Title :
Selective error protection of ITU-T G.729 codec for digital cellular channels
Author :
Swaminathan, Kumar ; Hammons, A. Roger, Jr. ; Austin, Mark
Author_Institution :
Hughes Network Syst. Inc., Germantown, MD, USA
Abstract :
The recently adopted ITU-T G.729 8 kbps codec standard´s performance is evaluated for digital cellular channels that are characterized by Rayleigh fading. Two forward error correction schemes (FEC) are studied. They are the convolutional code based FEC and the Nordstrom Robinson based FEC. The effects of interleaving depth are investigated for both FEC schemes. Both flat fading as well as co-channel interference limited models are used in our study
Keywords :
Rayleigh channels; cellular radio; channel coding; cochannel interference; convolutional codes; digital radio; error correction codes; fading; forward error correction; interleaved codes; linear predictive coding; speech codecs; speech coding; telecommunication standards; 8 kbit/s; CELP; ITU-T G.729 standard codec; Nordstrom Robinson based FEC; Rayleigh fading; co-channel interference; convolutional code based FEC; digital cellular channels; flat fading; forward error correction; interleaving depth effects; performance evaluation; selective error protection; Cellular networks; Codecs; Convolutional codes; Distortion measurement; Forward error correction; Interleaved codes; Linear predictive coding; Protection; Rayleigh channels; Speech;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3192-3
DOI :
10.1109/ICASSP.1996.541162
