光模数转换系统中数据存储与传输

Data storage and transmission for optical analog-to-digital conversion systems

设计了一种光模数转换(OADC)系统中后端高速数据的存储和传输方案。该方案基于主-从现场可编程逻辑门阵列(FPGA)的结构,采用DDR3 SDRAM作为存储介质,基于PCI Express总线通过存储器直接访问(DMA)机制,使数据高度输出,实现了单通道高速数据的实时存储与传输。仿真和测试表明,该方案能够满足单通道输入数据速率为2.56Gb/s的光模数转换系统的要求。

This paper presents a scheme of high-speed data storage and transmission for optical analog-to-digital conversion（OADC） systems.The scheme adopts a master-slave architecture of field programmable gate array（FPGA） with storage mediums of DDR3 SDRAM and PCI Express external transmission bus using direct memory access（DMA） mechanism.A single channel real-time data storage and transmission was implemented.The results show that the design could meet the storage and transmission requirements of the OADC systems with a 2.56Gb/s data acquisition rate.