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From: Jodhbir singh on 24 Dec 2009 01:02
I am generating UWB signal of 2GHz with Matlab sampling frequency(for resolution) of 8GHz.Thus, each UWB pulse has 4 sample values.

Now the number of samples in the received signal are 800.
I do compressed sensing with Phi=randn(400,800)

reconstruct the signal successfully to 800 samples.
Now the question is, the compression in Phi to 400 samples means:

1. sampling frequency of 4 GHz (Matlab digital frequency)
or
2. sampling frequency of 1GHz (signal frequency)

when I do reduced-rate sampling then do I consider the frequency to be Matlab freq or signal frequency


Moreover, What if both the frequencies are same 2GHz?
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