基于FPGA的激光通信数据模拟器  

Laser Communication Data Simulator based on FPGA

作　　者：雷莉[1] 郑建生[1] 朱玉建[2] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]武汉大学GNSS中心,湖北武汉430072

出　　处：《通信技术》2013年第6期1-4,共4页Communications Technology

摘　　要：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, as the necessary auxiliary tool, the laser communication data simulator, gradually attracts much attention from the people. Based on FPGA platform, a laser communication data signal simulator is designed and implemented, and this simulator generates high-speed simulation data at 1.6 Gb/s serial bit rate and low-speed simulation data at lOOMb/s serial rate. With computer to communicate with the simulator through RS422 serial port, the simulator receives the control instruction and returns status information. The laser data is transferred to the photoelectric convertor and converted to laser signal for space laser transmission. With photoelectric convertor, the receiving terminal converts the received laser signal to electrical signal. And then through FPGA deserializing and decodering process, the data is transmitted to the PC for inventory analysis. This simulator is quite useful in laser communication test.

关 键 词：激光通信 数据模拟器 ROCKET I O 8B 10B CRC32 

分 类 号：TN919.3[电子电信—通信与信息系统]