Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique

Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for broadband wireless communication system, especially in fourthgeneration (4G) applications. However, a special problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed tha...

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Main Author:	Ibrahim, Nor Adibah
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/53818/1/NorAdibahIbrahimMFKE2015.pdf
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spelling	my-utm-ep.538182020-09-07T01:06:34Z Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique 2015-08 Ibrahim, Nor Adibah TK Electrical engineering. Electronics Nuclear engineering Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for broadband wireless communication system, especially in fourthgeneration (4G) applications. However, a special problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed that results in Inter-Carrier Interference (ICI). ICI causes power leakage among subcarriers, thus degrading overall system performance. ICI is severe and often difficult to remove because the properties of additive noise vary for different carriers. Pulse shaping is among the techniques used to reduce ICI effect. In this thesis, a new pulse shape namely, Scale Alpha for ICI mitigation in OFDM system is proposed. The pulse is modelled and simulated using Matlab software. The pulse performance in reducing ICI is compared to the Franks pulse which is also known as the best pulse among Nyquist pulses. Impulse response, eye diagram, and ICI power reduction performances have also been carried out. The result shows 76.93 dB of ICI reduction compared to the Franks pulse when alpha is equal to 1. This advantage of new Scale Alpha pulse can be applied in the applications of wireless model system especially in 4G applications. 2015-08 Thesis http://eprints.utm.my/id/eprint/53818/ http://eprints.utm.my/id/eprint/53818/1/NorAdibahIbrahimMFKE2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:86227 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 Ibrahim, Nor Adibah Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
description	Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for broadband wireless communication system, especially in fourthgeneration (4G) applications. However, a special problem in OFDM is its vulnerability to frequency offset errors due to which the orthogonality is destroyed that results in Inter-Carrier Interference (ICI). ICI causes power leakage among subcarriers, thus degrading overall system performance. ICI is severe and often difficult to remove because the properties of additive noise vary for different carriers. Pulse shaping is among the techniques used to reduce ICI effect. In this thesis, a new pulse shape namely, Scale Alpha for ICI mitigation in OFDM system is proposed. The pulse is modelled and simulated using Matlab software. The pulse performance in reducing ICI is compared to the Franks pulse which is also known as the best pulse among Nyquist pulses. Impulse response, eye diagram, and ICI power reduction performances have also been carried out. The result shows 76.93 dB of ICI reduction compared to the Franks pulse when alpha is equal to 1. This advantage of new Scale Alpha pulse can be applied in the applications of wireless model system especially in 4G applications.
format	Thesis
qualification_level	Master's degree
author	Ibrahim, Nor Adibah
author_facet	Ibrahim, Nor Adibah
author_sort	Ibrahim, Nor Adibah
title	Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
title_short	Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
title_full	Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
title_fullStr	Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
title_full_unstemmed	Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
title_sort	mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/53818/1/NorAdibahIbrahimMFKE2015.pdf
_version_	1747817634380906496

Mitigating inter-carrier interference in orthogonal frequency division multiplexing system using scaled alpha pulse shaping technique

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