摘要
数字通信过程中,基带信道对传输信号的码型有严格的限制。针对数字光纤通信传输信号码型的要求,介绍了CMI码的编解码原理,提出了一种基于可编程逻辑器件EPM240T100C5实现CMI编解码的方法,给出了基于Quartus Ⅱ软件仿真平台的设计与仿真实现,对于光纤信号传输的线路码型及设计数字光端机具有一定的参考作用。
In digital communication, the transmission signal code stringent is strictly limited by baseband channel. Aiming at the demands of optic - fiber transmission code, the encoding/decoding principle and application of CMI code was introduced and a no- vel CMI encoding/decoding method based on EPM240T100C5 was proposed. The emulation software platform based on Quartus Ⅱ was established and realized by the designed circuits. It was valuable to optic fiber transmission and PCM design.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2010年第1期8-11,共4页
Journal of Wuhan University of Technology：Information & Management Engineering
关键词
CMI码
CPLD
光纤传输
VHDL
同步时钟提取
CMI code
CPLD
optic - fiber transmission
VHDL
extraction of clock synchronization
