A Methodology for Deriving VoIP Equipment Impairment Factors for a Mixed NB/WB Context

Created by W.Langdon from gp-bibliography.bib Revision:1.4192

  author =       "A. Raja and R. M. A. Azad and C. Flanagan and 
                 C. Ryan",
  title =        "A Methodology for Deriving VoIP Equipment Impairment
                 Factors for a Mixed NB/WB Context",
  journal =      "IEEE Transactions on Multimedia",
  year =         "2008",
  volume =       "10",
  number =       "6",
  pages =        "1046--1058",
  month =        oct,
  keywords =     "genetic algorithms, genetic programming, PESQ-WB",
  ISSN =         "1520-9210",
  DOI =          "doi:10.1109/TMM.2008.2001359",
  abstract =     "This paper proposes a novel approach to quantifying
                 the quality degradation of Voice over IP (VoIP)
                 telephony in the presence of codec and network-related
                 impairments. This approach differs from the basic ITU-T
                 E-Model for VoIP quality estimation in that it
                 addresses mixed narrowband/wideband scenarios. It makes
                 novel use of instrumental models and symbolic
                 regression via Genetic Programming (GP) to enable the
                 evolution of degradation models from a modest set of
                 initial parameters. Here, a two-step approach has been
                 used. First, values of impairment factors are derived
                 using WB-PESQ as a reference model. Secondly, a GP
                 based symbolic regression approach has been used to
                 automatically evolve the functional form of equipment
                 impairment factors from a set of variables. Very few a
                 priori assumptions are made about the model structure.
                 The effectiveness of the approach is demonstrated by a
                 number of generated models which compare favorably with
                 WB-PESQ and outperform the traditional E-Model in terms
                 of prediction accuracy when compared using WB-PESQ. A
                 significant advantage of the approach is that new
                 models are easily generated to account for continuing
                 evolution of the VoIP standards.",
  notes =        "Also known as \cite{4637891}",

Genetic Programming entries for Adil Raja R Muhammad Atif Azad Colin Flanagan Conor Ryan