基于FPGA下GDF格式的HDB3编码电路  

From GDF Format TO HD3 Format Encode Circuit By Using FPGA

作　　者：鲁继超[1] 胡建萍[1] 陈显萼[1] 

机构地区：[1]杭州电子工业学院电子信息分院,浙江杭州310037

出　　处：《杭州电子工业学院学报》2003年第3期38-41,共4页Journal of Hangzhou Institute of Electronic Engineering

摘　　要：阐述了脉冲编码调制(PCM)基带常用码型及其特点。在此基础上,详细描述了单极性归零码(NRZ)和高密度三阶码(HDB3)的相互转换的基础原理,讨论了采用现场可编程逻辑(FPGA)实现其转换方案,并给出了转换的电路原理图和仿真波形。结果表明用FPGA实现NRZ到HDB3的转换比采用专用集成电路具有结构简单,体积更小,灵活性高,调试方便等优点。This paper tells the property of general PCM encode, on the base , this paper also tells the theory of from NRZ to HDB3 in detail and discuss to how to Implement convert method by FPGA is also presented,In the paper ,there are about the circuit graph and simulation about the method. The results show,this method have more advantageous than ASIC in structure and volume ,it is more convenient in debug .

关 键 词：FPGA GDF格式 HDB3 脉冲编码调制 高密度三阶码 现场可编程逻辑 单极性归零码 

分 类 号：TN911.1[电子电信—通信与信息系统] TN791[电子电信—信息与通信工程]