E-model MOS Estimate Improvement through Jitter Buffer Packet Loss Modelling
Clicks: 164
ID: 77173
2011
Proposed article analyses dependence of MOS as a voice call quality (QoS) measure estimated through ITU-T E-model under real network conditions with jitter. In this paper, a method of jitter effect is proposed. Jitter as voice packet time uncertainty appears as increased packet loss caused by jitter memory buffer under- or overflow. Jitter buffer behaviour at receiver’s side is modelled as Pareto/D/1/K system with Pareto-distributed packet interarrival times and its performance is experimentally evaluated by using statistic tools. Jitter buffer stochastic model is then incorporated into E-model in an additive manner accounting for network jitter effects via excess packet loss complementing measured network packet loss. Proposed modification of E-model input parameter adds two degrees of freedom in modelling: network jitter and jitter buffer size.
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kovac2011emodeladvances
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| Authors | Kovac, Adrian;Halas, Michal;Orgon, Milos;Voznak, Miroslav; |
| Journal | advances in electrical and electronic engineering |
| Year | 2011 |
| DOI | DOI not found |
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