from Part I - Enabling technologies
Published online by Cambridge University Press: 05 October 2012
Abstract: Internet users and their emerging applications require high-data-rate access networks. Today's broadband access technologies – particularly in US – are Digital Subscriber Line (DSL) and Cable Modem (CM). But their limited capacity is insufficient for some emerging services such as IPTV. This is creating the demand for Fiber-to-the-X (FTTX) networks – typically employing Passive Optical Network (PON) – to bring the high capacity of fiber closer to the user. Long-Reach PON can reduce the cost of FTTX by extending the PON coverage using Optical Amplifier and Wavelength-Division-Multiplexing (WDM) technologies. Since Internet users want to be untethered (and also mobile), whenever possible, wireless access technologies also need to be considered. Thus, to exploit the reliability, robustness, and high capacity of optical network and the flexibility, mobility, and cost savings of wireless networks, the Wireless-Optical Broadband Access Network (WOBAN) is proposed. These topics are reviewed in this chapter.
Introduction
An access network connects its end-users to their immediate service providers and the core network. The growing customer demands for bandwidth-intensive services are accelerating the need to design an efficient “last mile” access network in a cost-effective manner. Traditional “quad-play” applications, which include a bundle of services with voice, video, Internet, and wireless, need to be delivered over the access network to the end-users in a satisfactory and economical way. High-data-rate Internet access, known as broadband access, is therefore essential to support today's and emerging application demands.
To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Find out more about the Kindle Personal Document Service.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.
To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.