| 统一格式数字电路倍增设备 |
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| 引用本文： | 张理云,傅永根. 统一格式数字电路倍增设备[J]. 南京邮电大学学报(自然科学版), 2008, 28(5) |
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| 作者姓名： | 张理云 傅永根 |
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| 作者单位： | 南京邮电大学,通信与信息工程学院,江苏,南京,210003;南京邮电大学,通信与信息工程学院,江苏,南京,210003 |
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| 摘 要： | 根据语音的波形编码与参数编码的特性,提出了一种统一格式的数字电路倍增设备方案(Digit-al Circuit Multiple Equipment,DCME).针对电路和分组传输方式,设计了不同的承载结构,从而可以高效的承栽各种业务,能适用于各种语音压缩编码和传真解调再调制的情况.承载帧长度采用2.5ms,明显提高了系统的承栽快速性能.它可以取代ITU-T G.763、G.767和G.768,并能适应未来的更低比特率或更高质量语音编码.
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| 关 键 词： | 数字电路倍增设备 数字话音插空 可变比特率 承载信道 |
Uniform Format DCME |
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| ZHANG Li-yun,FU Yong-gen. Uniform Format DCME[J]. JJournal of Nanjing University of Posts and Telecommunications, 2008, 28(5) |
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| Authors: | ZHANG Li-yun FU Yong-gen |
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| Affiliation: | ZHANG Li-yun,FU Yong-gen College of Communication , Information Engineering,Nanjing University of Posts , Telecommunications,Nanjing 210003,China |
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| Abstract: | Based on the characteristic of waveform coding and parameter coding for speech,an uniform format digital circuit multiple equipment(DCME) scheme is presented.According to circuit mode and packet mode for transmitting,two different bearer structures are designed,which can be used to transmitte the various services efficiently and in various speech code and fax demodulate/remodulate.Because of selecting a 2.5ms the bearer frame the bearer delay is decreased distinctly.The ITU-T Recommendations of G.763,G.767,... |
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| Keywords: | digital circuit multiple equipment digital speech interpolation variable bit rate bearer channel |
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