The impact of physical layer impairment in survivability algorithms of elastic optical networks

2016 ◽  
Author(s):  
Jurandir Lacerda ◽  
Alexandre Fontinele ◽  
Igo Moura ◽  
Andre Soares
Keyword(s):  
Optical Networks ◽  
Physical Layer ◽  
The Impact

Energy-Efficient Routing and Spectrum Assignment Algorithm with Physical-Layer Impairments Constraint in Flexible Optical Networks

2017 ◽  
Vol 38 (4) ◽  
Author(s):  
Jijun Zhao ◽  
Nawa Zhang ◽  
Danping Ren ◽  
Jinhua Hu
Keyword(s):  
Energy Efficiency ◽  
Optical Networks ◽  
Energy Efficient ◽  
Blocking Probability ◽  
Physical Layer ◽  
Energy Efficient Routing ◽  
Spectrum Assignment ◽  
Physical Layer Impairments ◽  
Routing And Spectrum Assignment ◽  
The Impact

AbstractThe recently proposed flexible optical network can provide more efficient accommodation of multiple data rates than the current wavelength-routed optical networks. Meanwhile, the energy efficiency has also been a hot topic because of the serious energy consumption problem. In this paper, the energy efficiency problem of flexible optical networks with physical-layer impairments constraint is studied. We propose a combined impairment-aware and energy-efficient routing and spectrum assignment (RSA) algorithm based on the link availability, in which the impact of power consumption minimization on signal quality is considered. By applying the proposed algorithm, the connection requests are established on a subset of network topology, reducing the number of transitions from sleep to active state. The simulation results demonstrate that our proposed algorithm can improve the energy efficiency and spectrum resources utilization with the acceptable blocking probability and average delay.

scholarly journals WON-OCDMA System Based on MW-ZCC Codes for Applications in Optical Wireless Sensor Networks

Sensors ◽  
2021 ◽  
Vol 21 (2) ◽  
pp. 539
Author(s):  
Saleh Seyedzadeh ◽  
Andrew Agapiou ◽  
Majid Moghaddasi ◽  
Milan Dado ◽  
Ivan Glesk
Keyword(s):  
Optical Networks ◽  
Video Surveillance ◽  
Multiple Access ◽  
Optical Sensing ◽  
Multiple Access Interference ◽  
Service Differentiation ◽  
Sensor Data ◽  
Variable Weight ◽  
Code Division Multiple ◽  
The Impact

The growing demand for extensive and reliable structural health monitoring resulted in the development of advanced optical sensing systems (OSS) that in conjunction with wireless optical networks (WON) are capable of extending the reach of optical sensing to places where fibre provision is not feasible. To support this effort, the paper proposes a new type of a variable weight code called multiweight zero cross-correlation (MW-ZCC) code for its application in wireless optical networks based optical code division multiple access (WON-OCDMA). The code provides improved quality of service (QoS) and better support for simultaneous transmission of video surveillance, comms and sensor data by reducing the impact of multiple access interference (MAI). The MW-ZCC code’s power of two code-weight properties provide enhanced support for the needed service differentiation provisioning. The performance of this novel code has been studied by simulations. This investigation revealed that for a minimum allowable bit error rate of 10−3, 10−9 and 10−12 when supporting triple-play services (sensing, datacomms and video surveillance, respectively), the proposed WON-OCDMA using MW-ZCC codes could support up to 32 simultaneous services over transmission distances up to 32 km in the presence of moderate atmospheric turbulence.

A New DSP-Based Physical Layer Encryption Technique Applied to Passive Optical Networks

2018 ◽  
Author(s):  
Marcelo Luis Francisco Abbade ◽  
Leonardo Silva Lessa ◽  
Melissa de Oliveira Santos ◽  
Afonso Jose do Prado ◽  
Ivan Aldaya
Keyword(s):  
Optical Networks ◽  
Physical Layer ◽  
Passive Optical Networks ◽  
Physical Layer Encryption
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