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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
https://ir.uitm.edu.my/id/eprint/64657/
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spelling my.uitm.ir.646572023-04-19T01:19:24Z https://ir.uitm.edu.my/id/eprint/64657/ Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin 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 NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/64657/1/64657.pdf Performance analysis on the effect of G.729, Speex and GSM speech codec on 802.11g wireless local area network / Imran Edzereiq Kamarudin. (2008) Masters thesis, thesis, Universiti Teknologi MARA (UiTM).
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
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
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
publishDate 2008
url https://ir.uitm.edu.my/id/eprint/64657/1/64657.pdf
https://ir.uitm.edu.my/id/eprint/64657/
_version_ 1765300319257886720
score 13.211869

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