N. Vijayakumar

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This paper presents a method of applying particle swarm optimization (PSO) algorithm to a flow shop scheduling problem. Permutation encoding of job indices is used to represent particles. One particle of the initial swarm is generated using NEH heuristic (M. Nawaz, Jr., 1995) and the remaining particles are generated randomly. A continuous swap mechanism is(More)
In this article, a novel architecture for full duplex wired and wireless network with optical fiber backbone network is proposed. We employ a dual drive dual port Mach-Zehnder modulator to simultaneously modulate the CW laser source with wired and wireless data, for the downstream link. Light remodulation technique using RSOA is utilized in the upstream(More)
In order to ensure the safe supply of the drinking water the quality needs to be monitor in real time. In this paper we present a design and development of a low cost system for real time monitoring of the water quality in IOT(internet of things).the system consist of several sensors is used to measuring physical and chemical parameters of the water. The(More)
Radio Over Fiber( RoF ) technology has emerged as a solution to the increasing capacity and bandwidth requirements of wireless networks. However, the nonlinear distortion of the optical link, particularly of the Modulator, may impose serious limitations on the system performance. The nonlinearity results in Harmonic Distortion and Inter modulation effects(More)
The wireless network based on radio-over-fiber (RoF) technology is a very beneficial solution in order to meet the ever increasing demand for larger transmission bandwidth. In this paper, a cost effective full duplex RoF transport system with remodulation using Fiber Bragg Grating (FBG) is proposed. The system is capable of delivering a data rate up to 1(More)
The latest technology that is in step with the growing demand on communication networks is the millimeter wave (MMW) technology that works in the 60 GHz band in radio-over-fiber (RoF) systems. In this paper, a 60 GHz RoF system with a simple frequency up-conversion scheme is investigated such that it can cover greater fiber distances without dispersion(More)
A novel scheme for the integration of Radio Over Fiber technique with WDM-passive optical Networks is presented. WDM Passive Optical Network (WDM-PON) is an emerging solution for the ever increasing bandwidth requirements that can support a large number of users. Wireless communication now relies on RoF technology for meeting increased demand for capacity.(More)
In this article, an all optical device for reduction of transients in broadband Raman amplifiers caused due to channel switching in reconfigurable networks is presented. The passive device employs Self Phase Modulation (SPM) with filtering to effect this control. Si<sub>3</sub>N<sub>4</sub>-SiO<sub>2</sub> waveguide is designed and simulated to create a(More)