Nature-Inspired-Based Multi-Objective Hybrid Algorithms to Find Near-OGRs for Optical WDM Systems and Their Comparison

2018 ◽  
pp. 175-211 ◽  
Author(s):  
Shonak Bansal
Keyword(s):  
Wavelength Division Multiplexing ◽  
Channel Allocation ◽  
Statistical Tests ◽  
Computation Time ◽  
Wavelength Division ◽  
Multi Objective ◽  
Optical Wdm ◽  
Complete Problems ◽  
Golomb Rulers ◽  
Bandwidth Expansion

Nature-inspired-based approaches are powerful optimizing algorithms to solve the NP-complete problems having multiple objectives. In this chapter, two nature-inspired-based multi-objective optimization algorithms (MOAs) and their hybrid forms are proposed to find the optimal Golomb rulers (OGRs) in a reasonable time. The OGRs can be used as a channel-allocation algorithm that allows suppression of the four-wave mixing crosstalk in optical wavelength division multiplexing systems. The presented results conclude that the proposed MOAs outperforms the existing conventional classical and nature-inspired-based algorithms to find near-OGRs in terms of ruler length, total occupied optical bandwidth, bandwidth expansion factor, computation time, and computational complexity. In order to find the superiority of proposed MOAs, the performances of the proposed algorithms are also analyzed by using statistical tests.

Nature-Inspired-Based Modified Multi-Objective BB-BC Algorithm to Find Near-OGRs for Optical WDM Systems and Its Performance Comparison

2018 ◽  
pp. 1-25 ◽  
Author(s):  
Shonak Bansal ◽  
Kuldeep Sharma
Keyword(s):  
Optimization Algorithm ◽  
Statistical Tests ◽  
Big Bang ◽  
Performance Comparison ◽  
Optical Channel ◽  
Wavelength Division ◽  
Multi Objective ◽  
Optical Wdm ◽  
Golomb Rulers ◽  
Quadratic Congruence

Multi-objective nature-inspired-based approaches are powerful optimizing algorithms to solve the multiple objectives in NP-complete engineering design problems. This chapter proposes a nature-inspired-based modified multi-objective big bang-big crunch (M-MOBB-BC) optimization algorithm to find the Optimal Golomb rulers (OGRs) in a reasonable timeframe. The OGRs have their important application as channel-allocation algorithm that allow suppression of the four-wave mixing crosstalk in optical wavelength division multiplexing systems. The presented simulation results conclude that the proposed hybrid algorithm is superior to the existing conventional classical algorithms, namely extended quadratic congruence and search algorithm and nature-inspired-based algorithms, namely genetic algorithms, biogeography-based optimization, and simple BB-BC optimization algorithm to find near-OGRs in terms of ruler length, total occupied optical channel bandwidth, bandwidth expansion factor, computation time, computational complexity, and non-parametric statistical tests.

scholarly journals Nature–inspired metaheuristic algorithms to find near–OGR sequences for WDM channel allocation and their performance comparison

2017 ◽  
Vol 15 (1) ◽  
pp. 520-547 ◽  
Author(s):  
Shonak Bansal ◽  
Neena Gupta ◽  
Arun Kumar Singh
Keyword(s):  
Wavelength Division Multiplexing ◽  
Channel Allocation ◽  
Statistical Tests ◽  
Optimization Algorithms ◽  
Performance Comparison ◽  
Metaheuristic Algorithms ◽  
Optical Channel ◽  
Complete Problems ◽  
Simulation Results ◽  
Nature Inspired Algorithms

Abstract Nowadays, nature–inspired metaheuristic algorithms are most powerful optimizing algorithms for solving the NP–complete problems. This paper proposes three approaches to find near–optimal Golomb ruler sequences based on nature–inspired algorithms in a reasonable time. The optimal Golomb ruler (OGR) sequences found their application in channel–allocation method that allows suppression of the crosstalk due to four–wave mixing in optical wavelength division multiplexing systems. The simulation results conclude that the proposed nature–inspired metaheuristic optimization algorithms are superior to the existing conventional and nature–inspired algorithms to find near–OGRs in terms of ruler length, total optical channel bandwidth, computation time, and computational complexity. Based on the simulation results, the performance of proposed different nature–inspired metaheuristic algorithms are being compared by using statistical tests. The statistical test results conclude the superiority of the proposed nature–inspired optimization algorithms.

INVESTIGATIONS OF FIBER NONLINEARITIES IN LONG-HAUL OPTICAL WDM TRANSMISSION SYSTEMS

2009 ◽  
Vol 18 (02) ◽  
pp. 301-308
Author(s):  
GURMEET KAUR ◽  
M. L. SINGH ◽  
M. S. PATTERH
Keyword(s):  
Wavelength Division Multiplexing ◽  
Input Power ◽  
Fiber Amplifiers ◽  
Signal Attenuation ◽  
Fiber Nonlinearities ◽  
Wavelength Division ◽  
Optical Wdm ◽  
Electro Optic ◽  
Erbium Doped ◽  
Amplified Spontaneous Emission Noise

Wavelength division multiplexing (WDM) has been emerging as an effective technique for making use of the full bandwidth offered by optical fiber. To achieve long-haul transmission, erbium-doped fiber amplifiers (EDFAs) are employed to compensate for signal attenuation without using optoelectronic/electro-optic conversions. Transmission in these systems is limited by fiber nonlinearities and amplified spontaneous emission noise from amplifiers. In this paper, the long-haul optical WDM system with EDFAs is investigated theoretically. The noise and bit error rate (BER) characteristics of the system with optical amplifiers are calculated and the dependence of the BER on interamplifier separation and input power is shown.

scholarly journals The Gain of Performance of Optical WDM Networks

2008 ◽  
Vol 2008 ◽  
pp. 1-10
Author(s):  
Miroslav Bahleda ◽  
Karol Blunar
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Wavelength Conversion ◽  
Blocking Probability ◽  
Probability Model ◽  
Wdm Networks ◽  
Single Fiber ◽  
Conversion Degree ◽  
Wavelength Division ◽  
Optical Wdm

We study the blocking probability and performance of single-fiber and multifiber optical networks with wavelength division multiplexing (WDM). We extend the well-known analytical blocking probability model by Barry and Humblet to the general model, which is proposed for both single-fiber and multifiber network paths with any kind of wavelength conversion (no, limited, or full wavelength conversion) and for uniform and nonuniform link loads. We investigate the effect of the link load, wavelength conversion degree, and the number of wavelengths, fibers, and hops on blocking probability. We also extend the definition of the gain of wavelength conversion by Barry and Humblet to the gain of performance, which is fully general. Thanks to this definition and implementation of our model, we compare different WDM node architectures and present interesting results.

Optical Network Survivability

2008 ◽  
pp. 383-390
Author(s):  
N. S.C. Correia ◽  
M. C.R. Medeiros
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Network Survivability ◽  
Single Fiber ◽  
Fiber Failure ◽  
Wavelength Division ◽  
Optical Wdm ◽  
Service Interruption ◽  
Equipment Failures ◽  
Electrical Cables

The telecommunications world is evolving dramatically toward challenging scenarios where the fast and efficient transportation of information is becoming a key element in today’s society. Wavelength division multiplexing (WDM) technology has the potential to satisfy the ever-increasing bandwidth needs of the network users on a sustained basis (Mukherjee, 2000). Network operators must provide uninterrupted service to their customers, that is, network survivability must be guaranteed. This means that, networks must be able to handle link or fiber cuts as well as equipment failures, fact that influences the design and operation of networks (Gerstel & Ramaswami, 2000). When using WDM, survivability becomes even more important because of the huge amount of traffic carried by a single fiber. A single fiber failure, even for few seconds, can be catastrophic (Maier, Pattavina, Patre & Martinelli, 2002). This issue is actually very important since the optical WDM technology is now being deployed in the field. Network survivability is not just an academic subject. In real networks, failures happen quite frequently (fiber cuts, for example, are very common in terrestrial networks since they share other utility transport conduits, such as gas or water pipes and electrical cables, and are considered the least reliable component (Gerstel & Ramaswami, 2000; Maier, Pattavina, Patre & Martinelli, 2002). The prevention of service interruption, or the reduction of the service loss when failures occur, must now be an integral part of the network design and operations strategy or otherwise severe service losses can happen.

Theoretical Investigation of Optical WDM Network Performance in the Presence of FWM and ASE Noise

2017 ◽  
Vol 38 (1) ◽  
Author(s):  
Sridhar Iyer ◽  
Ambily Joy
Keyword(s):  
Quality Factor ◽  
Theoretical Investigation ◽  
Wavelength Division Multiplexing ◽  
Network Performance ◽  
Wavelength Division ◽  
Wdm Network ◽  
Optical Wdm ◽  
Optical Star

AbstractIn this article, for an optical star wavelength division multiplexing (WDM) network, with quality factor (

Control Traffic Flows and Differing Quality of Service with Reservation of Bandwidth in Optical Network

2011 ◽  
Vol 219-220 ◽  
pp. 1309-1312
Author(s):  
Ning Zhang
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Optical Network ◽  
Traffic Grooming ◽  
Wdm Networks ◽  
Wavelength Division ◽  
Optical Wdm Networks ◽  
Optical Wdm ◽  
High Bandwidth ◽  
Control Traffic

In this paper, a traffic flow control scheme is presented. Wavelength division multiplexing (WDM) technology have significantly increased the transmission capacity of today’s transport networks, and played an extremely important role in high-speed network. Since high bandwidth wavelength channels will be filled up by many low-speed traffic streams, efficiently provisioning customer connections with such diverse bandwidth needs is a very important problem and is also known as the traffic-grooming problem. Traffic grooming is an extremely important issue for next-generation optical WDM networks.

Optical Network Survivability

2011 ◽  
pp. 376-384
Author(s):  
N. S.C. Correia
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Network Survivability ◽  
Single Fiber ◽  
Fiber Failure ◽  
Wavelength Division ◽  
Optical Wdm ◽  
Service Interruption ◽  
Equipment Failures ◽  
Electrical Cables

The telecommunications world is evolving dramatically toward challenging scenarios where the fast and efficient transportation of information is becoming a key element in today’s society. Wavelength division multiplexing (WDM) technology has the potential to satisfy the ever-increasing bandwidth needs of the network users on a sustained basis (Mukherjee, 2000). Network operators must provide uninterrupted service to their customers, that is, network survivability must be guaranteed. This means that networks must be able to handle link or fiber cuts as well as equipment failures, fact that influences the design and operation of networks (Gerstel & Ramaswami, 2000). When using WDM, survivability becomes even more important because of the huge amount of traffic carried by a single fiber. A single fiber failure, even for few seconds, can be catastrophic (Maier, Pattavina, Patre, & Martinelli, 2002). This issue is actually very important since the optical WDM technology is now being deployed in the field. Network survivability is not just an academic subject. In real networks, failures happen quite frequently (fiber cuts, for example, are very common in terrestrial networks since they share other utility transport conduits such as gas or water pipes and electrical cables, and are considered the least reliable component (Gerstel et al., 2000; Maier et al., 2002). The prevention of service interruption, or the reduction of the service loss when failures occur, must now be an integral part of the network design and operations strategy or otherwise severe service losses can happen.

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