2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system

The explosive growth of bandwidth demand, together with advance in latest communication services and emerging applications has inspired huge interest in application of code division multiple access (CDMA) technique in optical network. As a core of an optical code division multiple access (OCDMA)...

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Format:	Thesis
Language:	English
Subjects:	Code division multiple access Wavelength division multiplexing Optical communications
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/3/Declaration%20Form.pdf
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spelling	my-unimap-767422022-11-08T03:23:49Z 2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system Mohd Rashidi, Che Beson, Dr. The explosive growth of bandwidth demand, together with advance in latest communication services and emerging applications has inspired huge interest in application of code division multiple access (CDMA) technique in optical network. As a core of an optical code division multiple access (OCDMA) system, several multiple access techniques have been created for optical fiber correspondence. The aim of using OCDMA is to overcome the multiple access interference (MAI) noise and phase induced intensity noise (PIIN) which encourages the amount of bit error rate (BER). The MAI and PIIN can be reduced and suppress by using the perfect code property with minimum crosscorrelation. In this thesis, the incoherent two-dimensional (2-D) wavelength/time (W/T) modified double weight (MDW) code OCDMA is analysed and demonstrated. The allocation of W/T in this thesis is to make the system asynchronously continuous with time without any objection. The good result in optimum PIIN suppression in comparison within the proposed 2-D MDW code with other codes such as 2-D Perfect Difference Code (PDC) and 1-D MDW code. The 2-D W/T MDW code achieves high scalability with the improvement in term of cardinality, bit rate, bit error rate (BER) and distance. At 10-9 (BER), the code cardinality reaches 251 simultaneous number of users and the lowest effective received power ( ) is achieved at -16.5 dBm. By comparing within parameter; avalanche photodiode (APD) are achieved 19 km longer compare with PIIN photodiode there is 18 km in this system. Thus, the 2-D W/T MDW OCDMA code simulation has successfully reduced MAI and suppress PIIN which result in optical fiber length and effective received power. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/76742 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/1/Page%201-24.pdf e72bebacfd2defad2888d6b4292fb385 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/2/Full%20text.pdf aa329355e847d7f4988ecbb0fcf8f9a2 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/3/Declaration%20Form.pdf 7c2014fd84bf2f68cc35afdbc6546d44 Universiti Malaysia Perlis (UniMAP) Code division multiple access Wavelength division multiplexing Optical communications School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Mohd Rashidi, Che Beson, Dr.
topic	Code division multiple access Wavelength division multiplexing Optical communications
spellingShingle	Code division multiple access Wavelength division multiplexing Optical communications 2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system
description	The explosive growth of bandwidth demand, together with advance in latest communication services and emerging applications has inspired huge interest in application of code division multiple access (CDMA) technique in optical network. As a core of an optical code division multiple access (OCDMA) system, several multiple access techniques have been created for optical fiber correspondence. The aim of using OCDMA is to overcome the multiple access interference (MAI) noise and phase induced intensity noise (PIIN) which encourages the amount of bit error rate (BER). The MAI and PIIN can be reduced and suppress by using the perfect code property with minimum crosscorrelation. In this thesis, the incoherent two-dimensional (2-D) wavelength/time (W/T) modified double weight (MDW) code OCDMA is analysed and demonstrated. The allocation of W/T in this thesis is to make the system asynchronously continuous with time without any objection. The good result in optimum PIIN suppression in comparison within the proposed 2-D MDW code with other codes such as 2-D Perfect Difference Code (PDC) and 1-D MDW code. The 2-D W/T MDW code achieves high scalability with the improvement in term of cardinality, bit rate, bit error rate (BER) and distance. At 10-9 (BER), the code cardinality reaches 251 simultaneous number of users and the lowest effective received power ( ) is achieved at -16.5 dBm. By comparing within parameter; avalanche photodiode (APD) are achieved 19 km longer compare with PIIN photodiode there is 18 km in this system. Thus, the 2-D W/T MDW OCDMA code simulation has successfully reduced MAI and suppress PIIN which result in optical fiber length and effective received power.
format	Thesis
title	2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system
title_short	2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system
title_full	2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system
title_fullStr	2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system
title_full_unstemmed	2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system
title_sort	2-d wavelength/time mdw code optimization for cardinality enhancement in ocdma system
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/76742/3/Declaration%20Form.pdf
_version_	1776104274876432384

2-D wavelength/time MDW code optimization for cardinality enhancement in OCDMA system

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