Simulink星座图显示.pdf

权利声明： 此为雷声天下个人学习所用， 愿意与广大网友交流， 不可以被用作其他商业用途， 如有违反，必究责任 SimulinkSimulinkSimulinkSimulink 中星座图的显示中星座图的显示 Simulink 通讯系统仿真中对于星座图显示有设置专属的模块支持，而且给出了一个模型 mdl 文件示例：用于显示星座点图 其中重要的模块是 Discrete-Time Scatter Plot Scope 模块，下面给出该模块的描述信息： The Discrete-Time Scatter Plot Scope block displays scatter plots of a modulated signal, to reveal the modulation characteristics, such as pulse shaping or channel distortions of the signal. The Discrete-Time Scatter Plot Scope block has one input port. This block accepts a complex scalar-valued or column vector input signal. The block accepts a signal with the following data types: double, single, base integer, and fixed-point for input, but will cast it as double. 此外还是用了调制模块，具体的可以参照该子库的模型。

通过修改各个模块的参数，可以得到如下结果： 2-BPSK2-BPSK2-BPSK2-BPSK 4-QAM4-QAM4-QAM4-QAM 8-QAM8-QAM8-QAM8-QAM 16-QAM16-QAM16-QAM16-QAM 32-QAM32-QAM32-QAM32-QAM 64-QAM64-QAM64-QAM64-QAM 128-QAM128-QAM128-QAM128-QAM 256-QAM 除此之外 还有其他模块在 Comm Sink 子模块库中，包括离散时间眼图、离散时间星座轨迹图、 误码率计算。