Design of graphical user interface for multiuser SAC-OCDMA performance analysis

The transmission of data by multiple users simultaneously using various multiple access techniques over fibre optic communication has been studied in several literatures. It provides high data rates and leads to high total throughputs while taking advantage of high speed in optic fibre. In multiuser...

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Main Author:	H Abdlkarem, Najla.
Format:	Thesis
Language:	English English
Published:	2015
Subjects:	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
Online Access:	http://eprints.uthm.edu.my/1387/1/24p%20NAJLA.%20H%20ABDLKAREM.pdf http://eprints.uthm.edu.my/1387/2/NAJLA.%20H%20ABDLKAREM%20WATERMARK.pdf
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spelling	my-uthm-ep.13872021-10-03T06:38:28Z Design of graphical user interface for multiuser SAC-OCDMA performance analysis 2015-01 H Abdlkarem, Najla. TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television The transmission of data by multiple users simultaneously using various multiple access techniques over fibre optic communication has been studied in several literatures. It provides high data rates and leads to high total throughputs while taking advantage of high speed in optic fibre. In multiuser transmission using OCDMA, many codewords are sent simultaneously over the channel as a result of many active users and this can cause multi-user access interference between users. Spectral-amplitude-coding (SAC) OCDMA is used to cancel the effect of multiuser access interference using code sequence with in-phase cross correlation. Several OCDMA based on SAC OCDMA codes such as. Quadratic Congruence (QC), Extended Quadratic Congruence (EQC) and Modified Quadratic Congruence (MQC) proportion were investigated further and implemented. Furthermore, in the SAC-OCDMA, appropriate detection technique is required to reduce the multi-user access interference between users and extraction of user data. Three detection technique were considered AND, modified-AND and single photodiode detection (SPD) technique. In this project, the graphical user interface (GUI) was developed for multi-user OCDMA performance analysis using the matlab platform. This allowed for comparison in terms of length of code, data rate for multiple users.In addition , the performance of the decoder which is implemented using fiber Bragg gratings (FBGs) for the three detection techniques using numerical analysis have been developed for the GUI. The numerical analysis is based on the SNR and BER for the system in the presence of thermal noise, shot noise and phase induced intensity noise. Finally, The developed is GUI used to compare the performance of the QC, EQC and MQC codes, AND, modified-AND and SPD detection techniques. Result shows that MQC outperforms EQ and EQC codes when many active users transmitting. The SPD detection technique when modified double weight (MDW) code was used. has a better BER and SNR compared to the modified-AND and AND detection technique. 2015-01 Thesis http://eprints.uthm.edu.my/1387/ http://eprints.uthm.edu.my/1387/1/24p%20NAJLA.%20H%20ABDLKAREM.pdf text en public http://eprints.uthm.edu.my/1387/2/NAJLA.%20H%20ABDLKAREM%20WATERMARK.pdf text en validuser mphil masters Universiti Tun Hussein Onn Malaysia Faculty of Electrical and Electronic Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English
topic	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
spellingShingle	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television H Abdlkarem, Najla. Design of graphical user interface for multiuser SAC-OCDMA performance analysis
description	The transmission of data by multiple users simultaneously using various multiple access techniques over fibre optic communication has been studied in several literatures. It provides high data rates and leads to high total throughputs while taking advantage of high speed in optic fibre. In multiuser transmission using OCDMA, many codewords are sent simultaneously over the channel as a result of many active users and this can cause multi-user access interference between users. Spectral-amplitude-coding (SAC) OCDMA is used to cancel the effect of multiuser access interference using code sequence with in-phase cross correlation. Several OCDMA based on SAC OCDMA codes such as. Quadratic Congruence (QC), Extended Quadratic Congruence (EQC) and Modified Quadratic Congruence (MQC) proportion were investigated further and implemented. Furthermore, in the SAC-OCDMA, appropriate detection technique is required to reduce the multi-user access interference between users and extraction of user data. Three detection technique were considered AND, modified-AND and single photodiode detection (SPD) technique. In this project, the graphical user interface (GUI) was developed for multi-user OCDMA performance analysis using the matlab platform. This allowed for comparison in terms of length of code, data rate for multiple users.In addition , the performance of the decoder which is implemented using fiber Bragg gratings (FBGs) for the three detection techniques using numerical analysis have been developed for the GUI. The numerical analysis is based on the SNR and BER for the system in the presence of thermal noise, shot noise and phase induced intensity noise. Finally, The developed is GUI used to compare the performance of the QC, EQC and MQC codes, AND, modified-AND and SPD detection techniques. Result shows that MQC outperforms EQ and EQC codes when many active users transmitting. The SPD detection technique when modified double weight (MDW) code was used. has a better BER and SNR compared to the modified-AND and AND detection technique.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	H Abdlkarem, Najla.
author_facet	H Abdlkarem, Najla.
author_sort	H Abdlkarem, Najla.
title	Design of graphical user interface for multiuser SAC-OCDMA performance analysis
title_short	Design of graphical user interface for multiuser SAC-OCDMA performance analysis
title_full	Design of graphical user interface for multiuser SAC-OCDMA performance analysis
title_fullStr	Design of graphical user interface for multiuser SAC-OCDMA performance analysis
title_full_unstemmed	Design of graphical user interface for multiuser SAC-OCDMA performance analysis
title_sort	design of graphical user interface for multiuser sac-ocdma performance analysis
granting_institution	Universiti Tun Hussein Onn Malaysia
granting_department	Faculty of Electrical and Electronic Engineering
publishDate	2015
url	http://eprints.uthm.edu.my/1387/1/24p%20NAJLA.%20H%20ABDLKAREM.pdf http://eprints.uthm.edu.my/1387/2/NAJLA.%20H%20ABDLKAREM%20WATERMARK.pdf
_version_	1747830779296088064

Design of graphical user interface for multiuser SAC-OCDMA performance analysis

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