On the reconfigurability of single-hub WDM ring networks
We study the benefit of reconfigurability for wavelength division multiplexed (WDM) ring networks with dynamic single-hubbed traffic. We show that the ability to reconfigure wavelength add-drop multiplexers helps to reduce the number of expensive line terminating equipment (LTEs) by a factor of W, w...
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| Veröffentlicht in: | IEEE/ACM transactions on networking 2003-04, Vol.11 (2), p.273-284 |
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| container_title | IEEE/ACM transactions on networking |
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| creator | Lee, Kayi Siu, Kai-Yeung |
| description | We study the benefit of reconfigurability for wavelength division multiplexed (WDM) ring networks with dynamic single-hubbed traffic. We show that the ability to reconfigure wavelength add-drop multiplexers helps to reduce the number of expensive line terminating equipment (LTEs) by a factor of W, where W is the number of wavelengths in the network. In addition, we show that for a general class of traffic, optical networks using reconfigurable wavelength add-drop multiplexers guarantee to be almost as bandwidth efficient as full wavelength add-drop networks, that is, opaque networks. For such traffic, we introduce several fast algorithms that achieve or approximate the optimal performance guarantees. The comparison between reconfigurable networks and opaque networks is quantified using a performance metric called capacity ratio, which captures the relative throughput performance of a reconfigurable network compared to the opaque network. |
| doi_str_mv | 10.1109/TNET.2003.810320 |
| format | Article |
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| ispartof | IEEE/ACM transactions on networking, 2003-04, Vol.11 (2), p.273-284 |
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| source | IEEE Electronic Library (IEL) |
| subjects | Bandwidth Computer networks Costs Heuristic algorithms Measurement Multiplexers Multiplexing Networks Optical fiber networks SONET Telecommunication traffic Throughput Traffic engineering Traffic flow Wavelength division multiplexing Wavelengths WDM networks |
| title | On the reconfigurability of single-hub WDM ring networks |
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