60路ADPCM编码转换设备总体设计  

Overall Design of the 60-Channel ADPCM Transcoder Equipment

作　　者：蔡国齐[1] 齐立心[1] 陈常嘉[1] 冯玉珉[1] 

机构地区：[1]北方交通大学通信与控制工程系

出　　处：《北京交通大学学报》1992年第S1期105-112,共8页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

摘　　要：文章介绍了60路 ADPCM 编码转换设备总体设计中重点考虑的问题,首先说明了选用320C10DSP 芯片的依据及对外围硬件电路设置的要求以满足 CCITT G.721编解码算法.并提出设备的方框图及各部件功能以满足 CCITT G.761建议.最后论述了总体设计对系统性能的保证.The overall design of the 60-channel ADPCM Transcoder Equipment is introduced concisely in this paper.Enconomic/performance analysis is conducted in the first stage of the overall design.It explains why the chip TMS320C10 has been chosen as the DSP for ADPCM coder.In the next stage,the function decomposition is processed.The system block diagram and the descriptions for every function blocks are set out.In the final stage,the descriptions for each function block are verified to ensurethe system performance which conforms the specifications in CCITT Recommendation G.761.

关 键 词：自适应控制 差分脉码调制 抖功 误码率 

分 类 号：TN914.3[电子电信—通信与信息系统]