Title :
Link adaptive multi-rate coding verification system for CDMA mobile communications
Author :
Tatessh, S. ; Atungsiri, S. ; Kondoz, A.M.
Author_Institution :
Surrey Univ., Guildford, UK
Abstract :
Mobile communications link adaptation maximises the efficient use of radio resources. Multi-rate source and channel coding (MRC) is one of the proposed techniques for link adaptation in future mobile communication systems. A MRC system trades-off the source codec bit rate against channel codec bit rate according to the prevailing channel conditions. This paper presents a CDMA verification environment that allows a comprehensive test of the MRC performance. It shows that by maintaining a satisfactory level of speech quality over a range of channel conditions, MRC results in an increase in the system capacity
Keywords :
adaptive codes; channel coding; code division multiple access; land mobile radio; source coding; CDMA mobile communications; CDMA verification environment; channel codec bit rate; future mobile communication systems; link adaptation; link adaptive multi-rate coding verification system; multi-rate source and channel coding; prevailing channel conditions; radio resources; source codec bit rate; speech quality; system capacity; Bit rate; Channel coding; Codecs; Degradation; Mobile communication; Multiaccess communication; Quality of service; Redundancy; Speech; Vocoders;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.591980
