空间激光通信中高速伪随机序列及多路器  

High-speed pseudo-random sequence and multiplexer in space laser communication

作　　者：张德瑞[1] 佟首峰 宋延嵩 杨阳[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022 [2]空地激光通信技术国防重点学科实验室,吉林长春130022

出　　处：《红外与激光工程》2012年第11期3061-3064,共4页Infrared and Laser Engineering

基　　金：国家863计划;教育部博士点学科建设专项基金

摘　　要：在开展综合信息系统演示试验前,为了实现激光通信系统的单独测试,需对模拟的各种载荷选择性输出及对误码率进行测试。研制了一种基于FPGA的嵌入式智能多路器及高速伪随机序列生成器,设计高速并串转换电路及时钟电路实现高速伪随机序列的传输,速度可达3 Gbps,用于误码率测试。其中高速的伪随机序列速率智能可调,速率范围为750 M到3 G。设计兼容多种电平的差分多路器,数据传输的类型通过多路器选择性输出,输出的电平为固定的LVPECL。如:视音频的串行数据流,伪随机序列,模拟数据源。Before developing an integrated information system for demonstration and experiment, in order to achieve a separate test of laser communication systems, a variety of loads need to be selective output and bit error rate need to be tested. A high speed FPGA-based embedded multiplexer and high speed pseudo-random sequence generator were developed in this paper. With high speed conversion between parallel and serial circuit and clock circuit, the transmission speed of pseudo-random sequence could up to 3 Gbps, which was used for the bit error rate testing. High-speed pseudo-random sequence was adjustable smart rate, which ranging from 750 M to 3 G. Design differential multiplexer which could be compatible with many levels, the output type of data transmission could be selected by the multiplexer. The output level is fixed LVPECL level, such as video and audio serial data stream, pseudo-random sequences, data source simulation.

关 键 词：空间激光通信 高速串行传输 伪随机序列 多路器 

分 类 号：TN919[电子电信—通信与信息系统]