International Conference on Computers and Devices for Communication 

About: International Conference on Computers and Devices for Communication is an academic conference. The conference publishes majorly in the area(s): Optical switch & Quantum dot. Over the lifetime, 435 publications have been published by the conference receiving 1217 citations.

Nanosilicon photonics

Abstract: Silicon Photonics is no more an emerging field of research and technology but a present reality with commercial products available on the market, where low dimensional silicon (nanosilicon or nano-Si) can play a fundamental role. After a review of the field, the optical properties of silicon reduced to nanometric dimensions are introduced. The use of nano-Si, in the form of Si nanocrystals, in the main building blocks of Silicon Photonics (waveguides, modulators,sources and detectors) is reviewed and discussed. Recent advances of nano-Si devices such as waveguides,optical resonators (linear,rings and disks) are treated. Large emphasis is dedicated to the visible optical gain properties of nano-Si and to the sensitization effect on Er ions to achieve infrared light amplifications. The possibility of electrical injection in the light emitting diodes is presented as well as the recent development addressed to exploit nano-Si for solar cells. In addition, nonlinear optical effects which will enable fast all-optical switches are described.

A Generalized Fibonacci LSB Data Hiding Technique

Abstract: In this contribution, we present a novel embedding scheme based on the generalized Fibonacci decomposition. This representation allows an innovative bit plane decomposition, suitable for embedding purposes. A comparison between the classical Least Significant Bit (LSB) method and the proposed scheme has been performed by considering the perceptual degradation of the mark with respect to the hiding capacity.

All-optical XOR/XNOR logic gate using micro-ring resonators

Abstract: Simultaneous logic and its inverse operation in a single circuit is very important and effective research topics in optical computing recently. Many designes have been proposed by many authors in different approach. Among them micro-ring resonator based ‘directed logic’ circuit is attractive, because it can be easily fabricated in chip level. But most of the proposed logic circuits are based on electrical pumping. To over come the optical-electrical bottleneck here we have used optical pumping rather than electrical. In this literature we proposed two cascaded micro-ring resonator based all optical circuit capable of carrying out simultaneous XOR and XNOR operations. Simulation results confirming described method is also reported. The proposed all-optical logic circuit can be easily extended to n-bit XOR/XNOR circuit which is also shown in this manuscript.

Smart home for elderly care using optimized number of wireless sensors

Abstract: We describe a novel in-home monitoring system designed to for elder-care application. The statistics shows that there is increasing number of elderly people around the world and this isn't going to change. In developing contries like India, because of growing busy life style, many elderly people are being forced to live alone or put in a rest home or other sheltered living arrangement by their children. Causing the elderly vulnerable and losing their independence. We developed a smart-system consists of optimum number of wireless sensors that includes current, bed, and water flow sensors. The sensors provide information that can be used for monitoring elderly by detecting abnormality pattern in their active daily life. The system will generate early warning message to care giver, when an unforeseen abnormal condition occurs. It will also, analyze the gathered data to determine residents behaviour. Instead of using many number of sensors, the importance of positioning the optimal number of intelligent sensors close to the source of a potential problem phenomenon, where the acquired data provide the greatest benefit or impact has been discussed.

Identification and analysis of coding and non-coding regions of a DNA sequence by positional frequency distribution of nucleotides (PFDN) algorithm

Abstract: During the last several years, substantial progress has been made in developing high-throughput experimental techniques that produce large amounts of genomic data pertaining to molecular activities in cells. Consequently, a great deal of research is being focused on addressing important problems in molecular biology by analyzing these data using mathematical and computational approaches. Genomic signal processing has been an active area of research for the past two decades and have increasingly attracted the attention of researchers from digital signal processing area all over the world. An important step in genomic annotation is to identify protein coding regions of DNA sequence especially in the study of eukaryotic genomes. Due to lack of obvious sequence features among exons and introns, distinguishing protein coding regions from non-coding regions effectively is a challenging problem. A variety of computational algorithms have been developed to predict exons. Most of the exon finding algorithms are based on statistics methods. The signal processing approaches of recent years may identify some hidden periodicity and features which can not be revealed easily by conventional statistics methods. In this paper the authors have presented an algorithm to separate out coding regions from non-coding regions based on positional frequency distribution of nucleotides and the algorithm shows the results that exon regions exhibit more random behavior compared to intron regions. Such a behavior was also observed by FFT power spectrum analysis of DNA sequences. Case studies on genes from different organisms show that the algorithm is an effective approach towards exon prediction.