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Sharma S.,Electronics and Communication Engineering | Kumar R.,SSIET | Vijay R.,Banasthali University
Proceedings on 2015 1st International Conference on Next Generation Computing Technologies, NGCT 2015 | Year: 2015

A semi-circular slot antenna is proposed that has the ability to switch the frequency to ten different bands, one at a time, between the wide frequency range of 5.35 GHz and 9.36 GHz. To achieve frequency re-configurability, switching of eight RF p-i-n diodes which are placed along the slot length is done in various combinations. Frequency tuning ratio of about 1.751 can be achieved using this design. Results such as return losses, gain, bandwidth and radiation patterns are presented in this paper. © 2015 IEEE.


Sharma S.,Electronics and Communications Engg | Kumar R.,SSIET | Vijay R.,Banasthali University
International Conference on Soft Computing Techniques and Implementations, ICSCTI 2015 | Year: 2015

An Antenna having a triangular shaped slot is proposed that has the ability to switch the frequency to thirteen different bands, one at a time, between the frequency 2.11GHz to 3.9GHz. To achieve frequency re-configurability, the length of inclined arms of the triangular slot is varied by use of six PIN diodes which are placed along the perimeter of the triangular slot. Frequency tuning ratio of about 1.85:1 can be achieved using this design. Results such as return losses, gain, bandwidth and radiation patterns are presented in this paper. © 2015 IEEE.


Singh H.P.,National Institute of Technology Jalandhar | Singh S.,National Institute of Technology Jalandhar | Singh J.,M D Colllge | Khan S.A.,SSIET
Journal of Network and Computer Applications | Year: 2014

The Internet has revolutionized the telecommunication systems by supporting ne applications and services. Voice over Internet Protocol (VoIP) is one of the most prominent telecommunication services based on the Internet Protocol (IP). The signal quality of the VoIP system depends on several factors such as networking conditions, coding processes, speech content and error correction schemes. The ork in the present paper revieed these issues, used for providing toll-quality communication service to the users over VoIP system. From the very beginning of transferring the voice data over packet sitched networks, the journey of the packet based communications to modern VoIP and advancements to improve the service of the VoIP system has been summarized in this ork. © 2013 Elsevier Ltd.


Sharma N.,MMEC | Sharma S.,SSIET
Proceedings of 2011 International Conference on Computer Science and Network Technology, ICCSNT 2011 | Year: 2011

A mobile ad hoc network (MANET) is a collection of mobile nodes which are able to communicate with each other without relying on predefined infrastructures or central administration. Due to their flexibilities and easy deployment, MANET can be applied in situation where network infrastructures are not available. MANET employs routing to provide connectivity for mobile nodes that are not within direct wireless transmission range. There are different protocols for handling the routing in the mobile environment. In this paper, Ad-Hoc On-Demand Distance Vector (AODV) and Optimized Link State Routing (OLSR), protocol is simulated in various mobile scenarios with different traffic patterns. The protocols are compared with respect to reliability and routing overhead and end to end delay. © 2011 IEEE.


Sharma S.,Electronics and Communications Engg | Kumar R.,SSIET
Proceedings on 2015 1st International Conference on Next Generation Computing Technologies, NGCT 2015 | Year: 2015

An Antenna is proposed with its ground plane having a hexagonal shaped slot which is capable of switching the frequency to eight different bands, one at a time, between the frequency range of 2.3GHz and 3.8GHz. To achieve frequency re-configurability, the length of stub placed on top end of hexagonal slot is varied by use of four PIN diodes. Frequency tuning ratio of about 1.65:1 can be achieved using this design. Results such as return losses, gain, bandwidth and radiation patterns are presented in this paper. The advantage of the design is that it requires simple biasing circuit and no DC blocking capacitors are required. © 2015 IEEE.


Mishra R.,Dr. C.V. Raman University | Singhai S.K.,Government Engg College | Sharma M.,SSIET
Proceedings - International Conference on Electronic Systems, Signal Processing, and Computing Technologies, ICESC 2014 | Year: 2014

Various methods of automatic shot boundary detection have been proposed and claimed to perform reliably. Although the detection of edits is fundamental to any kind of video analysis since it segments a video into its basic components, the shots, only few comparative investigations on early shot boundary detection algorithms have been published. A vast number of proposed techniques exist for shot boundary detection but the major criticisms to them are their inefficiency and lack of reliability. The reliability of the scene change detection stage is a very significant requirement because it is the first stage in any video retrieval system. This paper gives a comparative study of Block Matching Algorithm (BMA) and Complex Wavelet Transform (CWT) algorithm. BMA uses motion vectors to detect shot transition in videos and CWT uses edges of the objects, are invariant to illumination changes. The algorithm performance is measured in terms of hit rate, number of false hits, and miss rate for hard cuts, fades, and dissolves over a large and diverse set of video sequences. © 2014 IEEE.


Mishra R.,University of Kota | Singhai S.K.,Government Engg College | Sharma M.,SSIET
Proceedings of the 2013 3rd IEEE International Advance Computing Conference, IACC 2013 | Year: 2013

Many algorithms have been proposed for detecting video shot boundaries and classifying shot and shot transition types. This paper presents a novel approach to processing encoded video sequences prior to complete decoding. Detection of gradual transition and the elimination of disturbances caused by illumination change or fast object and camera motion are the major challenges to the current shot boundary detection techniques. These disturbances are often mistaken as shot boundaries. Therefore, it is a challenging task to develop a method that is not only insensitive to various disturbances but also sensitive enough to capture a shot change. To address these challenges, we propose an algorithm for shot boundary detection in the presence of illumination change, fast object motion, and fast camera motion. This is important for accurate and robust detection of shot boundaries and in turn critical for high-level content based analysis of video. First, the propose algorithm extracts structure features from each video frame by using dual-tree complex wavelet transform. Then, spatial domain structure similarity is computed between adjacent frames. The declaration of shot boundaries are decided based on carefully chosen thresholds. Experimental study is performed on a number of videos that include significant illumination change and fast motion of camera and objects. The performance comparison of the proposed algorithm with other existing techniques validates its effectiveness in terms of better Recall & Precision. © 2013 IEEE.


Gupta A.,SDD Institute of Engineering | Kaler R.S.,Thapar University | Singh H.,SSIET
Optik | Year: 2013

In this paper, the performance of proposed optical burst assembly technique is experimentally investigated under self-similar traffic and traditional scheduling techniques to find the optimal combination of burst assembly and burst scheduling techniques for superior performance of the optical burst switched (OBS) networks. The performance of the newly introduced variable time burst assembly (VT-BA) technique is evaluated in terms of packet loss rate, traffic sent, end to end delay and burst loss rate. Simulation results reveal that the proposed burst assembly algorithm performs well amid various scheduling techniques but CTBR (constant time burst resequencing) and Min-SV (minimum starting void) scheduler gives better compatibility with VT-BA as compared to their other counterparts for most of the parameters under consideration. It is observed that the above combination dramatically decreases the overall burst loss rate while keeping the end-to-end delay in a feasible range. © 2012 Elsevier GmbH.


Bera S.,SSIET | Sharma M.,SSIET | Sikhar S.S.,SSIET | Dwivedi A.,National Institute of Technology Raipur
Proceedings of the 2016 IEEE International Conference on Wireless Communications, Signal Processing and Networking, WiSPNET 2016 | Year: 2016

This paper presents a blind JPEG steganalysis technique, which outperforms other JPEG steganographic schemes i.e. Jsteg, F5, Outguess and using discrete wavelet transform. The variations caused by JPEG steganography is enhanced by calculating the different DWT 2-D arrays along all the four directions. There exists a relationship among the four nearest neighbor pixels of JPEG image. This fact is explored for the improvement in detection purpose. The two step markov's process is implemented to model this difference DWT-2-D arrays so that higher order statistics can be utilized for steganalysis. In this paper, these higher order statistics are treated as features which are calculated from the calibrated and predicted difference DWT-2D arrays image coefficients. The Support Vector Machine is implemented for the classification purpose. The performance parameters are evaluated for the detection method for all the mentioned hiding techniques. It is the finding that the detection performance gets increased with the proposed scheme. © 2016 IEEE.


Gupta U.,IKG PTU | Randhawa R.,Punjabi University | Singh H.,SSIET
Optoelectronics and Advanced Materials, Rapid Communications | Year: 2016

We investigate the effects of Rayleigh backscattering in a RSOA-based WDM. The results show that the effects of Rayleigh-induced penalty on the gain of the RSOA and the lengths of drop fibers using MZI switching. In this paper, we propose and demonstrated a novel Rayleigh backscattering (RB) noise mitigation scheme based on MZI switching for wavelength division multiplexing. Reflective semiconductor optical amplifier (RSOA) are used in the WDM network for suppressing the mitigation and noise. With MZI switching, interference generated by carrier RB noise at low frequency region is eliminated successfully. Transmission performance for different parameters over 165 km universal fiber has been simulated and the optical-signal-to-Rayleigh-noise-ratio (OSRNR) can be reduced to 15 dB with MZI switching. © 2016, National Institute of Optoelectronics. All rights reserved.

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