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Performance evaluation of VoIP over WLAN networks using Weibull distribution for canal emulation

Published: 14 May 2007 Publication History

Abstract

This article investigates VoIP performance over WLAN (WVoIP) through qualitative and quantitative point of view, considering degradation with the mobility. The results was obtained through a channel emulator to produce the Weibull distribution. Measurements results with a robot showed that this distribution is adequate to represent WLAN environment instability. The test utilized the CODECs G711 and GSM. The article presents preliminary results that indicate the effect of the instability of wireless environment in the VoIP performance. The results indicate a significant variation of voice quality, considering the severity of the phenomena emulated. The behaviors of the CODECs are evaluated considering the different characteristics of bandwidth and robustness.

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GARG, S.; KAPPES M. An experimental study of troughput for UDP and VoIP traffic in IEEE 802.11b networks. IEEE Wireless Communications and Network Conference (WCNC), pages 1748--1753, março 2003.
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    cover image ACM Conferences
    EATIS '07: Proceedings of the 2007 Euro American conference on Telematics and information systems
    May 2007
    498 pages
    ISBN:9781595935984
    DOI:10.1145/1352694
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Published: 14 May 2007

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