摘要
目的研究Ｘ．２１与Ｇ．７０３转换器的设计及应用。方法通过基带信号的功率谱分析线路编码的原理，并分析Ｇ．７０３和Ｘ．２１协议，结果提出一种实用的编译码实现方案，给出了电路设计原理及其应用，结论该系统工作稳定，能够很好地完成指定功能。
Aim To study the design and application of X.21-G.703 converter Meth- ods principle of the line signal coding was analyzed by means of the power spec- trum of the baseband signal and the G.703,X.21 protocols were analyzed also.ResultsIt suggested a useful implementation of coding and decoding scheme and presented its principle of circuit design and application Conclusion The system works steadily and completes the specified function well.
出处
《北京理工大学学报》
EI
CAS
CSCD
1998年第4期489-493,共5页
Transactions of Beijing Institute of Technology
