On In-service Perceptual Speech Quality Monitoring in Cellular Radio Systems

Document type: Conference Papers
Peer reviewed: Yes
Author(s): Behrooz Rohani, Bijan Rohani, Manora Caldera, Hans-Jürgen Zepernick
Title: On In-service Perceptual Speech Quality Monitoring in Cellular Radio Systems
Conference name: IEEE Wireless Telecommunications Symposium
Year: 2009
Pagination: 1 - 9
ISBN: 978-1-4244-2588-4
Publisher: IEEE
City: Prague, Czech Republic
URI/DOI: 10.1109/WTS.2009.5068971
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Signal Processing (Sektionen för teknik – avd. för signalbehandling)
School of Engineering S- 372 25 Ronneby
+46 455 38 50 00
Authors e-mail: hans-jurgen.zepernick@bth.se
Language: English
Abstract: A method for in-service monitoring of the end-user perceptual speech quality in cellular radio systems is proposed. This method incorporates the perceptual evaluation of speech quality (PESQ) algorithm to monitor the quality experienced by the end-user. Here, the monitoring is carried out at the transmitting side. In this case, the speech signal received by the end-user is estimated at the transmitter in accordance with a feedback signal. The performance of the proposed scheme has been investigated through extensive simulations for the Universal Mobile Telecommunication System (UMTS) using different speech coding rates and channel conditions. The results indicate that the proposed scheme can predict end-user quality with a root-mean-squared error (RMSE) of at most 0.15 using the mean opinion score (MOS) rating scheme. Such accuracy can be beneficial in applications such as radio resource management for satisfying the desired level of quality of service.
Subject: Telecommunications\General
Keywords: PESQ, Quality Monitoring, Cellular Radio Systems