Measure SNR (dB) of Signal (IQs) and adding AWGN for different SNRs

[sets]

I am reading a wav file in which there are IQs (IQIQIQ....).I want to know the SNR of this signal and want to make copies of signal of different SNRs (5, 10, 15, 20, 25, 30) by adding AWGN.Kindly find attached VI and .wav file.

[GerdW]

Hi sets,

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@sets wrote:

I am reading a wav file in which there are IQs (IQIQIQ....).

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When the I and Q samples are interleaved then you should decimate the waveform sample array:

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@sets wrote:

I want to know the SNR of this signal and want to make copies of signal of different SNRs (5, 10, 15, 20, 25, 30) by adding AWGN.

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Do you know the formulas you want to apply on your data?

What have you tried and where are you stuck?

(Btw. it often helps to explain the abbrevations used in your text, like SNR and AWGN…)