Title :
AMR Call Quality Measurement Based on ITU-T P.862.1 PESQ-LQO
Author :
Ho, Ming-Ju ; Mostafa, Ayman
Author_Institution :
Cingular Wireless, Atlanta, GA
Abstract :
Adaptive multi-rate (AMR) codecs are used popularly in most GSM and W-CDMA networks. This document describes the AMR call quality measurement results of PESQ-LQO (ITU-T P.862-1) based mean opinion score (MOS) vs. several key RF parameters under a controlled lab test environment. Frequency hopping and Rayleigh fading were included. The codecs that were evaluated include full rate 12.2, 7.4, 5.9, 4.75 and half rate 7.4, 5.9, 4.75. The RF parameters studied here were C/I, RXQUAL and FER MOS scores were collected via the tool based on the ITU P.862.1 PESQ-LQO algorithm. The radio link timer (RLT) was set 64 and the transmit power control (TPC) and discontinuous transmission (DTX) mechanisms were turned off for all fixed codec cases.
Keywords :
Rayleigh channels; adaptive codes; cellular radio; code division multiple access; AMR call quality measurement; FER MOS; GSM; ITU-T P.862.1 PESQ-LQO; RXQUAL; Rayleigh fading; W-CDMA; adaptive multi-rate codecs; discontinuous transmission; frequency hopping; mean opinion score; radio link timer; transmit power control; Base stations; Circuits; Connectors; Delay effects; GSM; Power control; Radio frequency; Speech codecs; Speech enhancement; Testing;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0062-7
Electronic_ISBN :
1-4244-0063-5
DOI :
10.1109/VTCF.2006.430
