I、Q调制和星座图
数据经过信道编码之后，被映射到星座图上。下面讨论星座图的概念。图1就是QAM调
制器的基本原理框图，这里包含几个主要的概念：什么是I、Q调制；数字信号怎样映射到
极坐标上面。
I, Q modulation and constellation after channel coding data are being mapped to the constellation diagram. Discussed below constellation diagram concept. Figure 1 is the basic principle of QAM modulator block diagram, here contains several key concepts: What is the I, Q modulation how the digital signal is mapped to polar coordinates above. (2009-11-19, Video, 174KB, 下载59次)