基于LVDS的高可靠性长线传输设计  

Design of Long-Distance Transmission with High Reliability Based on LVDS

作　　者：刘佳宁[1] 文丰[1] 王淑琴 刘东海[1] LIU Jianing, WEN Feng , WANG Shuqin, LIU Donghai(National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan 030051, Chin)

机构地区：[1]中北大学电子测试技术国家重点实验室,太原030051

出　　处：《电子器件》2017年第5期1209-1213,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(51225504)

摘　　要：针对高速数据远距离传输时可靠性低的问题,提出了一种基于LVDS的高可靠性长线传输系统。采用电流环传输指令,增强其抗干扰能力,并在逻辑上设计了双重计数消抖的防指令误判技术;重点介绍了一种简单、易实现的10B/6B向前纠错编码,以牺牲一定有效带宽为代价,通过对线上传输的有效数据增加监督码元,大大降低了数据传输的误码率。经实践验证,在总长119 m,由多级低频电连接器连接的屏蔽双绞线上,该系统实现了418 Mbit/s码率串行数据的零误码率传输。In viewed of the low reliability in the high-speed and long distance data transmission,the design of longdistance transmission system with high reliability was put forward based on LVDS interface. The current loop signal transmission methods increased anti-jamming capability of command,and the dithering elimination technology of double counter prevented instruction misjudgment. It is mainly introduced about 10 B/6 B on-line coding mechanism of FEC which was easy to implement at the cost of sacrifice on valid bandwidth,and increased of monitor code to encoded the valid data on line,the bit error rate is greatly decreased and the realization of data transmission increased.By the practical test,the LVDS serial data at the rate of 418 Mbit/s could realize zero bit error rate transmission in119 m shielded twisted-pair with lots of low-frequency connectors.

关 键 词：长线传输 高可靠性 LVDS接口 10B6B编码 零误码率 

分 类 号：TN811[电子电信—信息与通信工程]