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QOFIS
2004
Springer

Evaluating the Utility of Media-Dependent FEC in VoIP Flows

8 years 10 months ago
Evaluating the Utility of Media-Dependent FEC in VoIP Flows
In this paper, we present an analysis of the impact of using media–dependent Forward Error Correction (FEC) in VoIP flows over the Internet. This error correction mechanism consists of piggy-backing a compressed copy of the contents of packet n in packet n + i (i being variable), so as to mitigate the effect of network losses on the quality of the conversation. To evaluate the impact of this technique on the perceived quality, we propose a simple network model, and study different scenarios to see how the increase in load produced by FEC affects the network state. We then use a pseudo–subjective quality evaluation tool that we have recently developed in order to assess the effects of FEC and the affected network conditions on the quality as perceived by the end–user.
Gerardo Rubino, Martín Varela
Added 02 Jul 2010
Updated 02 Jul 2010
Type Conference
Year 2004
Where QOFIS
Authors Gerardo Rubino, Martín Varela
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