Adaptive FEC-based lightpath routing and wavelength assignment in WDM optical networks

Li, Yongcheng; Dai, Hua; Shen, Gangxiang; Bose, Sanjay K.

doi:10.1016/j.osn.2014.05.021

Cited by 23 publications

(27 citation statements)

References 23 publications

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“…In our model, an adaptive FEC selection approach based on the OSNR of each lightpath is adopted. 7 After that, a serial-to-parallel (S/P) module converts the encoded high-bit-rate data stream to low-bit-rate parallel blocks of symbols. In this point, considering the possibility of transmission beyond 100 Gbps, an optional digital pulse shaper for reduced bandwidth occupancy could be induced.…”

Section: Block Diagram Of Ofdm Transmission Systemmentioning

confidence: 99%

“…Besides, an e®ective approach to compensate the OSNR degradation is with low hardware investment cost and high error-correction performance is the FEC coding technique. 4,7 This technique is based on adding redundant information previously to the modulation and transmission processes. The FEC techniques can be classi¯ed into three generations.…”

Section: Introductionmentioning

confidence: 99%

“…The improvement in the FEC performance is based on the growth of coding overhead, at the expense of the bandwidth occupied by the code. 7,8 In this sense, the FEC bandwidth consumption motivated the development of FEC attribution schemes aiming to optimize the system transmission capacity, such as in Ref. 7 in which an adaptive approach was proposed to choose the most e±cient FEC type (RS, RS/BCH and LDPC) for di®erent lightpaths based on their individual OSNR.…”

Section: Introductionmentioning

confidence: 99%

“…7,8 In this sense, the FEC bandwidth consumption motivated the development of FEC attribution schemes aiming to optimize the system transmission capacity, such as in Ref. 7 in which an adaptive approach was proposed to choose the most e±cient FEC type (RS, RS/BCH and LDPC) for di®erent lightpaths based on their individual OSNR. The simulation results indicated that compared to the non-adaptive case, using the proposed adaptive FEC selection scheme could signi¯cantly reduce the required FEC overhead.…”

Section: Introductionmentioning

confidence: 99%

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Energy Efficiency Analysis in Adaptive FEC-Based Lightpath Elastic Optical Networks

Durand

Abrão

2015

J CIRCUIT SYST COMP

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In this paper, an energy e±ciency (EE) analysis for elastic optical networks (EONs) considering the adaptive allocation of the transmitted power, spectrum bandwidth, modulation format and forward error correction (FEC) type has been proposed. The trade-o® between the FEC coding types and the optical layer EE (OL-EE) was investigated considering the capacity of information transmission and power consumption. The power consumption model considers elements involved in the lightpath establishment, namely transmitter, receiver, bandwidthvariable optical crossconnect (BV-OXC), optical ampli¯ers and network control. Numerical examples have demonstrated EE increasing for the lightpaths when adaptive FEC coding is deployed; furthermore, the EE varies with the distance of the optical network nodes and hop count. In this sense, it is observed that the EE decreases with the increasing of FEC energy per bit consumption; however, an operation region is veri¯ed in which the overall EE network with FEC is superior to the system without FEC coding. After this point, the increases in the FEC energy per bit consumption will a®ect negatively the EE metric. For instance, with the proposed OL-EE model it is possible to determinate the maximum energy consumption allowed to the FEC codes without OL-EE system degradation.

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Section: Block Diagram Of Ofdm Transmission Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy Efficiency Analysis in Adaptive FEC-Based Lightpath Elastic Optical Networks

Durand

Abrão

2015

J CIRCUIT SYST COMP

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“…In variable-code-rate transceivers, however, the trade-off relationships are considerably more complex. Recently, the first works on variable-rate coding for optical transmission [4], [5], [6], [7] and optical networking [8], [9], [10] have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Parameter selection in optical networks with variable-code-rate transceivers

Mello¹,

Souza²,

Reis

et al. 2015

2015 International Conference on Optical Network Design and Modeling (ONDM)

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Future flexible transceivers will be able to adjust modulation format, symbol rate and FEC scheme according to the channel and network conditions. This paper uses a combination of theoretical derivations and experimental results to recommend the best set of parameters to satisfy a specific demand to be routed along the network. In particular, for a given required OSNR (which is related to reach) and desired net bit rate, and assuming a capacity-achieving FEC scheme, the paper provides the set of modulation format, symbol rate and code rate which requires the minimum bandwidth, while offering an arbitrarily low bit error rate. We observed that optimum operating points required FEC schemes with overheads ranging from almost 0 to 100%, which is an important guideline for future flexible optical communications systems.

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A Genetic Algorithm Approach for Static Routing and Wavelength Assignment in All-Optical WDM Networks

Teixeira

Batista

Cardoso

et al. 2017

Progress in Artificial Intelligence

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Adaptive FEC-based lightpath routing and wavelength assignment in WDM optical networks

Cited by 23 publications

References 23 publications

Energy Efficiency Analysis in Adaptive FEC-Based Lightpath Elastic Optical Networks

Energy Efficiency Analysis in Adaptive FEC-Based Lightpath Elastic Optical Networks

Parameter selection in optical networks with variable-code-rate transceivers

A Genetic Algorithm Approach for Static Routing and Wavelength Assignment in All-Optical WDM Networks

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