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Deepa, T.
- Multihomed Routing for Power Efficiency
Authors
Source
Fuzzy Systems, Vol 7, No 2 (2015), Pagination: 58-65Abstract
The use of the multi-interfaced devices has been increasing due to multi-homed streaming services. Running multiple interfaces simultaneously in a mobile interface may cause battery drain even in sleep modes and it can cause degradation of QOS. The abstract of our project is to provide dynamic load distribution which includes a multi-interfaced device with multi homing capability thereby preventing the mobile terminals going to sleep mode. The PELD (power efficiency load distribution) algorithm is used which can be easily adopted and deployed to find a optimal point with low complexity and convergence time. The tool used here is network simulator2 tool where the implementation is done and the coding is written in tcl.
- Performance Analysis of Coded OFDM for Optical Wireless Communication System
Authors
1 Department of Telecommunication Engineering, SRM University, Chennai - 603203, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 38 (2016), Pagination:Abstract
Background/Objectives: Orthogonal Frequency Division Multiplexing (OFDM) is an efficient multicarrier modulation technique suitable for optical communication due to high data rate, high spectrum efficiency. A serious problem of this system is the large dynamic range of the transmitted signal due to the nonlinear Power Amplifier (PA). To achieve high power efficiency, Peak to Average Power Ratio (PAPR) value has to be reduced. Methods/Statistical Analysis: In OFDM system, error correction code is an essential for transmission of high data rate. Recently, Low-Density Parity-Check (LDPC) is commonly used as error correcting code. Findings: Here, we present LDPC coded OFDM system to analyze the performance metrics such as Complementary Cumulative Distribution Function (CCDF), Bit Error Rate (BER), Error Vector Magnitude (EVM), Modulation Error Rate (MER) on AWGN channel with and without irregular LDPC codes. Simulation results show that the LDPC code on OFDM system to improve CCDF as well as BER performance than that of uncoded OFDM system. Simulation results also show that by modulating a signal at fixed subcarriers, the EVM decreases and MER increases as the function of Signal to Noise Ratio (SNR) increases. Application/Improvements: Hence, the advantage of LDPC, which makes it possible work in application with low BER, such as wire communication, deep space communication and disk storage industry, etc.Keywords
CCDF, EVM, LDPC, MER, OFDM.Full Text
- A Systematic Approach to CMOS Low Noise Amplifier Design for Low Power Transmission
Authors
1 Department of Telecommunication, SRM University, Kattankulathur - 603203, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 16 (2016), Pagination:Abstract
Recent interest in 60 GHz band for high-density and short range wireless links has led to significant progress in milli-metre (mm) wave radio systems. The Low Noise Amplifier (LNA) serves as the first component in the Radio Frequency (RF) transceiver system. The performance of LNA determines the sensitivity and selectivity of the system. In order to maximize performance gain, Noise Figure (NF) and input matching of LNA need to be optimized. A LNA for 60 GHz is designed. The main topology used in our design is cascode with a middle inductor and a Common Source (CS) configuration. The design is laid out on 130 nm CMOS standard technology. LNA is designed using classical noise matching techniques. Simulated results shows a very low noise figure of 1.3 dB with a gain of 9.8 dB and the reflection coefficientis-11.5 dB. The proposed LNA can be very well used in biomedical applications in research areas like neurology and other short range applications.Keywords
CMOS, Cascode Topology, CS Configuration, 60 GHz, LNAFull Text
- Network Security
Authors
1 Department of Computer Science, Sri Ramakrishna CAS, Coimbatore, IN
Source
Software Engineering, Vol 9, No 1 (2017), Pagination: 13-16Abstract
For the first few decades of their existence, computer networks were primarily used by university researchers for sending e-mail and by corporate employees for sharing printers. Under these conditions, security did not get a lot of attention. But now, as millions of ordinary citizens are using networks for banking, shopping, and filing their tax returns, network security is looming on the horizon as a potentially.
Keywords
Internet of Thing, Network Connectivity, Spoofing, Social Engineering, Eavesdropping.- Nano Computing
Authors
1 Department of Computer Science, Sri Ramakrishna College of Arts and Science for Women, Coimbatore, IN
2 Department of Computer Science, Sri Ramakrishna College of Arts and Science for Women, Coimbatore, IN
Source
Digital Signal Processing, Vol 9, No 1 (2017), Pagination: 7-9Abstract
Nanotechnology is now a days strengthening its ischolar_mains in the field of computer science by contributing in the creation of more efficient computing components .Nanotechnology has been developed in several fields of studies including, material science, engineering , chemistry, physics, biology and computer science as well .Novel nano materials and nano devices are fabricated and controlled by nanotechnology tools and techniques, This paper shows how these nanotechnology tools and devices can be used to benefit Information technology Industry and we look for the needs and chances of nanotechnology research in computer science. Nano technology in computer science is named as Nano computing .which is divided into categories- Electronic Nano computing, Mechanical
Nano computing, Chemical
Nano computing, Quantum Nano computing etc. The application and use of nano materials in electronic devices, in optical and magnetic components are the economically most important parts of the nanotechnology permeate the design of artefacts at nowadays and likely in the near future. Advances in technology repeatedly allow software to lower and lower levels. This occurred long ago with microprogramming, when computers were stand-alone; more recently it occurred with programmable networks (e.g. routers); it is now occurring with wireless networks. Nanotechnology will lead to a new dramatic step of this kind. Although it will include applications that require little computational input, it will also provide opportunities for exploitation that involve complex computational interactions among structured populations of nanoscopic agents. The more sophisticated these structures and interactions, the more Computer Science (CS) research will be involved. The modification of today’s top-down technology to produce nano scale structures is difficult and expensive, a new generation of computer components will be required. A new style of technology is introduced, which assembles individual atoms or molecules into a refined product. This technology is termed as molecular technology or bottom-up technology. This bottom-up technology could be the answer for the computer industry. Though topdown technology currently remains the choice for constructing mass produced devices, nanotechnologists are having increasing success in developing bottom-up technology. Such research is wide ranging and includes: software engineering, networking, internet security, image processing, virtual reality, human machine interface, artificial intelligence, and intelligent systems. Most work focuses on the development of fast computing components. The nanometer level new devices, methods of assembly, and architectures are being investigated. The crossbar, an old idea, is expected to play a prominent role in these new developments; its regular structure is well suited to nanotechnology-based assembly. . It is not an attempt to violate any laws; it is something, in principle, that can be done.
- Network Security
Authors
1 Department of Computer Science, Sri Ramakrishna CAS, Coimbatore, IN
2 Department of Computer Science, Sri Ramakrishna CAS, Coimbatore, IN
Source
Digital Signal Processing, Vol 9, No 1 (2017), Pagination: 13-16Abstract
For the first few decades of their existence, computer networks were primarily used by university researchers for sending e-mail and by corporate employees for sharing printers. Under these conditions, security did not get a lot of attention. But now, as millions of ordinary citizens are using networks for banking, shopping, and filing their tax returns, network security is looming on the horizon as a potentially.
Keywords
Internet of Thing, Network Connectivity, Spoofing, Social Engineering, Eavesdropping.- Comprehensive Feature Selection for Clinical Dataset
Authors
1 Sri Ramakrishna College of Arts and Science College for Women, Coimbatore - 641044, IN
Source
Fuzzy Systems, Vol 10, No 2 (2018), Pagination: 25-27Abstract
Feature selection plays a significant role in any data mining research problem. In this research work, comprehensive feature selection is applied for selecting the attributes in the chosen PIMA Indian diabetes dataset. The comprehensive feature selection mechanism makes use of maximum significance pattern for selecting the most edifying features, which effectively distinguish between different classes of samples.Keywords
Feature Selection, Data Mining, Gestational Diabetes, Accuracy, Time Taken, Feature Selection, Risk Prediction.References
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