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Adaptive modulation allocation algorithm in elastic optical networks
Author(s) -
Bandiri Sabi Y.M.,
Pimenta Tales C.,
Durand Fabio R.,
Spadoti Danilo H.
Publication year - 2020
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.4581
Subject(s) - computer science , link adaptation , bandwidth (computing) , modulation (music) , quality of service , efficient energy use , energy consumption , transmission (telecommunications) , blocking (statistics) , algorithm , computer network , energy (signal processing) , telecommunications , electrical engineering , mathematics , philosophy , statistics , decoding methods , fading , engineering , aesthetics
Summary This paper introduces a new way to allocate the modulation format and improves the energy efficiency in elastic optical networks. For every connection request, both the quality of transmission and quality of service requirements are investigated. The allocation of modulation formats is based on both the physical distance and the required number of frequency slots. To improve the energy efficiency, Yen's algorithm is executed for every connection requested, and the lightpath with the lowest power consumption is selected. Numerical results were compared with adaptive modulation algorithms presented in the existing literature. The energy efficiency was improved by up to 27%, the used bandwidth available was reduced by up to 60%, and the blocking probability was decreased by 30% using our proposed adaptive algorithm.