Performance analysis of two dimensional wavelength/time OCDMA system for optical network

The major interference factor in an Optical Code-Division Multiple-Access System (OCDMA) is the noise in the form of Multiple Access Interference (MAI), which induces the occurrence of Bit Error Rate (BER). Phase Induced Intensity Noise (PIIN) is the dominant noise in the receiver that is closely r...

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Format:	Thesis
Language:	English
Subjects:	Code division multiple access Optical communication Optical Code-Division Multiple-Access System (OCDMA) Noise Optical network
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/4/Israa%20Shibab.pdf
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spelling	my-unimap-779782023-03-06T01:34:19Z Performance analysis of two dimensional wavelength/time OCDMA system for optical network Syed Alwee Al Junid, Syed Junid, Prof. Dr. The major interference factor in an Optical Code-Division Multiple-Access System (OCDMA) is the noise in the form of Multiple Access Interference (MAI), which induces the occurrence of Bit Error Rate (BER). Phase Induced Intensity Noise (PIIN) is the dominant noise in the receiver that is closely related to MAI. The use of an ideal code with minimum cross-correlation will mitigate MAI, reduce PIIN, and expand code scalability. Many codes have been proposed for One-Dimension (1-D) systems. These involve exploiting the wavelength or time resource. However, some of these codes have fixed or zero cross-correlation property which cancels out the MAI. However, the performance is still affected by the PIIN. 1-D codes need a very long code length when there is a high cardinality. Therefore, the objectives of the thesis are, first, investigate the OCDMA codes to enhance the performance and decrease the required code length, such as the 2-D Perfect Difference (PD) code, and Wavelength/Time (W/T) 2-D Modified Double Weight - MDW), second the implementation and analysis of two-dimensional (2-D) codes for an OCDMA system via simulation. The thesis starts with an explicit construction of an incoherent 2-D MDW OCDMA system with the allocation of wavelength and time dimensions resource to achieving performance goals and design parameters. The study of the properties of the code include a consideration of the scientific functions of the performance by analyzing various parameters such as the output signal spectrum and BER versus the length of the fibre, the number of users, data rate, the use of Avalanche Photo-Detectors (APD) in the receiver, and the effective received power ( srP ). Secondly, the 2-D MDW OCDMA code is designed in simulation. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77978 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/1/Page%201-24.pdf c23daf7d2dac3b20ad15e0e75a3b6f18 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/2/Full%20text.pdf 4c028d167f5f0f0cfc6b3124072e307f http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/4/Israa%20Shibab.pdf e4c9a5e1f44de24fde242dc282deb88b Universiti Malaysia Perlis (UniMAP) Code division multiple access Optical communication Optical Code-Division Multiple-Access System (OCDMA) Noise Optical network School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Syed Alwee Al Junid, Syed Junid, Prof. Dr.
topic	Code division multiple access Optical communication Optical Code-Division Multiple-Access System (OCDMA) Noise Optical network
spellingShingle	Code division multiple access Optical communication Optical Code-Division Multiple-Access System (OCDMA) Noise Optical network Performance analysis of two dimensional wavelength/time OCDMA system for optical network
description	The major interference factor in an Optical Code-Division Multiple-Access System (OCDMA) is the noise in the form of Multiple Access Interference (MAI), which induces the occurrence of Bit Error Rate (BER). Phase Induced Intensity Noise (PIIN) is the dominant noise in the receiver that is closely related to MAI. The use of an ideal code with minimum cross-correlation will mitigate MAI, reduce PIIN, and expand code scalability. Many codes have been proposed for One-Dimension (1-D) systems. These involve exploiting the wavelength or time resource. However, some of these codes have fixed or zero cross-correlation property which cancels out the MAI. However, the performance is still affected by the PIIN. 1-D codes need a very long code length when there is a high cardinality. Therefore, the objectives of the thesis are, first, investigate the OCDMA codes to enhance the performance and decrease the required code length, such as the 2-D Perfect Difference (PD) code, and Wavelength/Time (W/T) 2-D Modified Double Weight - MDW), second the implementation and analysis of two-dimensional (2-D) codes for an OCDMA system via simulation. The thesis starts with an explicit construction of an incoherent 2-D MDW OCDMA system with the allocation of wavelength and time dimensions resource to achieving performance goals and design parameters. The study of the properties of the code include a consideration of the scientific functions of the performance by analyzing various parameters such as the output signal spectrum and BER versus the length of the fibre, the number of users, data rate, the use of Avalanche Photo-Detectors (APD) in the receiver, and the effective received power ( srP ). Secondly, the 2-D MDW OCDMA code is designed in simulation.
format	Thesis
title	Performance analysis of two dimensional wavelength/time OCDMA system for optical network
title_short	Performance analysis of two dimensional wavelength/time OCDMA system for optical network
title_full	Performance analysis of two dimensional wavelength/time OCDMA system for optical network
title_fullStr	Performance analysis of two dimensional wavelength/time OCDMA system for optical network
title_full_unstemmed	Performance analysis of two dimensional wavelength/time OCDMA system for optical network
title_sort	performance analysis of two dimensional wavelength/time ocdma system for optical network
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/77978/4/Israa%20Shibab.pdf
_version_	1776104238785495040

Performance analysis of two dimensional wavelength/time OCDMA system for optical network

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