Simulation and modeling of packet loss on α-stable VoIP traffic

  • Authors:

  • Homero Toral;Deni Torres;Leopoldo Estrada

  • Affiliations:

  • Department of Electrical Engineering, Centro de Investigación y Estudios Avanzados del I.P.N, Guadalajara, Jalisco, México and Department of Postgraduate, Instituto Tecnológico Supe ...;Department of Electrical Engineering, Centro de Investigación y Estudios Avanzados del I.P.N, Guadalajara, Jalisco, México;Department of Electrical Engineering, Centro de Investigación y Estudios Avanzados del I.P.N, Guadalajara, Jalisco, México

  • Venue:
  • SSIP '09/MIV'09 Proceedings of the 9th WSEAS international conference on signal, speech and image processing, and 9th WSEAS international conference on Multimedia, internet & video technologies
  • Year:
  • 2009

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Abstract

In this paper, through an extensive analysis it is shown that VoIP traffic jitter exhibits heavy-tail characteristics, where α-stable distribution particularly gives the best goodness of fit; this fact has serious implications on the design of de-jitter buffer size. On the other hand, we investigate the packet loss effects on the VoIP jitter, and present a methodology for simulating packet loss on VoIP jitter traces with α-stable characteristics. In order to represent the packet loss process, the two state Markov model or Gilbert model is used. We proposed a new model for α-stable VoIP traffic, this model are based on voice traffic measurements, and allows to relate the α parameter and packet loss rate. We find that the relationship between α parameter and packet loss rate obeys a power-law function with three fitted parameters.