Indexing

Abstract: In WSN, sensor nodes have limited energy budget therefore this paper mainly focus on power saving by using the docition paradigm. Docition is a new teacher-student paradigm proposed to improve cognitive radio. Although it improves the infrastruc¬ture based networks it has a weakness in case of ad-hoc mobile net¬works. The energy constraints and the total mobility of the net¬work complicate the selection of the appropriate teacher for a student. By selecting the wrong teacher, there is a high probabil¬ity that the taught information may be faulty, and thus the student radio diverges from the best state. This causes a high amount of energy loss, though the most important concern in ad-hoc networks is energy limitation. In this paper, we propose a dynamic docition for teacher selection based on the auto-correla¬tion degree of the teacher’s candidate environment and the cross-correlation degree between the teacher candidate and the student environments. We validate our approach in the context of coexist¬ence between WSN and WiFi. The WSN detects, models and exploits the unused time slots in the electromagnetic spectrum, left by WiFi, using dynamic docition. The simulation results show that the use of dynamic docition outperforms the existing docition in mobile networks. The improvements are shown through the low link overhead percentage (20% less overhead) and the low packet loss ratio (30% improvement).

Abstract: Data gathering in wireless sensor network (WSN) is a crucial field of study and it can be optimized various algorithms like clustering, aggregation, and cryptographic technique in order to reliably transfer data between sensor and sink. But these techniques do not provide an optimized data gathering wireless sensor network because of the fact that they do not leverage the advantages of various techniques. Our problem definition is to create a reliable data gathering wireless sensor network which ensures good energy efficiency and lower delay as compared to existing techniques.

Abstract: Insecurity and crime constitute some of the major problems facing our society today. People live with fear of being attacked by thieves. Despite all the effort, resources and time this lead to the development of tools that will reduce crime rates and make the world a safer place to live, these problems are still on the increase. These gave rise to the need for an increasing development in the technology of alarm systems.

Abstract: In today’s smart world where the man is rapidly proceeding towards development or advancement of various aspects, considering each and every point of possibility for the resulting outcome, we are forced as well as curious to measure quantities surrounding us. Therefore, we came up with an idea of significant relevance to measure and determine important quantities of physics namely temperature, humidity and physical moisture. The necessity of measurement of the above parameters in various fields like construction, industries, space and research compelled us to design this instrument with huge dedication. Its simultaneous measurement of all three quantities namely temperature, humidity and moisture makes it an outstanding instrument in the industry as well as households.
Keywords: A complete humidity sensing device for atmosphere, soil and other material using 8051 microcontroller and also detect moisture and temperature.
Title: Humidity Sensing Device for Soil, Atmosphere and Other Material with Temperature Intuit

Abstract:  Diamond and Graphite both are natural allotropes of carbon. Graphene is a substance composed of sp2 hybridized carbon atoms that are similar to graphite and arranged in a regular hexagonal pattern. Graphene has astounding physical properties such as high electronic conductivity, excellent mechanical strength and thermal stability.  It is capable to maintain its strength up to 3,600°C. It is transparent, high super hydrophobicity at nanometer scale , 100 times stronger than steel with  high current density. These unique properties make graphene an interesting candidate for a number of applications currently under development, as for instance Li-ion batteries, transparent touch screens, light weight aircrafts or transistors.
Amongst the synthesis techniques, chemical vapor deposition has proved promising result for advance devices and  for numerous applications where  high-quality graphene films, High purity, fined grained and low structural defects film is required. CVD process is normally conducted below the  atmospheric pressure and relatively lower temperatures , less than 1000°C. Pressure of LPCVD is 10-1000 Pascals.

Abstract: Latest technological development in VLSI design permits more functions integrated in a single chip. Multipliers are crucially important building structures for advanced computing and as a part of digital processing system. These logic and arithmetic structures should have to be speedy as well as precise enough so that number of such circuits can be integrated along a single chip. Considering this there is advancement in IC fabrication and design is still going on. In VLSI circuit area, power and delay are the parameters which are considered as design parameters. However, there exists a trade-off amongst them for an optimal design. Multipliers have very crucial and important part in designing of microprocessors, multimedia system and digital signal processors etc. Almost 15% of total IC power is consumed by multiplication unit alone. So it becomes very important to have a well organized design in terms of performance, area and its processing speed of multipliers and same as for Booth multiplication algorithm which gives a fundamental platform for such improvements in the designing of high speed multipliers with great performance.
Booth algorithm gives such an efficient encoding scheme of the bits through first steps of the multiplication process. This work is based on configurable logic for 16-bit Booth multiplier using Radix-2 and Radix-4 Method. Booth multiplier can be configured to perform multiplication on 16-bit operands. The multiplier will identify the range of the operands during configuration register. The configuration register can be configured through input ports. The multiplier has been synthesized using Xilinx 14.5 and in this simulation we have achieve minimum combinational delay. Modelsim is used for the simulation part in this work.
Keywords: Radix, XPS, VHDL, Modelsim, IC fabrication, CBM, MAC, RTL, CIAF, CLA.
Title: Implementation of Radix-4 Booth Multiplier by VHDL
Author: Prof. Sneha Singh, Prachi Singh
International Journal of Recent Research in Electrical and Electronics Engineering (IJRREEE)
ISSN  2349-7815
Paper Publications