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  • Research Article
  • Open Access

Fast and Accurate Video PQoS Estimation over Wireless Networks

EURASIP Journal on Advances in Signal Processing20082008:548741

  • Received: 29 September 2007
  • Accepted: 9 April 2008
  • Published:


This paper proposes a curve fitting technique for fast and accurate estimation of the perceived quality of streaming media contents, delivered within a wireless network. The model accounts for the effects of various network parameters such as congestion, radio link power, and video transmission bit rate. The evaluation of the perceived quality of service (PQoS) is based on the well-known VQM objective metric, a powerful technique which is highly correlated to the more expensive and time consuming subjective metrics. Currently, PQoS is used only for offline analysis after delivery of the entire video content. Thanks to the proposed simple model, we can estimate in real time the video PQoS and we can rapidly adapt the content transmission through scalable video coding and bit rates in order to offer the best perceived quality to the end users. The designed model has been validated through many different measurements in realistic wireless environments using an ad hoc WiFi test bed.


  • Wireless Network
  • Video Code
  • Radio Link
  • Video Content
  • Scalable Video Code

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Authors’ Affiliations

Department of DEIS, University of Calabria, 87036 Rende, Italy


© P. Pace and E. Viterbo. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.