A Sixth-Rate, 3.8 kbps GSM-Like Speech Transceiver

摘要

A 1.9 kbps Zinc-function excited, wave-form interpolated speech codec is proposed and its bit error sensitivity is analysed. This codec is incorporated in a standard GSM-like system, employing either convolutional or turbo coding. Ironically, the higher complexity turbo codec provides only a modest robustness gain over the standard convolutional code due to the short interleaver constraint imposed by the highly bandwidth-efficient speech codec.