How to add AWGN noise using randn function?
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I have a discrete time signal which I generated as follows:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/487058/image.png)
I wish to add AWGN noise using randn() function with mean=0 and variance=0, 0.1, 0.5, 1, 1.5 and 3.
The code i have written is:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/487063/image.png)
How can I modify my function to add the noise and later on, demodulate it back into a matrix (as shown in 'w' array)?
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