基于DSP的HDB3编码设计  

作　　者：刘剑丽 曹勇[1] 付兵 罗永德 

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》2025年第1期52-56,共5页Modern Transmission

摘　　要：HDB3编码是数字基带信号传输中常用的传输码型,具有较好的抗干扰性能和较强的检错能力,更适合长距离的信道传输。通过分析HDB3编码规则,提出利用DSP芯片通过软件编程实现HDB3编码的设计方案。利用设置输出数据流中两个V之间传号为1码的奇偶个数标志来控制B00V码的插入,通过设置输出数据流中传号为1、B00V码组的正负码的奇偶数个数来控制输出正负码,并通过添加空操作指令来调节编码速率。采用DSP芯片设计HDB3编码,可以实现较高的性能、较低的延迟、更灵活的编程和更低的功耗,同时具有较高的集成度和成本效益。经CCS开发环境仿真测试,仿真结果符合HDB3编码规则,达到了预期的效果,具有实际应用价值。HDB3 encoding is a commonly used transmission code type in digital baseband signal transmission,which possesses excellent anti-interference performance and stronger error detection capability,and is more suitable for long-distance channel transmission.By analyzing the HDB3 encoding rules,a design scheme for implementing HDB3 encoding using DSP chips through software programming is proposed.The insertion of B00V codes is controlled by setting the odd or even number of ones between two Vs in the output data stream,and the output positive or negative codes are controlled by setting the odd or even number of ones in the group of B00V codes.Adding no-operation instructions is used to adjust the encoding rate.Implementing HDB3 encoding using DSP can provide higher performance,lower latency,more flexible programming,and lower power consumption,while also offering higher integration and cost-effectiveness,making it an ideal choice for many digital communication systems.Simulation tests conducted in the CCS development environment show that the simulation results conform to the HDB3 encoding rules,achieving the expected effects and demonstrating practical value.

关 键 词：DSP HDB3编码 传输编码 信号检测 CCS 仿真测试 

分 类 号：TN911.22[电子电信—通信与信息系统]