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Random Pulse Position Pulse Width Modulation (RPPPWM) scheme can achieve the distributed harmonic spectrum of both voltage and current. This results in reduction of acoustic noise and mechanical vibrations. The gate signals are generated by comparing sine wave and pseudorandom bits (PRBS). The PRBS random bit generator is implemented using a shift register. In this paper, an induction motor driven...
The usage of systems has been increased rapidly; Due to the busy schedule of the people everyone doing transactions in internet. Authentication is playing a major role in the internet to do authorised transactions. When we are doing transactions in network hackers and intruders would like to hack our system. In this paper we implemented a new scheme which will provide the authentication for the users...
The Silver code has been proposed as a 2 × 2 space time block code that accomplish the optimal diversity — multiplexing gain tradeoff for a multiple antenna system in Cognitive Radio Network. In this paper the decoding methodology for the Silver code is analyzed, followed by performance analyzing with the Alamouti code and V-BLAST in Rayleigh fading environments. Simulation results show that the Silver...
The cloud provides a flexible environment for customers to host and process their information. Many applications dealing with massive data and complex queries are routed to the cloud. The response time depends on query optimization and resource scheduling. There are several techniques to optimize the query and resource scheduling but the information about the query is not stored i.e. the frequent...
The cloud provides a flexible environment for customers to host and process their information. Many applications dealing with massive data and complex queries are routed to the cloud. The response time depends on query optimization and resource scheduling. There are several techniques to optimize the query and resource scheduling but the information about the query is not stored i.e. the frequent...
This paper proposes an integrated single-stage ac-to-dc light-emitting-diode (LED) driver circuit. A buck-boost power factor (PF) corrector is integrated with a flyback converter. A recycling path is built to recover the inductive leakage energy. The proposed circuit provides high PF and low total harmonic distortion. It also provides high conversion efficiency and low switching voltage spikes. An...
Hadoop MapReduce is one of the largely used platforms for large scale data processing. Hadoop cluster has machines with different resources, including memory size, CPU capability and disk space. This introduces challenging research issue of improving Hadoop's performance through proper resource provisioning. The work presented in this paper focuses on optimizing job scheduling in Hadoop. Workload...
Optimization of communication among sensors to serve data in short latency and minimal energy is necessitated for some of the wireless sensor network applications. For a self-organizing wireless sensor network Genetic Algorithm based multi-objective methodology is developed and is used as a technique in the selection of sensor nodes which play special roles in running caching and request forwarding...
There is a huge effect of Data Exploration all over the world due to technology advancement, compilation and storage technologies. Huge amount of agricultural data are collected and stored in databases through manual or automated system. With the volume of data being increased, there is an increase in the space between the data stored and the data being analyzed, on application of appropriate data...
The paper presents the design of the program counter for low power and high performance. Two approaches namely, 1) finite state machine logic based and 2) incrementer based logic have been employed. The designs have been implemented and the comparison between the two design methodologies has been made. The finite state machine logic based design uses flip flops and multiplexers, while the incrementer...
Online reputation systems play a significant role in decision support during internet mediated service provision. With the fast development of online reputation systems in various social networks, operations against such systems are growing rapidly. It has been considered as an important but most difficult problem. In this paper, we propose a defense solution TTAUCA [Temporal, Trust And User Correlation...
STUDSAT - 2 is a Student Satellite Program carried out by the undergraduate students from seven engineering colleges from the state of Karnataka, India. STUDSAT-2 is India's First Twin Satellite Mission which aims to demonstrate Inter-Satellite Communication and improving temporal resolution by taking images of the same part of the earth by the Twin Satellites. STUDSAT-2 consists of two Nano Satellites...
A microstrip-fed great arc shaped dipole antenna is proposed and designed for ultrawideband communications. The antenna has large bandwidth covering the frequency band from 3.8 to 9.4 GHz. With simple and proper modification of the radiation patches, a frequency notched performance is obtained at the frequencies 5.8 and 7.5GHz. This paper aims at the performance at 5GHz ISM band. The proposed antenna...
Multilevel inverters (MLI) are plays an important role in industrial power applications. Generally conventional MLIs are categorized into diode clamped, flying capacitor clamped and cascaded H bridge type. They are having a more number of switches with less number of levels or more. Due to this it can provides a more switching losses and less accuracy. And also it can require more drivers for turn...
Most of the research work has shown that homogeneous ad hoc networks have poor performance, connectivity and scalability. Heterogeneous sensor network (HSN) consists of physically different types of sensor nodes. The feasibility of implementing elliptic curve cryptography (ECC) in HSN is simulated in this approach. It utilizes elliptic curve Diffie-Hellman (ECDH) by using pseudo-random polynomial...
In this paper, we address the security of routing protocols. Internet routing protocols are subject to attacks in the control plane as well as the data plane. In the control plane, a routing protocol, e.g., BGP, OSPF, exchanges routing state updates and enables routers to compute the best paths towards various destinations. During this phase, an attacker can modify or inject malicious control messages...
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