基于STM320C54x系列芯片的HDB3解码研究  

作　　者：刘剑丽 曹勇[1] 程奋元 李宁川 

机构地区：[1]成都工业职业技术学院,四川成都610213 [2]成都理工大学,四川成都610059

出　　处：《现代传输》2024年第6期63-66,共4页Modern Transmission

摘　　要：数字基带传输系统中,HDB3码保持AMI码极性反转的特点,减少了连“0”的长度,便于提取传输波形的定时信息和检错。DSP芯片具有高性能处理能力,通过软件编程实现特定的解码算法,可适应不同的通信标准和协议。通过分析HDB3的编码规则,本文提出利用TM320C54x系列DSP芯片通过软件编程实现HDB3解码的设计方案。方法是通过设置接收到二个连续“0”和三个连续“0”标识来判断接收连续“0”的个数,从而确定对“000V±”“B±00V±”“±1”码中“0”和“±1”的输出处理。经CCS开发环境仿真测试,仿真输出波形与理论输出值一致,满足实际通信系统的传输要求,具有实际应用价值。In digital baseband transmission system,HDB3 code keeps the polarity reversal of AMI code,reduces the length of consecutive“0”s,and is convenient to extract the timing information of transmitted waveform and detect errors.DSP chips have high-performance processing capabilities and can implement specific decoding algorithms through software programming to adapt to different communication standards and protocols.this paper proposes a design scheme for implementing HDB3 decoding using the TM320C54x series DSP chip through software programming.The method is to determine the number of consecutive zeros received by setting two consecutive“0”s and three consecutive“0”s received,so as to determine the output processing of“0”and“±1”in“000V±”,“B±00V±”,“±1”code.Through simulation testing in the CCS development environment,the simulated output waveform is consistent with the theoretical output value,meeting the transmission requirements of practical communication systems,and having practical application value.

关 键 词：DSP HDB3解码 数字传输 信号检测 CCS环境 仿真测试 

分 类 号：TN40[电子电信—微电子学与固体电子学]