一种改进的高速通信系统中的数据对齐方案  

An improved data alignment scheme in high-speed communication system

作　　者：张新 万杰 蒋励 王瑜 胡阳 ZHANG Xin;WAN Jie;JIANG Li;WANG Yu;HU Yang(School of Electronic Engineering,Xi'an University of Posts and Telecommunications,Xi'an 710121,China)

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121

出　　处：《西安邮电大学学报》2020年第5期22-27,共6页Journal of Xi’an University of Posts and Telecommunications

基　　金：科技部重点研发项目(2018YFB2201305)。

摘　　要：针对高速数据通信系统中因不同通道的时延差异造成的数据延迟不一致问题,提出一种多通道高速数据对齐的实现方案。通过时钟芯片产生标准的周期可配的基准信号,在发送侧产生同步于基准时钟的采样时钟,在接收侧产生同步于基准时钟的读时钟,利用采样时钟控制发送侧多通道同时采样,并利用读时钟控制接收侧多通道独立队列的数据读取。将所提方案运用在25 G PON系统中,实验结果表明,该方案能够完成高速通信系统中的多通道数据对齐,且系统有较高的鲁棒性和资源利用率。In order to solve the problem of inconsistent data delay caused by the delay difference of different channels in high-speed data communication systems,a processing method for high-speed data alignment is proposed.A standard Period-matched reference signals is generated by the clock chip.Then the sampling clock synchronized to the reference clock is generated on the sending side and the reading clock synchronized to the reference clock is generated on the receiving side.The sampling clock is used to control simultaneous sampling of multi-channel on sending side and the reading clock is used to control data reading of multi-channel independent queue on receiving side.Experimental results on a 25 G PON system showed that the scheme can complete multi-channel data alignment in a high-speed communication system,and the system has high robustness and resource utilization.

关 键 词：多通道数据对齐 高速数据通信 基准时钟 时钟同步 异步先进先出 

分 类 号：TN919[电子电信—通信与信息系统]