OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network

Optical code division multiple access (OCDMA) system has provides immense opportunity for all optical access networks regarding the flexibility, asynchronous access, high-volume transmission capacity, simple network control and increasing the security. This thesis deploys OCDMA technology to design...

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Format:	Thesis
Language:	English
Subjects:	Passive optical networks Optical fiber communication Optical communication Computer networks Communication > Computer networks Optical Code Division Multiple Access (OCDMA) Coordinate Systems
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/4/SM%20Monirul.pdf
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id	my-unimap-72605
record_format	uketd_dc
spelling	my-unimap-726052022-11-24T06:47:03Z OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network Nasim, Ahmed, Dr. Optical code division multiple access (OCDMA) system has provides immense opportunity for all optical access networks regarding the flexibility, asynchronous access, high-volume transmission capacity, simple network control and increasing the security. This thesis deploys OCDMA technology to design a new hybrid (OCDMA over WDM) system and comparing the performance in different detection techniques with different data rates. To design a new OCDMA over WDM system, code selection is a concerning part for getting better system performance with high security. In this thesis, detection techniques used Modified Double Weight Code (MDW) as signature code. In OCDMA systems, generally the cross-correlation functions created that causes multiple access inference noise. Multiple Access Interference (MAI) is type of interference caused by multiple cellular users who are using the same frequency allocation at the same time. To mitigate this MAI issue, detection technique is used throughout the thesis. Advanced modulation technique is applied to increase the system performance with high bit-error-rates (≤10-10). The investigated results obtained by using direct detection, AND subtraction detection and complementary subtraction detection techniques for similar number of active users. Detection properties of short noise, thermal noise and phase-induced intensity noise are considered simultaneously for performance analysis. System simulation performance are carried out some design parameters such as bit-error-rate, distance, input power, received power, channel spacing. To compare the simulation results we have to integrate commercial optical simulator “Optisystem” version 12. Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72605 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/1/Page%201-24.pdf c1022338b0d2a7cf7db8afaf20082b90 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/2/Full%20text.pdf 38e20164b4d7c24fcdb559edd3777aef http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/4/SM%20Monirul.pdf 7df4dc96bc859b43ad0672ff92a2e2b6 Universiti Malaysia Perlis (UniMAP) Passive optical networks Optical fiber communication Optical communication Computer networks Communication -- Computer networks Optical Code Division Multiple Access (OCDMA) Coordinate Systems School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Nasim, Ahmed, Dr.
topic	Passive optical networks Optical fiber communication Optical communication Computer networks Communication -- Computer networks Optical Code Division Multiple Access (OCDMA) Coordinate Systems
spellingShingle	Passive optical networks Optical fiber communication Optical communication Computer networks Communication -- Computer networks Optical Code Division Multiple Access (OCDMA) Coordinate Systems OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network
description	Optical code division multiple access (OCDMA) system has provides immense opportunity for all optical access networks regarding the flexibility, asynchronous access, high-volume transmission capacity, simple network control and increasing the security. This thesis deploys OCDMA technology to design a new hybrid (OCDMA over WDM) system and comparing the performance in different detection techniques with different data rates. To design a new OCDMA over WDM system, code selection is a concerning part for getting better system performance with high security. In this thesis, detection techniques used Modified Double Weight Code (MDW) as signature code. In OCDMA systems, generally the cross-correlation functions created that causes multiple access inference noise. Multiple Access Interference (MAI) is type of interference caused by multiple cellular users who are using the same frequency allocation at the same time. To mitigate this MAI issue, detection technique is used throughout the thesis. Advanced modulation technique is applied to increase the system performance with high bit-error-rates (≤10-10). The investigated results obtained by using direct detection, AND subtraction detection and complementary subtraction detection techniques for similar number of active users. Detection properties of short noise, thermal noise and phase-induced intensity noise are considered simultaneously for performance analysis. System simulation performance are carried out some design parameters such as bit-error-rate, distance, input power, received power, channel spacing. To compare the simulation results we have to integrate commercial optical simulator “Optisystem” version 12.
format	Thesis
title	OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network
title_short	OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network
title_full	OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network
title_fullStr	OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network
title_full_unstemmed	OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network
title_sort	ocdma over wdm system using dpsk modulation technique for gigabit passive optical network
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72605/4/SM%20Monirul.pdf
_version_	1776104224892911616

OCDMA over WDM system using DPSK modulation technique for gigabit passive optical network

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