基于 FPGA 的激光通信数据模拟器

• 作 者: 雷莉 郑建生 朱玉建
• 机 构: 武汉大学电子信息学院,武汉大学GNSS中心,
• 出 处: 通信技术
• 发表日期: 2013年06期
• 关键词: 激光通信 数据模拟器 Rocket I/O 8B/10B CRC32 laser communication simulator Rocket I/O 8B/1

随着空间激光通信技术的发展,作为空间激光通信系统检测的必备辅助工具之一激光通信数据模拟器也开始受到人们关注。笔者基于FPGA开发平台,以FPGA为控制核心,由PC机通过RS422通信模块控制系统工作状态,采用RockI/O硬核产生1.6 Gb/s的高速激光数据,采用FPGA对数据发生器产生的数据进行CRC编码和8B/10B编码,经过并串转换后模拟输出100 Mb/s的中速激光数据,最后采用光电转换模块将其转换为激光信号在空间传播,激光通信接收端经过光电转换,串并转换等数据处理,同时将接收数据转发给PC机进行存储分析,完成激光通信的测试。

With the development of space laser communication technology, laser communication data simulator, which is one of the necessary auxiliary tools for space laser communication system detection, has also attracted people’s attention. Based on the FPGA development platform and FPGA as the control core, the author uses the PC to control the working status of the system through the RS422 communication module, generates 1.6 Gb / s high speed laser data using RockI / O hard core, and uses FPGA to generate data from the data generator CRC encoding and 8B / 10B encoding, after parallel-serial conversion of analog output 100 Mb / s medium-speed laser data, and finally the use of photoelectric conversion module to convert it into a laser signal in space, the laser communication receiver after photoelectric conversion, Conversion and other data processing, at the same time forward the received data to the PC for storage analysis, to complete the laser communication test.