Performance evaluation of OFDM and MC-CDMA based cognitive radio system

The present development of high data rate wireless applications has lead to extra bandwidth demand. However, finding a new spectrum bandwidth to accommodate these applications and services is a challenging task due to lack of spectrum resources. In fact, recent studies have shown that the spectrum a...

Full description

Saved in:

Bibliographic Details
Main Author:	Salem Bindhaiq, Salem Mohammed
Format:	Thesis
Language:	English
Published:	2012
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/32406/1/SalemMohamedMFKE2012.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.32406
record_format	uketd_dc
spelling	my-utm-ep.324062018-04-27T01:21:50Z Performance evaluation of OFDM and MC-CDMA based cognitive radio system 2012-06 Salem Bindhaiq, Salem Mohammed TK Electrical engineering. Electronics Nuclear engineering The present development of high data rate wireless applications has lead to extra bandwidth demand. However, finding a new spectrum bandwidth to accommodate these applications and services is a challenging task due to lack of spectrum resources. In fact, recent studies have shown that the spectrum are utilized inefficiently especially for conventional spectrum allocation. Therefore, in order to enhance spectrum efficiency, Federal Communications Commission (FCC) has proposed dynamic spectrum access (DSA) mechanism, where unlicensed users can opportunistically borrow unused spectrum from licensed owners. The radio that enables this concept is called Cognitive Radio (CR). Nevertheless, it is difficult for single transmission to get a large contiguous frequency spectrum block in DSA and this have significant impact on broadband and multi-carrier transmission systems such as Orthogonal Frequency Division Multiplexing (OFDM) and Multi-carrier Code Division Multiple Access (MC- CDMA). This thesis investigates on non-contiguous OFDM (NC-OFDM) and non-contiguous MC-CDMA (NC-MC-CDMA) system. The implementation of NC-OFDM and NC-MC-CDMA systems provide high data rate via large number of non-contiguous sub-carriers without interfering to the existing transmissions by turning off the sub-carriers corresponding to these spectrum bands. This thesis evaluates Bit Error Rate (BER) performance of NC-OFDM and NC-MC-CDMA on mobile scenario where each propagation path will experience an apparent shift in frequency due to the relative motion between the transmitter and receiver while the number null sub-carriers is constant for all. 2012-06 Thesis http://eprints.utm.my/id/eprint/32406/ http://eprints.utm.my/id/eprint/32406/1/SalemMohamedMFKE2012.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Salem Bindhaiq, Salem Mohammed Performance evaluation of OFDM and MC-CDMA based cognitive radio system
description	The present development of high data rate wireless applications has lead to extra bandwidth demand. However, finding a new spectrum bandwidth to accommodate these applications and services is a challenging task due to lack of spectrum resources. In fact, recent studies have shown that the spectrum are utilized inefficiently especially for conventional spectrum allocation. Therefore, in order to enhance spectrum efficiency, Federal Communications Commission (FCC) has proposed dynamic spectrum access (DSA) mechanism, where unlicensed users can opportunistically borrow unused spectrum from licensed owners. The radio that enables this concept is called Cognitive Radio (CR). Nevertheless, it is difficult for single transmission to get a large contiguous frequency spectrum block in DSA and this have significant impact on broadband and multi-carrier transmission systems such as Orthogonal Frequency Division Multiplexing (OFDM) and Multi-carrier Code Division Multiple Access (MC- CDMA). This thesis investigates on non-contiguous OFDM (NC-OFDM) and non-contiguous MC-CDMA (NC-MC-CDMA) system. The implementation of NC-OFDM and NC-MC-CDMA systems provide high data rate via large number of non-contiguous sub-carriers without interfering to the existing transmissions by turning off the sub-carriers corresponding to these spectrum bands. This thesis evaluates Bit Error Rate (BER) performance of NC-OFDM and NC-MC-CDMA on mobile scenario where each propagation path will experience an apparent shift in frequency due to the relative motion between the transmitter and receiver while the number null sub-carriers is constant for all.
format	Thesis
qualification_level	Master's degree
author	Salem Bindhaiq, Salem Mohammed
author_facet	Salem Bindhaiq, Salem Mohammed
author_sort	Salem Bindhaiq, Salem Mohammed
title	Performance evaluation of OFDM and MC-CDMA based cognitive radio system
title_short	Performance evaluation of OFDM and MC-CDMA based cognitive radio system
title_full	Performance evaluation of OFDM and MC-CDMA based cognitive radio system
title_fullStr	Performance evaluation of OFDM and MC-CDMA based cognitive radio system
title_full_unstemmed	Performance evaluation of OFDM and MC-CDMA based cognitive radio system
title_sort	performance evaluation of ofdm and mc-cdma based cognitive radio system
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2012
url	http://eprints.utm.my/id/eprint/32406/1/SalemMohamedMFKE2012.pdf
_version_	1747815994985807872

Performance evaluation of OFDM and MC-CDMA based cognitive radio system

Similar Items