Green Radio Communication Networks Applying Radio-over-Fibre Technology for Wireless Access

Green Radio Communication Networks Applying Radio-over-Fibre Technology for Wireless Access
Author: Mazin Al Noor
Publisher: GRIN Verlag
Total Pages: 201
Release: 2012-07-17
Genre: Technology & Engineering
ISBN: 3656235686

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Doctoral Thesis / Dissertation from the year 2011 in the subject Engineering - Communication Technology, grade: Pass, ( Middlesex University in London ) (School of Engineering and Information Sciences), course: PhD, language: English, abstract: The all-around presence of wireless communication links combined with functions that support mobility will make a roaming person-bound communication network possible in the near future. This idea of a personal network, in which a user has his own communication environment available everywhere. The overall aim of this research project was to simulate the transmission wireless and baseband RF signals via fibre for a long distance in high quality, consuming a low-power budget. Therefore, this thesis demonstrated a green radio communication network and the advantage of transmitting signals via fibre rather than via air. The contributions of this research work were described in the follows:Firstly, a comparison of the power consumption in WiMAX via air and fibre is presented. As shown in the simulation results, the power budget for the transmission of 64 QAM WiMAX IEEE 802.16-2005 via air for a distance of 5km lies at -189.67 dB, whereas for the transmission via RoF for a distance of 140km, the power consumption ranges at 65dB. Through the deployment of a triple symmetrical compensator technique, consisting of SMF, DCF and FBG, the transmission distance of the 54 Mbps WiMAX signal can be increased to 410km without increasing the power budget of 65dB. An amendment of the triple compensator technique to SMF, DCF and CFBG allows a 120Mbps WiMAX signal transmission with a clear RF spectrum of 3.5 GHz and constellation diagram over a fibre length of 792km using a power budget of 192dB. Secondly, the thesis demonstrates a simulation setup for the deployment of more than one wireless system, namely 64 QAM WiMAX IEEE 802.16-2005 and LTE, for a data bit rate of 1Gbps via Wavelength Division Multiplexing (WDM) RoF over a transmission distance of 1800km. The RoF system includes two triple symmetrical compensator techniques - DCF, SMF, and CFBG - to obtain a large bandwidth, power budget of 393.6dB and a high signal quality for the long transmission distance. Finally, the thesis proposed a high data bit rate and energy efficient simulation architecture, applying a passive optical component for a transmission span up to 600km. AGigabit Optical Passive Network (GPON) based on RoF downlink 2.5 Gbps and uplink 1.25Gbps is employed to carry LTE and WiMAX, also 18 digital channels by utilising Coarse Wavelength Division Multiplexing (CWDM). The setup achieved high data speed, a lowpower budget of 151.2dB,and an increased service length of up to 600km.

Green Radio Communication Networks

Green Radio Communication Networks
Author: Ekram Hossain
Publisher: Cambridge University Press
Total Pages: 439
Release: 2012-07-05
Genre: Technology & Engineering
ISBN: 1107017548

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Presents state-of-the-art research on green radio communications and networking technology to researchers and professionals working in wireless communication.

WiMAX Improvements in Green Radio Communications Utilizing Radio-over- Fiber

WiMAX Improvements in Green Radio Communications Utilizing Radio-over- Fiber
Author: Mazin Al Noor
Publisher: GRIN Verlag
Total Pages: 11
Release: 2012-06-22
Genre: Technology & Engineering
ISBN: 365622367X

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Essay aus dem Jahr 2012 im Fachbereich Ingenieurwissenschaften - Nachrichten- und Kommunikationstechnik, ( Middlesex University in London ), Sprache: Deutsch, Abstract: WiMAX as an alternative technology of the wireless broadband internet service provider technique and Radio over Fiber (RoF) as a technique that employs fiber optic communication technologies to transmit radio-frequency (RF) modulated standard signals for today's wireless and mobile applications. Green radio communication means that the power consumption of the communication systems could be minimized by removing some of the electrical active components and equipment by replacing the passive photonic devices and centralizing the signal processing. We have proposed and demonstrated the improvement of WiMAX power efficiency in green communication by utilizing a radio over fiber system. The simulation has been presented for a WiMAX signal transmitted through single mode fiber optic for 80Km and 5Km on the air. The demonstration results show high Signal-to-Noise-Ratio (SNR), extensive power reduction of up to 90% in WiMAX-RoF and a high power loss of WiMAX signal deployed through air.

Cooperative Radio Communications for Green Smart Environments

Cooperative Radio Communications for Green Smart Environments
Author: Narcis Cardona
Publisher: River Publishers
Total Pages: 666
Release: 2016-06-27
Genre: Technology & Engineering
ISBN: 8793379153

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The demand for mobile connectivity is continuously increasing, and by 2020 Mobile and Wireless Communications will serve not only very dense populations of mobile phones and nomadic computers, but also the expected multiplicity of devices and sensors located in machines, vehicles, health systems and city infrastructures. Future Mobile Networks are then faced with many new scenarios and use cases, which will load the networks with different data traffic patterns, in new or shared spectrum bands, creating new specific requirements. This book addresses both the techniques to model, analyse and optimise the radio links and transmission systems in such scenarios, together with the most advanced radio access, resource management and mobile networking technologies. This text summarises the work performed by more than 500 researchers from more than 120 institutions in Europe, America and Asia, from both academia and industries, within the framework of the COST IC1004 Action on "Cooperative Radio Communications for Green and Smart Environments". The book will have appeal to graduates and researchers in the Radio Communications area, and also to engineers working in the Wireless industry. Topics discussed in this book include: Radio waves propagation phenomena in diverse urban, indoor, vehicular and body environmentsMeasurements, characterization, and modelling of radio channels beyond 4G networksKey issues in Vehicle (V2X) communicationWireless Body Area Networks, including specific Radio Channel Models for WBANs Energy efficiency and resource management enhancements in Radio Access NetworksDefinitions and models for the virtualised and cloud RAN architectures Advances on feasible indoor localization and tracking techniquesRecent findings and innovations in antenna systems for communicationsPhysical Layer Network Coding for next generation wireless systems Methods and techniques for MIMO Over the Air (OTA) testing

Green Communication in 4G Wireless Systems

Green Communication in 4G Wireless Systems
Author: Shahid Mumtaz
Publisher: River Publishers
Total Pages: 278
Release: 2013-03-15
Genre: Science
ISBN: 8792982050

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Green communication has emerged as one of the most important research topics for radio systems. This leads us to develop an energy-efficient mechanism which adjusts transmission power according to the traffic load and reduces the energy per bit usage. For the vision of Europe 2020 as a smart, sustainable and inclusive economy to become reality, the EU have set forth the 20:20:20 targets by which greenhouse gas emissions and energy reduction of primary use should be reduced by 20% while 20% of energy consumption should come from renewable resources. In fact, in today's energy-conscious society, Information and Communication Technology (ICT) accounts for 2% of the global CO2 emissions. A medium-sized cellular network uses as much energy as 170,000 homes, while the cost of powering the existing BSs accounts for a staggering 50% of a service provider's overall expenses. Therefore, new solutions are required whereby operators can accommodate additional traffic volume whilst reducing their investment in new infrastructure and beyond that significantly reduces their energy bill. Moreover, the EU political agenda, in unison with expected growth in mobile data, has identified cost and energy per bit reduction as a stringent design requirement for mobile networks of the future. Green Communication for 4G Wireless Systems mainly covers energy efficient techniques in physical, MAC and network layers. Cross-layer energy efficiency optimization in time and frequency has been also discussed with two fundamental tradeoffs, energy efficiency and spectral efficiency. This technical introduction to Green Communication in 4G wireless systems, explaining the rather complex standards (3GPP Releases R10 and R11), is a must-read for engineers, decision-makers and students interested in Green Communication, as well as other researchers and scientists from this evolving field.

Spectrum Sharing in Cognitive Radio Networks

Spectrum Sharing in Cognitive Radio Networks
Author: Shweta Pandit
Publisher: Springer
Total Pages: 270
Release: 2017-04-12
Genre: Technology & Engineering
ISBN: 3319531476

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This book discusses the use of the spectrum sharing techniques in cognitive radio technology, in order to address the problem of spectrum scarcity for future wireless communications. The authors describe a cognitive radio medium access control (MAC) protocol, with which throughput maximization has been achieved. The discussion also includes use of this MAC protocol for imperfect sensing scenarios and its effect on the performance of cognitive radio systems. The authors also discuss how energy efficiency has been maximized in this system, by applying a simple algorithm for optimizing the transmit power of the cognitive user. The study about the channel fading in the cognitive user and licensed user and power adaption policy in this scenario under peak transmit power and interference power constraint is also present in this book.

Radio over Fiber for Wireless Communications

Radio over Fiber for Wireless Communications
Author: Xavier N. Fernando
Publisher: John Wiley & Sons
Total Pages: 335
Release: 2014-06-16
Genre: Technology & Engineering
ISBN: 1118797035

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A comprehensive evaluation of Fi-Wi, enabling readers to design links using channel estimation and equalization algorithms This book provides a detailed study of radio over fiber (ROF) based wireless communication systems, otherwise called fiber wireless (Fi-Wi) systems. This is an emerging hot topic where the abundant bandwidth of optical fiber is directly combined with the flexibility and mobility of wireless networks to provide broadband connectivity. Its application is increasing because of the growing demand for broadband wireless services. In such a system the transmission of the radio signals over a fiber is an important task. This book provides substantial material on the radio over fiber part of the complete fiber-wireless system, including new research results on the compensation methods. The early chapters provide fundamental knowledge required for a non-expert engineering professional as well as senior/graduate level students to learn this topic from scratch. The latter part of the book covers advanced topics useful for researchers and senior students. Therefore, this book provides a comprehensive understanding of the system for readers who will gain enough knowledge to design Fi-Wi links of their own by learning how to develop Fi-Wi channel estimation and equalization algorithms. This concept is completely novel in current literature and has been patented by the author. Readers are expected to have a basic understanding of fiber optics and wireless communications to easily follow the book and to appreciate the concepts. Basics of the Fi-Wi system and signal processing approaches are clearly explained. It covers a multidisciplinary topic and acts as a bridge between optical and wireless communication domains. In the increasingly demanding telecommunications profession, engineers are expected to have knowledge in both optical and wireless communications and expected design combined/hybrid systems. Hence, the book is written in such a way that both optical and wireless professionals will be able to easily understand and perceive the concepts. follows a logical process from basic principles through to advanced topics, providing a wide range of interest for researchers, practicing engineers, students, and those required to build such networks explains detailed system design concepts and the limitations and advantages in each configuration, appealing to design engineers, and largely avoiding system specifics demonstrates the author’s exclusive patent, showing how to develop baseband signal processing algorithms for Fi-Wi systems, which is a key requirement for the successful deployment of Fi-Wi systems contains tables, numerical examples and case studies, facilitating a good quantitative understanding of the topic

Radio Over Fiber - A New Communication Era

Radio Over Fiber - A New Communication Era
Author: Jincy Johny
Publisher: LAP Lambert Academic Publishing
Total Pages: 84
Release: 2012
Genre:
ISBN: 9783659241390

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Radio over Fiber is an innovating technology which provides provisioning for the flourishment of broadband wireless service which combines flexible optical routing and robust ROF transport technologies. ROF is an integration of wireless and fiber optic networks, which provides untethered access to broadband wireless communications in a range of applications including last mile solutions, extension of existing radio coverage and capacity. A Nematic type Liquid Crystal PCF (Photonic Crystal Fiber) is used, which has low loss, light weight, large bandwidth characteristics, and small size and low cable cost which makes it ideal and most flexible solution for efficiently transporting radio signals to remotely located antenna sites in a wireless network. Here we consider a Fractionally Spaced Equalizer (FSE) for electronic compensation of Chromatic Dispersion (CD) and Polarization Mode Dispersion (PMD) in a dually polarized coherent ROF communication system. By analyzing group delay difference and polarization walk off between different frequencies components through proper RF signal processing, both CD and PMD can be precisely determined.

Radio Over Fiber Technologies for Mobile Communications Networks

Radio Over Fiber Technologies for Mobile Communications Networks
Author: Hamed Al-Raweshidy
Publisher: Artech House
Total Pages: 459
Release: 2002
Genre: Computers
ISBN: 1580531482

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Over the past decade there have been massive advances in the areas of mobile and optical fiber communications. This unique book shows you how to combine these methods to create new radio over fiber technologies that offer seamless operation and greater multimedia application potential for your current and third generation mobile communication networks.

Self-Organization and Green Applications in Cognitive Radio Networks

Self-Organization and Green Applications in Cognitive Radio Networks
Author: Al-Dulaimi, Anwer
Publisher: IGI Global
Total Pages: 354
Release: 2013-01-31
Genre: Technology & Engineering
ISBN: 1466628138

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Self-Organization and Green Applications in Cognitive Radio Networks provides recent research on the developments of efficient cognitive network topology. The most current procedures and results are presented to demonstrate how developments in this area can reduce complications, confusion, and even costs. The book also identifies future challenges that are predicted to arrive in the Cognitive Radio Network along with potential solutions. This innovative publication is unique because it suggests green, energy efficient and cost efficient resolutions to the inevitable challenges in the network.