A High-Performance Codec Suitable for the GSM Half-Rate Coding System  

作　　者：ZHOU Yue-chen FENG Yu-wen(Department of Communication Engineering, Naming University of Posts and Telecommunications, Naming, 210003, P.R. China) 

出　　处：《The Journal of China Universities of Posts and Telecommunications》1999年第2期67-71,共5页中国邮电高校学报（英文版）

摘　　要：In this paper we describe our research work in GSM half-rate coding system for the pan-Europeandigital mobile cellular radio system. The system consists of a speech coder and a channel coder. An overview of thespeech coding algorithm is given. The channel coder uses CRC check and a convolutional code. Interleaving is usedto randomize the channel bursts. The proposed half-rate codec is implemented with a single TMS320C30. Theinformal tests (based on MOS score) prove that our speech coder is of higher quality.In this paper we describe our research work in GSM half-rate coding system for the pan-Europeandigital mobile cellular radio system. The system consists of a speech coder and a channel coder. An overview of thespeech coding algorithm is given. The channel coder uses CRC check and a convolutional code. Interleaving is usedto randomize the channel bursts. The proposed half-rate codec is implemented with a single TMS320C30. Theinformal tests (based on MOS score) prove that our speech coder is of higher quality.

关 键 词：CELP(code-excited linear predication) LSP parameters: channel coding 

分 类 号：TN929.532[电子电信—通信与信息系统]