Variable weight code division multiple access system for monitoring vibration of unequally distributed points

Saleh Seyedzadeh, Ivan Glesk, Farzad Pour Rahimian, Wing C. Kwong

Research output: Contribution to conferencePaper

Abstract

The ever-growing demand for more accurate structural health monitoring of large scale facilities such as modern high-speed railways and bridges have resulted in the development of optical sensor networks (OSN), which help eliminate the disadvantages of conventional electric sensors, the most significant of which are sensitivity to electromagnetic interferences and larger sizes. The existing fibre optic infrastructures that are implanted mainly for communication purposes are not widely used by OSNs, due to the lack of appropriate multiplexing techniques. This study proposes an optical code division multiple access (OCDMA) system for support vibration sensing of unequally distributed points. The proposed system takes the advantages of spectral amplitude encoding (SAC) technique in providing differentiated services in physical layer by varying code weights. Simulation results monitoring three vibration sensor nodes with different distances are presented in the paper. The simulation and mathematical analysis indicate the suitability and simple implementation of the proposed system for supporting vibration sensing with high accuracy.

Conference

Conference21st International Conference on Transparent Optical Networks (ICTON 2019)
Abbreviated titleICTON 2019
CountryFrance
CityAngers
Period9/07/1913/07/19
Internet address

Fingerprint

Structural health monitoring
Optical sensors
Signal interference
Multiplexing
Sensor nodes
Code division multiple access
Fiber optics
Sensor networks
Monitoring
Communication
Sensors

Keywords

  • structural health
  • vibration sensing
  • optical sensing
  • optical code division multiple access
  • unequally distributed sensor nodes

Cite this

Seyedzadeh, S., Glesk, I., Pour Rahimian, F., & Kwong, W. C. (Accepted/In press). Variable weight code division multiple access system for monitoring vibration of unequally distributed points. Paper presented at 21st International Conference on Transparent Optical Networks (ICTON 2019), Angers, France.
Seyedzadeh, Saleh ; Glesk, Ivan ; Pour Rahimian, Farzad ; Kwong, Wing C. . / Variable weight code division multiple access system for monitoring vibration of unequally distributed points. Paper presented at 21st International Conference on Transparent Optical Networks (ICTON 2019), Angers, France.4 p.
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Seyedzadeh, S, Glesk, I, Pour Rahimian, F & Kwong, WC 2019, 'Variable weight code division multiple access system for monitoring vibration of unequally distributed points' Paper presented at 21st International Conference on Transparent Optical Networks (ICTON 2019), Angers, France, 9/07/19 - 13/07/19, .

Variable weight code division multiple access system for monitoring vibration of unequally distributed points. / Seyedzadeh, Saleh; Glesk, Ivan; Pour Rahimian, Farzad; Kwong, Wing C. .

2019. Paper presented at 21st International Conference on Transparent Optical Networks (ICTON 2019), Angers, France.

Research output: Contribution to conferencePaper

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T1 - Variable weight code division multiple access system for monitoring vibration of unequally distributed points

AU - Seyedzadeh, Saleh

AU - Glesk, Ivan

AU - Pour Rahimian, Farzad

AU - Kwong, Wing C.

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AB - The ever-growing demand for more accurate structural health monitoring of large scale facilities such as modern high-speed railways and bridges have resulted in the development of optical sensor networks (OSN), which help eliminate the disadvantages of conventional electric sensors, the most significant of which are sensitivity to electromagnetic interferences and larger sizes. The existing fibre optic infrastructures that are implanted mainly for communication purposes are not widely used by OSNs, due to the lack of appropriate multiplexing techniques. This study proposes an optical code division multiple access (OCDMA) system for support vibration sensing of unequally distributed points. The proposed system takes the advantages of spectral amplitude encoding (SAC) technique in providing differentiated services in physical layer by varying code weights. Simulation results monitoring three vibration sensor nodes with different distances are presented in the paper. The simulation and mathematical analysis indicate the suitability and simple implementation of the proposed system for supporting vibration sensing with high accuracy.

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KW - vibration sensing

KW - optical sensing

KW - optical code division multiple access

KW - unequally distributed sensor nodes

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M3 - Paper

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Seyedzadeh S, Glesk I, Pour Rahimian F, Kwong WC. Variable weight code division multiple access system for monitoring vibration of unequally distributed points. 2019. Paper presented at 21st International Conference on Transparent Optical Networks (ICTON 2019), Angers, France.