plotting the power spectrum density
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Hello; i want to plot the PSD (dBm/Hz) against the frequency (MHz) i only have the IQ data as vector and the sampling frequency.
please help me to plot it in the right way using Matlab code.
Thank you.
回答（1 个）
dpb
2016-6-11
There's a good example at
doc fft
4 个评论
mohammed ali
2016-6-11
dpb
2016-6-11
Type it and see...
mohammed ali
2016-6-11
How do I (or are any of us here, for that matter are to) know what frequency your data are? That's entirely up to the data generation/collection process.
BUT if you do know the sampling frequency (and, pretty much, you've got to get anywhere), then the example pointed to previously shows how the frequency spectrum is related; presuming the data you have are somehow generated analogously to performing an FFT on a time-sampled signal. I have no klew what an "IQ data" vector would be, sorry...
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2016-6-11
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