Impact of Statistical Multiplexing on Voice Quality in Cellular Networks |
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| Authors: | Thomas Enderes Swee Chern Khoo Clare A. Somerville Kostas Samaras |
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| Affiliation: | (1) Global Wireless Systems Research, Bell Labs, Lucent Technologies, Optimus, Swindon, SN5 6PP, UK;(2) Division of Engineering, King's College London, Strand, London, WC2R 2LS, UK;(3) Raycap Corporation, Telou & Petroutsou 14, Maroussi, Athens, 15124, Greece |
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| Abstract: | This paper examines the quality of transmission of voice over cellular, packet-switched networks. The medium access mechanism in the uplink is simulated under various 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. Results from the MOS tests are reported, and an analysis of the obtained speech samples is presented. Finally, the results are summarized and potential further directions for the simulation tool and the speech models are discussed. |
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| Keywords: | voice quality cellular networks statistical multiplexing speech pattern |
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