TY - GEN
T1 - LERP
T2 - 15th International Conference on Computer Communications and Networks 2006, ICCCN 2006
AU - Ezzahdi, Mohamed Ali
AU - Al Zahr, Sawsan
AU - Koubàa, Mohamed
AU - Puech, Nicolas
AU - Gagnaire, Maurice
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Over the last decade, numerous Routing and Wave-length Assignment (RWA) algorithms have been developed for WDM optical networks planning. Most of these algorithms neglect the feasibility of the obtained lightpaths. In this paper, we propose a new algorithm, called LERP (Lightpath Establishment with Regenerator Placement), that enables to solve the problem of RWA in guaranteeing the feasibility of the obtained solution. A lightpath is said admissible if the BER (Bit Error Rate) at its destination node remains acceptable (remains under a given threshold). In the case of BER non-admissibility, one or more electrical regenerators may be placed along the lightpath. The LERP algorithm aims at minimizing the number of regenerators necessary to guarantee the quality of transmission along the lightpath. The originality of the our approach consists in considering simultaneously four physical layer impairments, namely, chromatic dispersion, polarization mode dispersion, amplified spontaneous emission and non-linear phase shift. The efficiency of the LERP algorithm is demonstrated via a numerical comparison with one of the alternative solutions proposed in the literature. Numerical simulations have been carried out in the context of the 18-node NSF network.
AB - Over the last decade, numerous Routing and Wave-length Assignment (RWA) algorithms have been developed for WDM optical networks planning. Most of these algorithms neglect the feasibility of the obtained lightpaths. In this paper, we propose a new algorithm, called LERP (Lightpath Establishment with Regenerator Placement), that enables to solve the problem of RWA in guaranteeing the feasibility of the obtained solution. A lightpath is said admissible if the BER (Bit Error Rate) at its destination node remains acceptable (remains under a given threshold). In the case of BER non-admissibility, one or more electrical regenerators may be placed along the lightpath. The LERP algorithm aims at minimizing the number of regenerators necessary to guarantee the quality of transmission along the lightpath. The originality of the our approach consists in considering simultaneously four physical layer impairments, namely, chromatic dispersion, polarization mode dispersion, amplified spontaneous emission and non-linear phase shift. The efficiency of the LERP algorithm is demonstrated via a numerical comparison with one of the alternative solutions proposed in the literature. Numerical simulations have been carried out in the context of the 18-node NSF network.
U2 - 10.1109/ICCCN.2006.286257
DO - 10.1109/ICCCN.2006.286257
M3 - Conference contribution
AN - SCOPUS:40949165707
SN - 1424405726
SN - 9781424405725
T3 - Proceedings - International Conference on Computer Communications and Networks, ICCCN
SP - 125
EP - 136
BT - Proceedings - 15th International Conference on Computer Communications and Networks 2006, ICCCN 2006
Y2 - 9 October 2006 through 11 October 2006
ER -