Design of a novel XT-aware energy and spectrum efficient RSCA scheme in offline SDM-EON

• Published in: Optical fiber technology Vol. 63; p. 102502
• Main Authors: Halder, Joy, Paira, Smita, Acharya, Tamaghna, Bhattacharya, Uma
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 01-05-2021
• Subjects: Crosstalk; Genetic algorithm; MILP; Power consumption; SDM-EON; Spectrum utilization; Spectrum utilization; SDM-EON; Power consumption; MILP; Genetic algorithm; Crosstalk
• ISSN: 1068-5200; 1095-9912
• DOI: 10.1016/j.yofte.2021.102502

•This paper proposes an offline energy and spectrum efficient RSCA scheme in SDM-EON.•The demanded spectrum is allocated into multiple cores in the links which improves the spectrum utilization compared to the existing work.•MILP formulation for small scale and Genetic algorithm based heuristic for large scale model is proposed.
This paper proposes a methodology E-S-RSCA to integrate energy efficiency with spectrum efficient design of crosstalk aware routing, spectrum and core assignment (RSCA) schemes for offline traffic in space division multiplexed elastic optical network (SDM-EON) while allocating traffic in selected multiple cores in SDM-EON. Mixed Integer Linear Programming (MILP) model has been formulated for the scheme. The offline RSCA being an NP-hard problem is intractable in nature and a heuristic algorithm with polynomial run time complexity is developed. Simulation study of E-S-RSCA vis-à-vis MILP establishes near optimal performance of the heuristic. We also propose a spectrum efficient scheme S-RSCA in order to validate energy efficiency of E-S-RSCA. The scheme E-S-RSCA is compared with S-RSCA and also an existing work ex-S-RSCA (which allocates spectrum in selected single core of SDM-EON). It is observed that (i) E-S-RSCA consumes least energy due to its energy awareness and (ii) both the heuristics E-S-RSCA and S-RSCA (due to their multi-core allocation based approach) outperform ex-S-RSCA in terms of spectrum efficiency.