基于FPGA的CMI编解码设计

Design of CMI CODEC Based on FPGA

在基于FPGA的基带传输系统研究中,对基带传输信号的码型有严格的要求。通过对CMI码型的研究,提出了一种通过Altera公司CycloneⅡ系列EP2C35F672C6芯片实现CMI编解码功能的方法,并给出了QuartusⅡ仿真平台实现CMI编解码的设计方案。通过这种方法得出的CMI编解码码型符合编解码原理,解码输出与基带信号一致,最终结果符合预期。能够适应多种集成电子电路设计场合,通过仿真帮助达到预期效果。

In the research of baseband transmission system based on FPGA,there are strict requirements for the code type of baseband transmission signal.Through the research of CMI code type,a method to realize CMI coding and decoding function through Altera’s CycloneⅡseries EP2C35F672C6 chip is proposed,and the design scheme of QuartusⅡsimulation platform to realize CMI coding and decoding is given.The CMI codec pattern obtained by this method accords with the principle of CODEC,the decoding output is consistent with the baseband signal and the final result meets the expectations.It can adapt to a variety of integrated electronic circuit design occasions,and help achieve the desired effect through simulation.