By Chonggang Wang

ISBN-10: 3642046479

ISBN-13: 9783642046476

This e-book constitutes the completely refereed post-conference complaints of the 3rd overseas convention on entry Networks, AccessNets 2008, held in Las Vegas, NV, united states, in October 2008.

The 30 revised complete papers awarded including five invited papers have been conscientiously reviewed and chosen. The papers current unique and basic study advances within the zone of entry networks, reminiscent of hybrid entry networks, passive optical networks, fiber assisted instant for broadband entry networks, provider ethernet and the evolving entry networks, instant entry networks dsl networks dynamic spectrum administration (dsm) successes, plc and dsl networks, in addition to entry community performance.

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Read or Download Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture Notes ... and Telecommunications Engineering) PDF

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Additional resources for Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture Notes ... and Telecommunications Engineering)

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Moving cell-based RoF network architecture for train passengers [19] 26 M. Maier, N. Ghazisaidi, and M. Reisslein In conventional cellular radio networks, a hand-over would take place whenever the train crosses the cell boundary between two neighboring RAUs. To avoid hand-overs, the applied concept of moving cells lets a cell pattern move together with the passing train such that the train can communicate on the same RF frequencies during the whole connection without requiring hand-overs. The central station implements the moving cells by subsequently sending the RF frequencies used by the train to the next RAU following in the direction the train is moving.

Then the two RF signals go into two different electroabsorption modulators (EAMs) and modulate the optical carrier wavelength emitted by two separate laser diodes. An optical combiner combines the two optical signals onto the SMF downlink. At the base station, a photodiode converts the incoming optical signal to the electrical domain and radiates the amplified signal through an antenna to a mobile user or vehicle which uses two separate frequency converters to retrieve the two different radio client signals.

The central station implements the moving cells by subsequently sending the RF frequencies used by the train to the next RAU following in the direction the train is moving. Based on the received upstream RF signals, the central station is able to track the location of the train and assign downstream RF signals to the corresponding RAU closest to the train such that the train and moving cells move along in a synchronous fashion. Fig. 4 shows a two-level bidirectional path-protected ring R&F architecture for dense WDM/subcarrier multiplexing (SCM) broadband FiWi networks [20].

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Access Nets: Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers (Lecture Notes ... and Telecommunications Engineering) by Chonggang Wang


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