Multi-stream voice over IP using packet path diversity

Yi J. Liang, Eckehard G. Steinbach, Bernd Girod

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

31 Scopus citations

Abstract

We propose multi-stream transmission of real-time voice over best-effort packet networks such as today's Internet, where multiple redundant descriptions of the voice stream are sent over independent network paths. At the receiver, multi-stream adaptive playout scheduling is employed to improve the tradeoff among delay, late loss rate, and speech quality. Experiments over the Internet suggest largely uncorrelated statistical characteristics, such as erasure probability and delay jitter, for different network paths, which leads to a noticeable path diversity gain. We have obtained significant reductions in mean end-to-end latency and loss rates compared to FEC protected single-path transmission at the same data rate. The speech quality perceived by the receiver is evaluated using the recently standardized objective quality measure PESQ. In our experiments, we observe gains of more than 0.4 PESQ score for voice transmission with packet path diversity.

Original languageEnglish
Title of host publication2001 IEEE Fourth Workshop on Multimedia Signal Processing
EditorsJ.-L. Dugelay, K. Rose, J.-L. Dugelay, K. Rose
Pages555-560
Number of pages6
StatePublished - 2001
Externally publishedYes
Event2001 IEEE fourth Workshop on Multimedia Signal Processing - Cannes, France
Duration: 3 Oct 20015 Oct 2001

Publication series

Name2001 IEEE Fourth Workshop on Multimedia Signal Processing

Conference

Conference2001 IEEE fourth Workshop on Multimedia Signal Processing
Country/TerritoryFrance
CityCannes
Period3/10/015/10/01

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