Channel allocation algorithm for WDM systems
Vrizlynn L. L. Thing, P. Shum, and M. K. Rao
School of Electrical and Electronic Engineering, Nanyang Technological University,
Block S2, S2-B3c-23, Nanyang Avenue, Singapore 639798
vriz@i2r.a-star.edu.sg, epshum@ntu.edu.sg, emkrao@ntu.edu.sg
Abstract: An algorithm for WDM channel allocation, based on the concept
of Optimal Golomb Ruler (OGR), is proposed. This algorithm enhances
system performance by locating an allocation set, where the degradation
caused by the effects of interchannel interference and Four-Wave Mixing
(FWM) is minimal. Two sets of simulation were performed on an 8x10Gbps-
channel system (channel spacing of 50GHz for equally spaced allocation),
with 50% pre-allocated bandwidth using non-zero dispersion-shifted fibers
with dispersion of 3 and 6ps/nm.km at 1550nm. Results showed BER
improvement of 1.75 and 0.97 for the 3 and 6ps/nm.km simulations
respectively. This improvement is significant, considering the fact that no
additional cost (bandwidth) was incurred, unlike existing unequally spaced
channel allocation methods.
2003 Optical Society of America
OCIS codes: (060.4510) Optical communications; (190.4380) Nonlinear optics, four-wave
mixing
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