Rohini Saxena

Design and Performance Analysis of Optical Transmission System

In this paper we have discussed a simulated long haul optical transmission system Over the single mode fibre which is prove to the liner chromatic dispersion as well as Non linearity. Both Parameter have been of great concern as these confine the overall Efficiency of the system. Loop control is commonly chosen as an important component in optical communication system. Loop control is very simple, has a multiplier for increasing the length of optical fibre. E DFA is used for amplification of the signal. The objective of this paper is to analyze the performance of two different modulation scheme i.e RZ and NRZ modulation format at 10GB/s. RZ and NRZ modulation format is the scheme used to avoid intersymbol interference on an optical carrier wave for transmission over optical fibre. Each modulation method has its own advantages and disadvantages for the particular channel conditions. The performance of RZ and NRZ based simulated optical communication system with single channel over single mode fibre is investigated. Based on modulated outputs of RZ and NRZ codes, a comprehensive comparison is developed in terms of Q factor BER , eye diagrams and average input power to establish the merits and demerits of the RZ formats in short as well as long haul optical communication system.

Design Optimization of Energy and Delay Efficient Wireless Sensor Network with the help of Particle Swarm Optimization and Cluster based Least Spanning Tree Algorithm

In WSN sensors are randomly deployed in the sensor field which brings the coverage problem and limited energy resources. Hence energy and coverage problem are very scarce resources for such sensor systems and has to be managed wisely in order to extend the life of the sensors and maximizing coverage for the duration of a particular mission. In past a lot of cluster based algorithm and techniques were used. In this paper we propose combination of PSO based algorithm and cluster based Least Spanning Tree algorithm, which are very effective alone for WSN, and we also obtain life of sensor node and data transmission by LST based PSO algorithm. These techniques effectively overcome the problems of low energy and coverage of

Monitoring the Power Requirement of Wireless Sensor Networks in Non-Homogeneous Forest Environment

This paper describes the sensor nodes and its hardware constraints. This paper throws light over the energy issues of the sensor nodes while transmitting and receiving data over the distances and effects of attenuation due to several environmental parameters. This paper also gives the comparative analysis of received power at different heights of transmitter antenna.