Title :
Radio link parameter based speech quality index-SQI
Author :
Karlsson, A. ; Heikkilä, G. ; Minde, T.B. ; Nordlund, M. ; Timus, B. ; Wirén, N.
Author_Institution :
Voice Process. & Radio Network Res., Ericsson Erisoft AB, Lulea, Sweden
Abstract :
Measurement of cellular speech quality has applications from equipment installation to daily network maintenance and benchmarking. The area is under development, driven by cost and lead-time of subjective listening tests. Lately, field tests has shown usability for objective speech quality methods. The new SQI-measure, based on radio link parameters is one of these methods. It is independent of transmitted signal and can provide better performance than PSQM. Additional information available at: www.ericsson.se/wireless/products/tems/. In this paper, the SQI measure is described, speech quality measurement methods are categorized to highlight differences between measures, performance evaluation figures are presented, and finally a motivation why speech quality is possible to measure given the radio link status
Keywords :
cellular radio; performance evaluation; radio links; speech processing; PSQM; SQI-measure; benchmarking; cellular speech quality; cost; field tests; lead-time; network maintenance; objective speech quality methods; performance evaluation; radio link parameters; speech quality index; subjective listening tests; Benchmark testing; Costs; Decoding; Distortion measurement; Nonlinear distortion; Radio link; Redundancy; Speech analysis; Speech codecs; Speech processing;
Conference_Titel :
Electronics, Circuits and Systems, 1999. Proceedings of ICECS '99. The 6th IEEE International Conference on
Conference_Location :
Pafos
Print_ISBN :
0-7803-5682-9
DOI :
10.1109/ICECS.1999.814471
