2019/05/22 by Elena Cipressi, Cipressi, Elena, Maria Luisa Merani +1
Computer Science · Engineering · #Advanced MIMO Systems Optimization #Advanced Wireless Network Optimization #Codec #Computer network #Computer science #Electronic engineering #FOS: Computer and information sciences #Jitter #Multimedia (cs.MM) #Narrowband #Network packet #Networking and Internet Architecture (cs.NI) #Packet loss #Quality (philosophy) #Speech coding #Speech recognition #Telecommunications #The Internet #Voice over IP #Wideband #Wideband audio #Wireless Communication Networks Research #cs.MM #cs.NI
paper · pdf · doi:10.48550/arxiv.1906.00750
published in arXiv (Cornell University) (Cornell University) · Paper accepted at CoNEXT 2018 Student Workshop
arxiv created 2019/05/22 · openalex publication_date 2019/05/22 · arxiv updated 2019/06/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This work performs a preliminary, 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 WideBand (AMR-WB). To assess call quality, VQmon, an enhanced version of the standardized E-Model, is utilized. The study reveals to what extent AMR-WB 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 when the AMR codec is used, whereas it is nearly linear for the AMR-WB codec.