Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin

The widespread use of wireless local area network together with the emerging of VoIP has lead to an increased interest in the study of voice over wireless LANs. Users clearly defined the most decisive factor in selecting VoIP applications will be a voice quality. Voice quality is the perceived quali...

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Main Author:	Kamarudin, Imran Edzereiq
Format:	Thesis
Language:	English
Published:	2008
Subjects:	Computer networks General works Traffic monitoring Wireless LANs
Online Access:	https://ir.uitm.edu.my/id/eprint/64657/1/64657.pdf
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id	my-uitm-ir.64657
record_format	uketd_dc
spelling	my-uitm-ir.646572023-04-19T01:19:24Z Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin 2008 Kamarudin, Imran Edzereiq Computer networks. General works. Traffic monitoring Wireless LANs The widespread use of wireless local area network together with the emerging of VoIP has lead to an increased interest in the study of voice over wireless LANs. Users clearly defined the most decisive factor in selecting VoIP applications will be a voice quality. Voice quality is the perceived quality that can be heard during a conversation. Considering WLAN signal strength by referring to SNR value, the choice of the right speech codec is essential to determine high quality of VoWLAN call. Theoretically, the higher the bit rate of a speech codec, the better the speech quality but requires high network resources. In this dissertation, three speech codecs; G.729 (8 kbps), Speex (8kbps) and GSM (13kbps) were tested together with several predetermined SNR value ranging from lOdB to 45dB with a sample of 8 second speech. VoIP QoS such as packet jitter, packet loss, MOS Score and R-factor were analyzed in order to make a comparison of speech quality of two speech codec in wireless LAN 802.1 lg environment. Result shows that at lower SNR, GSM outperform G.729 and Speex in terms of higher R-Factor and MOS Score but substantial to higher packet jitter and loss. At higher SNR, G.729 and Speex outperform GSM in terms of higher R-factor and MOS score but lower packet jitter and loss. Results also shows that lower bit rate codec such as G.729 and Speex at 8 kbps perform better than higher bit rate codec such as GSM at 13 kbps a higher SNR. 2008 Thesis https://ir.uitm.edu.my/id/eprint/64657/ https://ir.uitm.edu.my/id/eprint/64657/1/64657.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Computer and Mathematical Sciences Azmat, Farok
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Azmat, Farok
topic	Computer networks General works Traffic monitoring Wireless LANs
spellingShingle	Computer networks General works Traffic monitoring Wireless LANs Kamarudin, Imran Edzereiq Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin
description	The widespread use of wireless local area network together with the emerging of VoIP has lead to an increased interest in the study of voice over wireless LANs. Users clearly defined the most decisive factor in selecting VoIP applications will be a voice quality. Voice quality is the perceived quality that can be heard during a conversation. Considering WLAN signal strength by referring to SNR value, the choice of the right speech codec is essential to determine high quality of VoWLAN call. Theoretically, the higher the bit rate of a speech codec, the better the speech quality but requires high network resources. In this dissertation, three speech codecs; G.729 (8 kbps), Speex (8kbps) and GSM (13kbps) were tested together with several predetermined SNR value ranging from lOdB to 45dB with a sample of 8 second speech. VoIP QoS such as packet jitter, packet loss, MOS Score and R-factor were analyzed in order to make a comparison of speech quality of two speech codec in wireless LAN 802.1 lg environment. Result shows that at lower SNR, GSM outperform G.729 and Speex in terms of higher R-Factor and MOS Score but substantial to higher packet jitter and loss. At higher SNR, G.729 and Speex outperform GSM in terms of higher R-factor and MOS score but lower packet jitter and loss. Results also shows that lower bit rate codec such as G.729 and Speex at 8 kbps perform better than higher bit rate codec such as GSM at 13 kbps a higher SNR.
format	Thesis
qualification_level	Master's degree
author	Kamarudin, Imran Edzereiq
author_facet	Kamarudin, Imran Edzereiq
author_sort	Kamarudin, Imran Edzereiq
title	Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin
title_short	Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin
title_full	Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin
title_fullStr	Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin
title_full_unstemmed	Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin
title_sort	performance analysis on the effect of g.729, speex and gsm speech codec on 802.11g wireless local area network / imran edzereiq kamarudin
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Computer and Mathematical Sciences
publishDate	2008
url	https://ir.uitm.edu.my/id/eprint/64657/1/64657.pdf
_version_	1783735506711871488

Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin

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