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Estimation of Quality of Experience in 3G Networks with the Mahalanobis Distance

Authors:
Karel De Vogeleer
Selim Ickin
Markus Fiedler
David Erman
Adrian Popescu

Keywords: Mahalanobis Distance; Quality of Experience; video streaming; robust statistics; 3G network measurements;

Abstract:
Quality of Experience is a parameter used to express the relationship between Quality of Service and the satisfaction of network service subscribers. The modeling of Quality of Experience demands for solving a multidimensional problem. In this paper, we present a Quality of Experience analysis of streaming videos. Related to this, we show that we can reduce the dimensions of the Quality of Experience modeling with the help of Principle Component Analysis techniques. We demonstrate that for our data set the Zero Throughput Time and the Packet Delay Variation are enough to get a picture of the state of the network. We further calculate the Mahalanobis distance to analyze the outliers in the data set. We illustrate that for our data set the 97.5 % quantile for the Mahalanobis distance is a good threshold that indicates low user perception. We also advocate the use of robust statistics in the analysis of Quality of Experience as we are dealing with contaminated data sets.

Pages: 72 to 77

Copyright: Copyright (c) IARIA, 2011

Publication date: April 17, 2011

Published in: conference

ISSN: 2308-4022

ISBN: 978-1-61208-126-7

Location: Budapest, Hungary

Dates: from April 17, 2011 to April 22, 2011