摘要
无线激光通信是接入网"最后一公里"问题最有效地解决方案之一。设计了基于FPGA的积木式结构的无线光通信机,发送端采用OOK直接调制方式,将调制光信号耦合到光纤中,通过光学发射天线压缩光束发散角;接收端采用乒乓操作以降低数据处理速度,8倍过采样恢复时钟信号。系统传输容量可扩展、功能可重构。对样机进行了测试,结果表明:该系统可以满足同时进行视频、数据、语音的传输和双工通讯,网卡满足10 Mbit/s、100 Mbit/s、1000 Mbit/s自适应。
Abstract： Wireless laser communication is one candidate method to solve the problems of the ＂last mile＂ methods access network for its easy access. The wireless optical communication machine modular structure is designed based on FPGA. OOK direct modulation is used for the sending end and the modulated optical signal is coupled into an optical fiber through compression, and optical transmitting antenna beam divergence angle; the receiving end of ping-pong operation is adopted to reduce the data processing speed and 8 times over the sample recovered clock signal. The transmission system capacity can be expanded, with the function of the reconfiguration. The pro- totype is tested; the results indicate that the entire experimental system can meet the simultane- ous transmission and duplex telephone communications video data, and that the network cards can satisfy 10 Mbit/s, 100 Mbit/s. 1000 Mhit/s adaptive.
出处
《西安理工大学学报》
CAS
北大核心
2014年第4期443-447,共5页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(61377080)
陕西省工业攻关科技计划资助项目(2013K06-08)
西安市碑林区科技计划资助项目(GX1408)
西安理工大学科技创新计划资助项目(2013CX013)
关键词
无线激光通信
调制电路
乒乓操作
wireless laser communication
modulation circuit
ping-pong operation
