论文部分内容阅读
以单光源为基础光源,使用内调制与外调制相结合的调制方式,成功搭建了双工激光通信系统,并对其进行了理论分析与实验验证。光源部分作为中心基站(Central Station,CS),使用内调制实现下行链路,向基站(Base Station,BS)发送请求信息;BS端则使用声光外调制的方式实现上行反馈,向CS端发送反馈信息,实现了两个终端之间的相互通信。结果表明,该双工通信系统室内传输稳定,传输速率因器件而定,下行最高可达30kb/s,上行最高可达3Mb/s,该通信系统可实现时分双工光通信,在相邻时段使用不同频率的光载波进行实时通信。
Based on a single light source, a duplex laser communication system was successfully built using a combination of internal modulation and external modulation, and theoretical analysis and experimental verification were carried out. The light source part serves as a Central Station (CS), and uses downlink modulation in an internal modulation system to send request information to a base station (BS). The BS end uses an acousto-optic modulation method to implement uplink feedback and sends the uplink feedback to the CS Feedback, to achieve the mutual communication between the two terminals. The results show that the duplex communication system has stable indoor transmission and the transmission rate depends on the device. Up to 30kb / s downlink and up to 3Mb / s uplink can be achieved. The communication system can realize time division duplex optical communication. During the adjacent time Use different frequency of optical carrier for real-time communication.