I need to obtain some real (simulated) data to indicate noise in communication system.

How do I go about it? I need it for my thesis.

I don't know if denoising a set of signals will help so I can have the noise data samples.

I just need the noise data samples.

  • $\begingroup$ That's not how noise works, at all. You can, if you know it, subtract the original signal from your observation, but you need to know what the original signal was, which, in digital communications, is not the case – because that's what you want to figure out to receive information. $\endgroup$ – Marcus Müller Jul 24 '16 at 15:17
  • $\begingroup$ Your question still is pretty unclear: What do you need this noise estimate for? remember, noise is already a random process – so no two realizations of noise will be the same. $\endgroup$ – Marcus Müller Jul 24 '16 at 15:20

One easy way to grab a set of samples of physical noise is by acquring a cheap SDR, such as an RTL, tuning it to an empty band, and just reading and saving the samples. This should give a you a nice set of mostly white noise samples.

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  • $\begingroup$ Thanks so much @ MBaz. Pls can you just explain a little further how to go about this. Thanks. $\endgroup$ – Stephen Ojo Aug 2 '16 at 15:20
  • $\begingroup$ @StephenOjo There is a quickstart guide here: rtl-sdr.com/rtl-sdr-quick-start-guide $\endgroup$ – MBaz Aug 2 '16 at 21:13

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