Adaptive VoIP smoothing of pareto traffic based on optimal E-model quality

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Perceived voice quality is a key metric for VolP applications. It is mainly affected by IP network impairments such as delay, jitter and packet loss. Adaptive smoothing algorithms are capable of adjusting dynamically the smoothing size by introducing a variable delay based on the network delay and loss parameters to archive the best voice quality. This work formulates an online loss model which incorporates buffer sizes and introduces an efficient and feasible perceived quality method for buffer optimization. Distinct from the other optimal smoothers, the proposed optimal smoother suitable for most of codecs carries the lowest complexity. Since the adaptive smoothing scheme introduces variable playback delays, the buffer re-synchronization between the capture and the playback becomes essential. This work also presents a buffer resynchronization algorithm to prevent unacceptable increase in the buffer overflow. Simulation experiments validate that the proposed adaptive smoother archives significant improvement in the voice quality.

Original languageEnglish
Title of host publicationAdvances in Mulitmedia Information Processing - PCM 2005 - 6th Pacific Rim Conference on Multimedia, Proceedings
Pages747-758
Number of pages12
DOIs
StatePublished - 2005
Event6th Pacific Rim Conference on Multimedia - Advances in Mulitmedia Information Processing - PCM 2005 - Jeju Island, Korea, Republic of
Duration: 13 Nov 200516 Nov 2005

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3768 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Conference

Conference6th Pacific Rim Conference on Multimedia - Advances in Mulitmedia Information Processing - PCM 2005
Country/TerritoryKorea, Republic of
CityJeju Island
Period13/11/0516/11/05

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