基于CPLD的CMI编解码电路的设计与实现  

Circuit Design and Realization of CMI Encoder and Decoder Based on CPLD

作　　者：陈适[1] 綦晓华[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2010年第1期8-11,共4页Journal of Wuhan University of Technology：Information & Management Engineering

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.

关 键 词：CMI码 CPLD 光纤传输 VHDL 同步时钟提取 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TU855[自动化与计算机技术—控制科学与工程]