Impact of statistical multiplexing on voice quality in cellular networks

  • Authors:
  • T. Enderes;S. C. Khoo;C. A. Somerville;K. Samaras

  • Affiliations:
  • Department of Microwaves and Electronic Engineering, University of Karlsruhe, Kaiser. 12, 76128 Karlsruhe, Germany;Division of Engineering, King's College London, Strand, London WC2R 2LS, UK;Global Wireless Systems Research, Bell Labs, Lucent Technologies, Unit 1, Pagoda Park, Westmead Drive, Swindon, SN5 7YT, UK;Global Wireless Systems Research, Bell Labs, Lucent Technologies, Unit 1, Pagoda Park, Westmead Drive, Swindon, SN5 7YT, UK

  • Venue:
  • Proceedings of the 3rd ACM international workshop on Modeling, analysis and simulation of wireless and mobile systems
  • Year:
  • 2000

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Abstract

This paper examines the quality of transmission of voice over cellular, packet-switched TDMA networks. The medium access mechanism in the uplink is simulated for different statistical multiplexing scenarios in order to assess the effect of front-end clipping on voice quality. Moreover, the simulation is implemented in a real-time demonstration platform utilized to acquire subjective indicators of voice quality by performing Mean Opinion Score (MOS) tests. The results from the MOS tests are reported. Furthermore, an analysis of the obtained speech samples is presented.