Performance analysis of different detection techniques in SAC-OCDMA systems

Optical Code Division Multiple Access (OCDMA) system is a perfect choice for satisfying high communication demand because of the all-optical processing, simplified network control, bandwidth efficiency and security of such system. One of the coding schemes of OCDMA is the Spectral Amplitude Codin...

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Main Author:	Norazimah, Mat Zain
Format:	Thesis
Language:	English
Subjects:	Optical Code Division Multiple Access (OCDMA) SAC-OCDMA system SAC-OCDMA system > Analysis Detection technique Spectral Amplitude Coding OCDMA (SAC-OCDMA)
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/1/p.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/2/Full%20text.pdf
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spelling	my-unimap-443022016-12-02T07:25:27Z Performance analysis of different detection techniques in SAC-OCDMA systems Norazimah, Mat Zain Prof. Dr. Syed Alwee Al Junid Optical Code Division Multiple Access (OCDMA) system is a perfect choice for satisfying high communication demand because of the all-optical processing, simplified network control, bandwidth efficiency and security of such system. One of the coding schemes of OCDMA is the Spectral Amplitude Coding OCDMA (SAC-OCDMA). This study focused on the SAC-OCDMA system, which recently received increasing attention because of its robust performance, phase insensitivity and flexible bandwidth provisioning. This study aimed to analyze the performance of SAC-OCDMA system’s codes with cross-correlation, particularly Enhanced Double Weight (EDW) and Modified Double Weight (MDW) codes, by using direct detection technique, AND subtraction detection technique as well as modified-AND subtraction detection technique. Theoretical and simulation analyses using Optisystem Version 7.0 software were performed with reference to the parameters in the ITU-T G.652 standard. Analysis results show that the use of an ideal detection technique is more efficient than using the right type of code in reducing bit error rates (BERs) as well as eliminating multiple access interference (MAI) and phase induced intensity noise (PIIN). At 100 users, the BERs of the MDW code with the AND subtraction detection technique and modified- AND subtraction detection technique are and , respectively. Whereas, the BER of EDW and MDW codes that utilized the modified-AND subtraction technique are and respectively. The performances of EDW and MDW codes present different outcomes depending on the parameter analyzed. The modified-AND subtraction detection technique shows better performance than AND subtraction and direct detection techniques. The effectiveness of a SAC-OCDMA system in long-distance transmission with only single Light Emitting Diode (LED) and one optical amplifier was also verified. In long-distance transmission, the modified-AND subtraction detection technique exhibits a better performance than the AND subtraction detection technique. For the same quality of service at a BER of , the modified-AND subtraction detection technique allows 46.98% and 24.21% longer transmission distance than the AND subtraction detection technique with MDW code and EDW code, respectively. Hence, the ideal type of detection should be the focus in SAC-OCDMA systems to reduce BER, MAI and PIIN furthermore, optimize the system greatly and effectively. Universiti Malaysia Perlis (UniMAP) 2014 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/44302 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/1/p.1-24.pdf 5e2f7b51ebb53eac107ce3d5b205b179 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/2/Full%20text.pdf 71e70053ec80c067b64935877e274fe9 Optical Code Division Multiple Access (OCDMA) SAC-OCDMA system SAC-OCDMA system -- Analysis Detection technique Spectral Amplitude Coding OCDMA (SAC-OCDMA) School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Prof. Dr. Syed Alwee Al Junid
topic	Optical Code Division Multiple Access (OCDMA) SAC-OCDMA system SAC-OCDMA system -- Analysis Detection technique Spectral Amplitude Coding OCDMA (SAC-OCDMA)
spellingShingle	Optical Code Division Multiple Access (OCDMA) SAC-OCDMA system SAC-OCDMA system -- Analysis Detection technique Spectral Amplitude Coding OCDMA (SAC-OCDMA) Norazimah, Mat Zain Performance analysis of different detection techniques in SAC-OCDMA systems
description	Optical Code Division Multiple Access (OCDMA) system is a perfect choice for satisfying high communication demand because of the all-optical processing, simplified network control, bandwidth efficiency and security of such system. One of the coding schemes of OCDMA is the Spectral Amplitude Coding OCDMA (SAC-OCDMA). This study focused on the SAC-OCDMA system, which recently received increasing attention because of its robust performance, phase insensitivity and flexible bandwidth provisioning. This study aimed to analyze the performance of SAC-OCDMA system’s codes with cross-correlation, particularly Enhanced Double Weight (EDW) and Modified Double Weight (MDW) codes, by using direct detection technique, AND subtraction detection technique as well as modified-AND subtraction detection technique. Theoretical and simulation analyses using Optisystem Version 7.0 software were performed with reference to the parameters in the ITU-T G.652 standard. Analysis results show that the use of an ideal detection technique is more efficient than using the right type of code in reducing bit error rates (BERs) as well as eliminating multiple access interference (MAI) and phase induced intensity noise (PIIN). At 100 users, the BERs of the MDW code with the AND subtraction detection technique and modified- AND subtraction detection technique are and , respectively. Whereas, the BER of EDW and MDW codes that utilized the modified-AND subtraction technique are and respectively. The performances of EDW and MDW codes present different outcomes depending on the parameter analyzed. The modified-AND subtraction detection technique shows better performance than AND subtraction and direct detection techniques. The effectiveness of a SAC-OCDMA system in long-distance transmission with only single Light Emitting Diode (LED) and one optical amplifier was also verified. In long-distance transmission, the modified-AND subtraction detection technique exhibits a better performance than the AND subtraction detection technique. For the same quality of service at a BER of , the modified-AND subtraction detection technique allows 46.98% and 24.21% longer transmission distance than the AND subtraction detection technique with MDW code and EDW code, respectively. Hence, the ideal type of detection should be the focus in SAC-OCDMA systems to reduce BER, MAI and PIIN furthermore, optimize the system greatly and effectively.
format	Thesis
author	Norazimah, Mat Zain
author_facet	Norazimah, Mat Zain
author_sort	Norazimah, Mat Zain
title	Performance analysis of different detection techniques in SAC-OCDMA systems
title_short	Performance analysis of different detection techniques in SAC-OCDMA systems
title_full	Performance analysis of different detection techniques in SAC-OCDMA systems
title_fullStr	Performance analysis of different detection techniques in SAC-OCDMA systems
title_full_unstemmed	Performance analysis of different detection techniques in SAC-OCDMA systems
title_sort	performance analysis of different detection techniques in sac-ocdma systems
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/1/p.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44302/2/Full%20text.pdf
_version_	1747836832679198720

Performance analysis of different detection techniques in SAC-OCDMA systems

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