摘要
将红外无线通信应用于标准的室内10Base T以太网(Ethernet)中,在点对点红外无线通信的基础上实现了与以太网兼容的红外无线通信系统;通过红外无线适配卡将以太网的曼彻斯特编码转换成适于红外无线传输的4脉冲位置调制编码,同时将以太网帧格式在其物理层上进行处理,把以太网的传输媒质从有线的铜缆双绞线转换为红外光线;并根据红外器件的发光特性,应用光学准直透镜有效地拓展了传输距离。
An infrared wireless communication system is designed in 10Base\|T Ethernet based on point\|to\|point infrared wireless communication. The wireless data communication in Ethernet is achieved through transforming Manchester code to 4PPM code and Ethernet data frames are re\|packaged to be transmitted in physical layer by infrared wireless card. The transmission media of Ethernet is changed from unshielded twisted paired cable to infrared light. According to the character of infrared transceiver, optical collimation lens is applied in the infrared wireless communication system to extend the transmission distance of infrared transceiver.
出处
《红外与激光工程》
EI
CSCD
北大核心
2003年第4期339-342,共4页
Infrared and Laser Engineering
基金
天津市自然科学基金资助项目(023622411)
关键词
以太网
红外无线通信
红外无线适配卡
光学准直透镜
Ethernet
Infrared wireless communication
Infrared wireless card
Optical collimation lens
