Autor: Leeson, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Control Mechanism for All-Optical Components
Autorzy:: Rejeb, R.
Leeson, M.
Powiązania:: https://bibliotekanauki.pl/articles/308952.pdf
Data publikacji:: 2009
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: all-optical networks
fault and performance management
securing optical networks
Opis:: In this article, we give a brief overview of security and management issues that arise in all-optical networks (AONs). Then we present an outline of the multiple attack localization and identification (MALI) algorithm that can participate in some of the tasks for fault management in AONs. Consequently, we discuss a hardware-based control unit that can be embedded in AON nodes to accelerate the performance of the MALI algorithm. We conclude the article with a discussion concerning the applicability and implementation of this device in AON management systems.
Źródło:: Journal of Telecommunications and Information Technology; 2009, 1; 57-62
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Fault Tolerant Dense Wavelength Division Multiplexing Optical Transport Networks
Autorzy:: Ren, W.
Naderi, M.
Leeson, M.
Hines, E.
Powiązania:: https://bibliotekanauki.pl/articles/308964.pdf
Data publikacji:: 2009
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: dedicated path protection architecture
genetic algorithm
DWDM
fault-tolerant networks
optical networks
Opis:: Design of fault tolerant dense wavelength division multiplexing (DWDM) backbones is a major issue for service provision in the presence of failures. The problem is an NP-hard problem. This paper presents a genetic algorithm based approach for designing fault tolerant DWDM optical networks in the presence of a single link failure. The working and spare lightpaths are encoded into variable length chromosomes. Then the best lightpaths are found by use of a fitness function and these are assigned the minimum number of wavelengths according to the problem constraints using first-fit (FF) algorithm. The proposed approach has been evaluated for dedicated path protection architecture. The results, obtained from the ARPA2 test bench network, show that the method is well suited to tackling this complex and multi-constraint problem.
Źródło:: Journal of Telecommunications and Information Technology; 2009, 1; 63-67
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Network Topology Effect on QoS Delivering in Survivable DWDM Optical Networks
Autorzy:: Kavian, Y.
Rashvand, H.
Leeson, M.
Ren, W.
Hines, E.
Naderi, M.
Powiązania:: https://bibliotekanauki.pl/articles/308960.pdf
Data publikacji:: 2009
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: dedicated path protection
DWDM
network topology
optical networks
QoS
survivability
Opis:: The quality of service (QoS) is an important and considerable issue in designing survivable dense wavelength division multiplexing (DWDM) backbones for IP networks. This paper investigates the effect of network topology on QoS delivering in survivable DWDM optical transport networks using bandwidth/load ratio and design flexibility metrics. The dedicated path protection architecture is employed to establish diverse working and spare lightpaths between each node pair in demand matrix for covering a single link failure model. The simulation results, obtained for the Pan-European and ARPA2 test bench networks, demonstrate that the network topology has a great influence on QoS delivering by network at optical layer for different applications. The Pan-European network, a more connected network, displays better performance than ARPA2 network for both bandwidth/load ratio and design flexibility metrics.
Źródło:: Journal of Telecommunications and Information Technology; 2009, 1; 68-71
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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