Study and Implement of Two Methods for Improving Speech QoS in UMTS System
Huang Ben-xiong · Modern Electronic Technique · 2004
The present article describes two methods of improving speech quality for mobilemobile calls in UMTS system, i.e. TFO(tandem free operation) and TrFO(transcoder free operation). Then analyses their principles of operation and summarizes each performance and virtues or shortcomings after comparing TFO and TrFO.At last some possible solutions are given for implementing.