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Journal of Green EngineeringJournal divested in January 2019, new journal website is: www.jgenng.com

Editor-in-Chief: Michele Albano, ISEP - Instituto Superior de Engenharia do Porto, Portugal

ISSN: 1904-4720 (Print Version),

ISSN: 2245-4586 (Online Version)
Vol: 3   Issue: 4

Published In:   July 2013

Publication Frequency: Quarterly

Search Available Volume and Issue for Journal of Green EngineeringJournal divested in January 2019, new journal website is: www.jgenng.com

Journal Description        Read Full Articles        Editorial Board        Subscription        Indexed

Energy and Throughput Analysis of Reservation Protocols of Wi Media MAC

doi: https://doi.org/10.13052/jge1904-4720.341
Muhammad Alam, Shahid Mumtaz, Firooz B. Saghezchi, Ayman Radwan, and Jonathan Rodriguez

Instituto de Telecomunicações, Campus Universitário de Santiago, Aveiro, Portugal

Abstract: [+]    |    Download File [ 1233KB ]    |   Read Article Online

Abstract: WiMedia standardized a fully distributed high data rate communication using ultra wideband (UWB) for wireless personal area networks (WPANs). WiMedia Medium Access Control (MAC) provides asynchronous data communication service by Prioritized Channel Access (PCA) and isochronous service by Distributed Reservation Protocol (DRP). In this paper we propose three different approaches to analyze the reservation protocols, PCAand DRP, of WiMedia´s MAC. In the first two approaches we kept the portions of the superframe fixed for DRP and PCA traffics while the third approach follows random reservation. To test out the PCA and DRP by proposed approaches we presented a scenario of connected devices and incoming devices with mix traffic (video, VoIP and best effort). By means of simulations using Omnet++ and analytical results, we demonstrate that the network offers maximum throughput as well as minimum blocking and energy consumption when using the third approach, provides access to medium by Hard, Soft and PCA reservation under the WiMedia rules and policies. The throughput fairness is also estimated for the three approaches using Gini index.

Keywords: Energy Efficiency, Distributed Reservation Protocol (DRP), Ultra-Wideband (UWB),Wireless Personal Area Network.

Energy Optimization in Wireless Sensor Network through Natural Science Computing: A Survey

doi: https://doi.org/10.13052/jge1904-4720.342
Sanjeev Wagh & Ramjee Prasad

CTiF - Centre for TeleInFrastruktur, Aalborg University, Aalborg

Abstract: [+]    |    Download File [ 669KB ]    |   Read Article Online

Abstract: Nature-inspired computational algorithms are attracting engineering research for artificial intelligence solutions. The Natural science modelling for designing intelligent artefacts gives good results which reliably execute in the system. Some time it is expensive in terms of space and time to create reliable artefacts with conventional process that design the elements like intelligence, controlling operations, process optimization, threat and security, design of the future ideas, and so on. The paper addresses the natural science processes and solution directions. It integrates contrasting techniques of Genetic systems, Neural System, Immune systems and Cellular automata inspired from human organs to give solutions for energy conservation problems inWireless sensor network domain. The non-human aspects of natural science like, swarm optimization, social insects like ant honey bees, wasps, termites and many more are also discussed to solve many real-world problems. The paper gives insights into the creation of innovative improvements over algorithm performance, potential applications on various practical tasks, and combination of different techniques for energy optimization in wireless sensor networks.

Keywords: Energy optimization, Natural systems, Human organ components, swarms, Optimization levels, etc.

On the Application of Cooperative Communications in Renewable Energy Sources for Maximizing the Reliability of Power Distribution Networks

doi: https://doi.org/10.13052/jge1904-4720.343
Theodoros Tsiftsis1, Nick Papanikolaou2, Michael Loupis1 and Vasilios Zarikas1

1Department of Electrical Engineering, Technological Educational Institute (T.E.I.) of Lamia, 35100 Lamia, Greece
2Department of Electrical & Computer Engineering, Democritus University of Thrace, 67100 Kimmeria - Xanthi, Greece

Abstract: [+]    |    Download File [ 685KB ]    |   Read Article Online

Abstract: In this paper, the efficiency of cooperative communications in power distribution networks is investigated, where a number of renewable energy sources (RESs) are deployed. Specifically, any medium voltage (MV) bus of the power distribution network is considered as a wireless relay node where the information gathered from eachMVbus can be reliably transmitted to a control station for further processing. Therefore, the power distribution network can be equivalently considered as a cooperative communication network. The average bit error rate of the proposed cooperative diversity network is studied and a closedform lower bound is analytically derived. Numerical results corroborate the tightness of the proposed bound compared to the Monte Carlo simulations. The proposed wireless communication scheme enables the increase of the RES penetration level in distribution networks, improving so RES exploitation.

Keywords: Average error probability, cooperative diversity, multihop network, power distribution network, renewable energy sources.

Cell Zooming for Energy Efficient Wireless Cellular Network

doi: https://doi.org/10.13052/jge1904-4720.344
V. Prithiviraj1, S. B. Venkatraman2 and R. Vijayasarathi3

1Rajalakshmi Institute of Technology, Chennai. 2,3Pondicherry Engineering College, Puducherry, India

Abstract: [+]    |    Download File [ 1234KB ]    |   Read Article Online

Abstract: The dynamic growth of Information and Communication Technology (ICT) have considerably increased the energy requirements and also contribute a growing fraction to CO2 emissions, thereby creating a need for wireless communications to be more energy-efficient. In this paper, Cell Zooming concept is implemented for reducing the overall power consumption of the network for a five cell microcellular network adopting SON technique. When the traffic load is low in central base station, it could be switched off while its users are given coverage by cell zooming the neighboring cells. Simulation results indicate that by using the Cell Zooming concept, nearly 20% of the overall power consumption of the network can be reduced. This would herald the emergence of the Green Base Station inWireless Cellular Network.

Keywords: ICT, energy-efficient, cell zooming, SON.

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