| 1. |
- Yan, Li, 1988, et al.
(författare)
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Power Optimization in Nonlinear Flexible-Grid Optical Networks
- 2015
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Ingår i: 41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015. - 9788460817413 ; 2015-November
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Konferensbidrag (refereegranskat)abstract
- The routing and spectrum assignment in nonlinear flexible-grid networks is extended byoptimizing the power separately for each connection. This yields 24% bandwidth reduction for largenetworks. An Optimization formulation and decomposition strategy are proposed to solve the problem.
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| 2. |
- Zhao, Juzi, 1986, et al.
(författare)
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Code Rate Optimization in Elastic Optical Networks
- 2015
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Ingår i: 41st European Conference on Optical Communication, ECOC 2015, Valencia, Spain, 27 September - 1 October 2015. - 9788460817413 ; 2015-November
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Konferensbidrag (refereegranskat)abstract
- We combine adaptive coding with nonlinear impairment-aware routing and spectrum allocationproblem in elastic optical networks. An integer linear program formulation and low-complexityheuristics are proposed. Results indicate that over 50% bandwidth reduction can be obtained due tocode-rate optimization.
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| 3. |
- Zhao, Juzi, 1986, et al.
(författare)
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Nonlinear impairment aware resource allocation in elastic optical networks
- 2015
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Ingår i: 2015 Optical Fiber Communications Conference and Exhibition, OFC 2015; Los Angeles; United States; 22 March 2015 through 26 March 2015. - Washington, D.C. : OSA. - 9781557529374 ; June 2015:7121502
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Konferensbidrag (refereegranskat)abstract
- We propose a novel integer linear program formulation and low-complexity heuristics for nonlinear impairment-aware routing and spectrum allocation in OOFDM-based elastic optical networks. Results indicate 23% bandwidth reduction compared with a transmission reach-based benchmark method.
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| 4. |
- Zhao, Juzi, 1986, et al.
(författare)
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Nonlinear Impairment-Aware Static Resource Allocation in Elastic Optical Networks
- 2015
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Ingår i: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 33:22, s. 4554-4564
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Tidskriftsartikel (refereegranskat)abstract
- This paper studies the routing, modulation format, and spectrum allocation problem in elastic fiber-optical networks for static traffic. Elastic networks, based on Nyquist wavelength-division multiplexing or optical orthogonal frequency-division multiplexing, can efficiently utilize the optical fiber's bandwidth in an elastic manner by partitioning the bandwidth into hundreds or even thousands of subcarriers. Beside the amplified spontaneous emission noise, the nonlinear impairments of each connection is explicitly considered by utilizing an analytical model to calculate the nonlinear interference from other connections propagating in the same fibers. The objective of our work is to minimize the bandwidth, i.e., the number of used subcarriers across the network, while satisfying the demands on throughput and quality for all connections. A novel integer linear program formulation and low-complexity heuristics are proposed. Simulation results are presented to demonstrate the effectiveness of the proposed approaches. Compared with transmission reach-based benchmark methods, our methods can achieve up to 31% bandwidth reduction.
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