基于MATLAB的fsk调制解调

上传者: 43093901 | 上传时间: 2020-01-03 11:40:24 | 文件大小: 5.23MB | 文件类型: zip
1、FSK通信系统理论分析 (1)发射机模块:数字信号经过FSK调制后进行发射,利用载波的频率变化来传递数字信息。它利用基带信号离散取值的特点对载波频率进行频移键控。实现起来较容易,抗噪声与抗衰减的性能较好。在中低速数据传输中得到了广泛的应用。 最常见的是用两个频率承载二进制1和0的双频FSK系统。 (2)接收机模块:基带FSK调制信号对载波频率进行键控后,经过信道和加性高斯白噪声后进入接收机。接收机根据接收到的信号进行相干解调,恢复出原始信号,达到通信的目的。 2、系统实验仿真 (1)FSK信号波形产生;(2)FSK信号功率谱;(3)FSK接收信号波形;(4)FSK信号误码率曲线。

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