数字通信四次群信号发生器研制  

A QUARTIC GROUP SIGNAL GENERATOR FOR DIGITAL COMMUNICATION

作　　者：丁俊民[1] 包志华[1] 景为平[1] 

机构地区：[1]南通工学院,南通226007

出　　处：《苏州大学学报（自然科学版）》1999年第3期68-72,共5页Journal of Soochow University(Natural Science Edition)

摘　　要：介绍的数字通信四次群信号发生器是以 ＩＴＵ－Ｔ　 Ｇ．７５５建议为标准研制的．信号发生器可输出两种码型的数据流，一路是ＣＭＩ码流，另一路是普通二进制码流，数据速率为１３９．２６４Ｍｂ／ｓ．信号发生器还输出１３９．２６４ＭＨｚ的同步脉冲．设计中采用了高速ＥＣＬ器件，ＥＰＬＤ和８９５１单片机。信号发生器可产生可编程设定符合Ｇ．７５５建议的多套码型．The quartic group signal generator in this paper is based on ITU-T recommendation. G.755. It can output two types s of data cedes, CMI code and BIN code. The data rate reaches 139. 264 Mb/s. A synchro pulse of 139. 264 MHz is also produced. High-speed ECL, EPLD and 8951 are employed in the design. The signal generates several sets of codes, which are programmable and conform with the recommendation G. 755.

关 键 词：数字通信 四次群 信号发生器 EPLD 

分 类 号：TN919[电子电信—通信与信息系统]