This paper presents an all-digital close-loop operation based on DSP circuits, which uses the two-frequency serrodyne modulation to modulate and demodulate the optic route.
字信号

路的谐振式光纤陀螺全
字闭环是采用双频率
字锯齿波相位
制技术对光路进行了相应的
制和解
。
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To turn a light into a Li-Fi router involves modulating its output, to carry a message, and linking it with a network cable to a modem that is connected to a telephone or cable-broadband service, just like a Wi-Fi router.
要将一个
见光源变成
够携带信息
Li-Fi路由器,需要调制其光强以及用网线将其与一个调制解调器(与电话或宽带网线相连)连接,一如Wi-Fi路由器。
教程(第二版) The communication medium was a computer, a phone line and a modem. I soon got access to the necessary equipment, learned how to use the technology from a friend and participated in the virtual classroom five to seven days a week.
这种课程
媒介是一台电脑、一条电话线和一个调制解调器。我很快配齐了必要
设备并跟一个朋友学会了电脑操作技术,于是我每周用5到7天在网上
虚拟课堂里学习英语。
作 And we're introducing a family of products with Macintosh: the image writer printer, an external disk drive, a modem, a numeric keypad, a Macintosh carrying case, and a security kit so your Macintosh won't go anywhere without you.
图像
入打印机,一个外部磁盘驱动器,一个调制解调器,一个数字键盘,一个Macintosh
手提箱,还有一个安全工具包,这样你
Macintosh就不会扔下你去别
地方了。