effectively eliminate a great number of specific harmonics and the output voltage is resulted in low total harmonic distortion (THD).

Research Paper

Low Power Reconfigurable VLSI Architecture For FIR Filters

S. Karthick* , Nirmal Kumar**, S.Valarmathy***
*-**-*** Department of Electronics & Communication Engineering, Bannari Amman Institute of Technology, Sathyamangalam, India.
S. Karthick, R.Nirmal Kumar and S.Valarmathy (2012). Low Power Reconfigurable VLSI Architecture For FIR Filters. i-manager’s Journal on Electronics Engineering, 2(3), 22-29. https://doi.org/10.26634/jele.2.3.1766

Abstract

Reconfigurability and low complexity are the two key requirements of finite impulse response (FIR) filters. Two new efficient reconfigurable architectures namely constant shift method (CSM) and programmable shift method (PSM) of low complexity are used for design of higher order finite impulse response (FIR) filters. The FIR filter architecture is capable of operating for different wordlength filter coefficients without any overhead in hardware circuitry. The CSM results in higher speed whereas the PSM results in lower area. These methods are based on the binary common subexpression elimination (BCSE) algorithm using canonical signed digit (CSD) representation of coefficients. The CSD representation is widely used in implementing multiple constant multiplication because it guarantees the least number of additions for a given constant multiplication. Hence the CSM architecture is used for high speed applications and the PSM architecture is used in applications where area and power have to be minimized. The experimental results are synthesized and major parameters like area , delay, power are compared for both CSM and PSM architecture using Xilinx ISE 8.1tool.

Research Paper

Investigations of Current Mechanisms and Electronic Properties of Schottky Barrier Diode

Wagah F. Mohamad* **
* Communications & Electronics, Department of Faculty Engineering, Philadelphia University, Amman, Jordan.
Wagah F. Mohammad and Nada Nabil Khatib (2012). Investigations Of Current Mechanisms And Electronic Properties Of Schottky Barrier Diode. i-manager’s Journal on Electronics Engineering, 2(3), 30-36. https://doi.org/10.26634/jele.2.3.1767

Abstract

The energy band diagram and space charge regions of Schottky barrier (SB) solar cells are different from normal pn solar cells.  Many facts and theories must be studied and developed to assist understanding and implementing SB solar cells.  Few samples of SB devices were prepared by thermal deposition under vacuum then tested and studied carefully.  An interfacial layer was introduced between metal and semiconductor.  I-V and C—V are measured, drawn and discussed in details.  The current transportation mechanism of the prepared samples is found to be of thermal mechanism type.  The current transportation depends on the potential barrier height.  From C— V characteristics, it is found that the potential barrier height is decreased as the interfacial oxide becomes thicker.

Research Paper

Parametric Influence on Noise in High Electron Mobility Transistor LNA

V. J. K. Kishor* , Kannan .V**
* Research Scholar, Sathyabama University, Chennai, India.
** Principal, Jeppiaar Institute of Technology, Sri Perumpdur, India.
V.J.K. Kishor Sonti and V. Kannan (2012). Parametric Influence On Noise In High Electron Mobility Transistor LNA. i-manager’s Journal on Electronics Engineering, 2(3), 37-42. https://doi.org/10.26634/jele.2.3.1768

Abstract

In this paper, parametric influence on noise in HEMT LNA designed using FR4 substrate was analyzed. At higher frequencies of operation high electron mobility transistor designs are often influenced by shot noise and this shot noise is depended on different parameters of the device. This design is carried out at a centre frequency of 5.8GHz and critical parameters like gate resistance, transconductance; gate source biasing values influence on noise immunity of this design is analyzed in the frequency range of 1GHz to 10GHz. Variation of Maximum Gain and Noise Figure w.r.t to frequency were obtained for different parametric values. Obtained results had given better understanding of the noise influence on the design performance under different constraints pertained to parameter variation. These observations are in greater agreement with the theoretical facts. This work is carried out using ADS simulation software.