Welcome to International Journal of Emerging Technologies in Engineering Research (IJETER)

Volume 1, Issue 2, July (2015)

S.No Tile & Authors Full Text
1 A Role of SMS Gateway Server in Mobile Communication
J.Sathiamoorthy, Dr.B.Ramakrishnan, Usha.M, R. Bhagavath Nishanth
Abstract – The Short Message Service (SMS) has become vital in today’s communication scenario.SMS services include delivering messages, mobile banking, reservation, payments etc. SMS follows a store and forward principle and its implementation is quite easy. Due to the major developments in technology the data sent through the SMS is very minimal. The mobile communication system uses SMS comprehensively for its text communication service. This service allows the exchange of short text messages between cellular phones. Financial services and transactions can now be conducted through mobile phones for which the SMS Gateway server is used.
2 Intensification of Trust by Analysis of flow Through Supersonic Nozzle using CFD Simulation
Anjappa S.B, Dr. M S Rajagopal, H V Harish
Abstract – The optimization design of a convergent divergent nozzle has been conducted to understand the phenomena of supersonic flow through it at various divergent angles and different throat to that of inlet diameter ratio .Here k-ε model has been used for flow analysis. The boundary conditions were specified according as for as the available experimental information. Mach number is found have an increasing trend with increase in divergent angle there by obtaining an optimal divergent angle. Here throat diameter to that of inlet diameter will be varied and analysis will be carried out. Based upon the Mach number we are optimizing the geometry. Further analysis has been carried at different altitude. ICEM CFD has been used for modeling and meshing and CFX has been used for solving.
3 Various Techniques for Frequency Offset Estimation in OFDM System: A Survey
Mandeep Mehra, Gagandeep Kaur Cheema
Abstract – The rapid growth in the wireless technology possess the need of high data rate transmission. This can be accomplished by using Orthogonal Frequency Division Multiplexing (OFDM). It is a particular case of multicarrier modulation (MCM), where high rate data stream is transmitted over low rate subcarriers. The system uses a number of carriers to transmit data simultaneously. The disadvantage of this system is its sensitivity to frequency offset and multipath delay spread as the spectra of OFDM signal is not strictly band limited which causes ICI (inter carrier interference) and ISI (inter symbol interference), resulting in loss of orthogonality between the subcarriers and thereby degrade the system performance. This paper presents various important techniques to estimate the frequency offset in OFDM system.
4 A Node Authentication Mechanism to Enhance the Security in VANETs
Ravinder Kaur, Dr. Neeraj Sharma
Abstract – As per today’s scenario, wireless networks are becoming more popular day by day as it is difficult for people to constrain their needs to wired networking. VANET works on the basis of real time system where the vehicles move as nodes and travel with a very high speed on roads. There are many security issues like authentication, tunnel attacks, intelligent system approach, collision detection, congestion avoidance etc. A number of methods have been proposed to deal with various issues in VANET. In this paper, an enhance level of security is implemented on the VANET system to reduce malicious activities into the network. Here the security is done by the authentication of individual node by some enhanced scenario which is based on the HASH value and steganography technique and eye retina sample. Each vehicle will be authenticate by centralize authentication and it helps to reduce the malicious activities.
5 Test Case Generation Using UML Diagram
Gurkarandesh Kaur, Parminder Singh
Abstract – Software Testing plays an important role in Software development because it can minimize the development cost. Any software two phases are considered, one is designing phase and other is testing phase. In designing phase system is designed which consists of all aspects of the system like its functions, operations and features. In testing phase test cases are generated to test the system in order to develop efficient software. UML is widely used in the software development, there consists of the designing and coding of the software. Designing phase is done with the help of the UML models, which consists of the sequence diagrams, activity diagrams, use case diagrams, state chart diagrams etc. After designing of the system, the next task is coding. Human resource consuming, the reduction of consumption is done with the help of the code generation automatically. This work mainly focus on the UML sequence diagram and state chart diagram as the model. We Propose a Technique for Test Case Generation using UML Models. An innovative approach of generating test cases from the combination of UML design diagrams have been discussed in this paper. Present work used an approach where sequence diagram and state chart diagram has been used to generate test cases. The test cases thus generated are suitable for dynamic testing of system.

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