Title :
Potential physical layer enhancements for AMR speech over EDGE
Author :
Nefedov, Nikolai
Author_Institution :
Nokia Res. Center, Finland
Abstract :
Currently one of EDGE Phase II activities is a concept development for providing real time services including voice with 8-PSK modulated signals in the EDGE environment. The introduction of speech services in EDGE allows one to allocate more speech users and also would pave a way for high quality speech codecs. We outline a potential physical layer enhancement for EDGE including a multiplexing of two users with possibly different data rates within one TDMA slot. As a practical example the transmission of voice with adaptive multirate (AMR) speech codecs in GSM/EDGE environments is considered. The presented method of user multiplexing allows one to increase the interleaving depth and improve the radio-link budget
Keywords :
adaptive systems; cellular radio; multiuser channels; phase shift keying; speech codecs; telecommunication traffic; time division multiple access; time division multiplexing; voice communication; 8-PSK signals; AMR speech; EDGE Phase II activities; GSM/EDGE environments; TDMA slot; adaptive multirate speech codecs; data only standard; data rates; interleaving depth; multiplexing; physical layer enhancements; radio-link budget; real time services; speech services; traffic channels; traffic models; voice services; voice transmission; Bit rate; Channel coding; GSM; Phase modulation; Physical layer; Speech codecs; Speech enhancement; Telecommunication traffic; Time division multiple access; Wideband;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886799
