基于PSK调制的激光通信系统研究

基于PSK调制的激光通信系统研究
Research on PSK modulation-based laser communication systems
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作　　者：王珊[1] 肖沙里[1] 彭光辉[2] 徐山河[1]
Wang Shan,Xiao Shali,Peng Guanghui,Xu Shanhe（1. Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China,Chongqing University,  Chongqing 400030, China;2. Wuhan National Laboratory for Optoelectronics,  Huazhong Institute of Optoelectronic Technology, Wuhan 430223, China）
机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400030 [2]华中光电技术研究所武汉光电国家实验室,武汉430223
出　　处：《光通信研究》 2015年第2期 64-66页,共3页
Study on Optical Communications
摘　　要：设计了一种基于PSK（相移键控）外调制的激光通信系统。该系统选用637nm的全固态激光器作为光源,利用FPGA（现场可编程门阵列）开发板作为调制解调硬件控制声光调制器将调制信号加载于激光,通过大气信道传输,采用光电倍增管作为激光接收器。对传统PSK解调进行了改进,消除了相位模糊现象,搭建了完整的激光通信系统实验平台。实现了通信速率为115.2kbit/s、误码率低于10^-8的激光通信系统。
This paper proposes a PSK external modulation-based laser communication system.Using a 637 nm all-solid-state laser as a light source and FPGA demoboard as the modem hardware to control the acousto-optic modulator,this system applies the modulated signals to the laser and,using aphotomultiplier tube as a laser receiver via atmospheric channel transmission,improves the traditional PSK demodulation,eliminates phase ambiguity and sets up a complete experiment platform for laser communication systems,realizing a laser communication system with the serial communication rate of 115.2kbit/s and bit error rate of lower than 10^-8.
关键词：相移键控 相位模糊 激光通信 现场可编程门阵列
PSK ; phase ambiguity ; laser communication ; FPGA ;