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matlab实验

于 2023-05-11 发布 文件大小:9.95 kB
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数据拟合 1、在一个简单通信系统中,假设发送端发送一个正弦信号为,在传输过程中受到噪声干扰,求接收端接收到信号的信噪比,并作图显示原始图形和接收图形。 2、噪声通常被看作是随机错误,可以通过平均多个接收信号的方式进行滤波,滤波的过程就是消除噪声分量的过程。设接收的加噪信号为,输出信号为。在题1的基础上,使用式进行滤波,求滤波前后信噪比的大小,并显示原始信号图形、接收图形和滤波后图形

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