Robust transmission of adaptive multi-rate speech transcoding
Tan Wang · Journal of China Institute of Communications · 2004
Adaptive multi-rate speech (AMR) transcoding has been selected as speech compression solution of the 3G mobile communications. This paper describes a particular approach to joint source-channel coding to the compressed speech transmitted over noisy channels. The focus of the paper is on the channel decoders that exploit the residual redundancy inherent in the compressed speech bit stream. Some simulation and analysis prove that substantial coding gain can be achieved when the residual redundancy is exploit by the tuned channel decoders. Channel coding schemes used in the paper is convolutional code.