M. K. Soni

Marquardt optimization method to design two-channel quadrature mirror filter banks

This paper proposes an efficient method for the design of two-channel, quadrature mirror filter (QMF) bank. The design problem is formulated to minimize an objective function, which is a linear combination of pass-band error and stop-band residual energy of the low-pass analysis filter of the filter bank, and the square error of the overall transfer function of the QMF bank at the quadrature frequency. A new algorithm has been developed to minimize the objective function by optimizing the filter tap weights by using Marquardt optimization method. Simulation results of the algorithm show that the performance of the proposed method is better than that of the already existing methods.

Trust based QOS protocol(TBQP) using meta-heuristic genetic algorithm for optimizing and securing MANET

This paper includes a prospective approach of developing a trust based QOS protocol (TBQP) using meta-heuristic genetic algorithm for optimizing and securing MANET. Genetic algorithm will help in maintaining Quality of Service(QOS) by selecting a fittest i.e. shortest route hence providing better performance. Intelligent optimization approaches or meta heuristic algorithms like, genetic algorithm(GA), neural networks(NN) based on artificial intelligence(AI), particle swarm optimization(PSO) technique and simulated annealing(SA) in the recent years have well consigned QOS issues. Ad-hoc networks face the primary defiance of restraining attacks against data, like, unauthorized data modification impersonation etc caused by malicious nodes in the network. This problem is tackled by trust application in our proposed approach which helps in securing ad-hoc networks.

Design of Simulink Model to denoise ECG signal using various IIR & FIR filters

Electrocardiogram ECG signal is usually corrupted by several artifacts and these must be removed before diagnosis. This paper therefore presents the design of various FIR filters like Kaiser, Rectangular, Hamming, Hanning, Gaussian and Bartllet window techniques and FIR Equiripple Filter. IIR filters like Butterworth, Chebychev I & II and Elliptic Filters are also explored to remove the artifacts in ECG signal. To verify the usability of designed filters, noisy ECG signal is generated by adding random noise, white noise and 50 Hz interference (hum) to the 100m.mat ECG data sample taken from MIT-BIH database. Signal to noise ratio (SNR) is calculated to compare the performance of different filtering methods using Simulink Model. Results obtained show that FIR Equiripple filter gives a SNR of 7.71 for a 3rd order filter and IIR Elliptic filter has SNR of for first order filter and are therefore recommended.

A Comparative Study for Secure Routing in MANET

the current era of wireless network, popularity of MANET is increasing at a very fast pace. Reason for this increased attention is the wide range of multimedia applications running in an infrastructure less environment. Because of the infrastructure less environment, limited power and dynamic topology it becomes very difficult to provide a secure environment in MANET. In this paper we are providing a detailed survey of different kind of attacks and proposed solutions for handling those attacks. This paper also gives a brief comparison of various protocols available for secured routing in MANET.

Cluster Based QoS Routing Protocol for MANET

783 Abstract—A Mobile Ad hoc NETwork (MANET) is a temporary network formed by a number of mobile nodes without a centralized administration or wired infrastructure. Because of its dynamic nature and random topology, MANET’s routing protocol is different from other networks. The dynamic nature of these ad hoc networks makes support of QoS(Quality of Service) a challenging and difficult task where nodes may leave and join the network or move around anytime. In this paper, we present a new optimized protocol named as “Cluster based QoS routing for MANET” (CBQR) in support of QoS in MANET.

SAERP: An energy efficiency Real-time Routing protocol in WSNs

The main aim of Wireless sensor networks for the current approaches is mostly focused on sensor communication and service strength. Nevertheless, the applications of Wireless Sensor Networks (WSNs) are dignified to make revolution in cooperation with different goals. These methods, mostly deficient for various uses that restricted developers to control systems necessities for supply power consumption, bandwidth operation, transmission expectancy and reliability. The motivation this paper is to improve dynamic network sustenance for the above critical issues, and it is an illustration for the energy control mechanism by proposing Simultaneous Attentive Energy Routing Protocol (SAERP). The adaptation of this protocol is to practically addresses on communication energy for every packet, based on its limitation that can handle power saving and least usage without omitting any packet limitations and covers the scalability, bandwidth and memory limitation constraints.

A Review on the Development of Rotman Lens Antenna

Rotman lenses are the beguiling devices used by the beamforming networks (BFNs). These lenses are generally used in the radar surveillance systems to see targets in multiple directions due to its multibeam capability without physically moving the antenna system. Now a days these lenses are being integrated into many radars and electronic warfare systems around the world. The antenna should be capable of producing multiple beams which can be steered without changing the orientation of the antenna. Microwave lenses are the one who support low-phase error, wideband, and wide-angle scanning. They are the true time delay (TTD) devices producing frequency independent beam steering. The emerging printed lenses in recent years have facilitated the advancement of designing high performance but low-profile, light-weight, and small-size and networks (BFNs). This paper will review and analyze various design concepts used over the years to improve the scanning capability of the lens developed by various researchers.

Sustaining security: Encircling wavelet quartered extrication algorithm for crypt-biometric perception

Biometric perception is considered to be the most neoteric technology for sustaining security in various systems by involving exclusive identification features. The attainment of biometric perception depends upon image procurement and biometric perception system. This proffered algorithm focuses on attaining image procurement as well as biometric perception by an effective exploitation of bi-orthogonal wavelets for encoding biometric information. The biometric system is enhanced by incorporating cryptographic features with it hence making a strong algorithm against various security breaches. Achieved simulated results surpasses the previous approaches and hence aims in development of more secure systems employing proposed crypt-biometric perception scheme.

Performance Comparison of AODV and DSR on-Demand Routing Protocols for Mobile Ad-Hoc Networks

A mobile ad-hoc network (MANET) is a collection of mobile wireless nodes, which communication to each other without any centralized control. These networks are characterized by a lack of infrastructure, and by a random and quickly changing network topology: thus the call for a strong dynamic routing protocol that can accommodate in such an environment is generated. In addition to this, routing protocols face many challenges like short battery backup, limited processing capability. This paper is an effort to study the performance of two on-demand routing protocols (AODV and DSR) in terms of number of routes selected, number of hop counts, number of RREQ packets and number of RREP packets. Simulation on QualNet shows that AODV compared with DSR reduces the number of hop count nodes, and AODV has less number of routes as compared to DSR, which helps AODV to be more efficient and less bulky. While comparing route request packets AODV is again better by having more number of RREQ packets as compared to DSR which made it more efficient in finding a new route and each time in replacing a stale link. General Terms This paper is effort to study performance comparison of two on-demand routing protocols for mobile ad-hoc networks with the help of QualNet simulator.

Secure Routing in MANET through Crypt-Biometric Technique

A dynamic network self configuring and multi-hop in nature without having any fixed infrastructure is called a mobile ad-hoc network(MANET).The main drawback of such types of networks is the occurrence of various attacks such as unauthorized data modification impersonation etc which affect their performance. Biometric perception is specified as the most novel method to protract security in various networks by involving exclusive identification features. The attainment of biometric perception depends upon image procurement and biometric perception system. Simulation as well as experimental results signifies that this proposed method achieves better performance parameters values for various mobile ad-hoc networks.