This work performs a comparative analysis of the end-to-end quality guaranteed by Voice over LTE (VoLTE), examining several millions of VoLTE calls that employ two popular speech audio codecs, namely, Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wide Band (AMR-WB). To assess call quality, VQmon, an enhanced version of the standardized E-Model, is utilized. The study reveals to what extent AMRWB based calls are more robust against network impairments than their narrowband counterparts; it further shows that the dependence of call quality on the packet loss rate is approximately exponential for both types of codec.
A Comparative Study on the Quality of Narrow-Band and Wide-Band AMR VoLTE Calls / Merani, Maria Luisa; Cipressi, Elena. - (2019), pp. 1273-1278. (Intervento presentato al convegno IEEE IWCMC (International Wireless Communications & Mobile Computing Conference) tenutosi a Tangeri nel 24-28 giugno 2019).
A Comparative Study on the Quality of Narrow-Band and Wide-Band AMR VoLTE Calls
Maria Luisa Merani;CIPRESSI, ELENA
2019
Abstract
This work performs a comparative analysis of the end-to-end quality guaranteed by Voice over LTE (VoLTE), examining several millions of VoLTE calls that employ two popular speech audio codecs, namely, Adaptive Multi-Rate (AMR) and Adaptive Multi-Rate Wide Band (AMR-WB). To assess call quality, VQmon, an enhanced version of the standardized E-Model, is utilized. The study reveals to what extent AMRWB based calls are more robust against network impairments than their narrowband counterparts; it further shows that the dependence of call quality on the packet loss rate is approximately exponential for both types of codec.File | Dimensione | Formato | |
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