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[Discuss-gnuradio] Matlab signal detection/analysis

From: Jake Hertenstein
Subject: [Discuss-gnuradio] Matlab signal detection/analysis
Date: Tue, 24 Jun 2008 23:36:34 +0200

Hello all,

I am attempting to analyze data sets recorded by the USRP in Matlab for
the purpose of signal detection/analysis. The signal detection
requirement must be met by identifying prominent signals and returning
the frequency and signal strength. In doing this I have come to identify
several important questions which I cannot answer myself:
Given a known decimation, how can one determine the sampling rate of an
output data file?
Since the "tuned" frequency is subtracted from the signal, how can one
apply the FFT in Matlab to identify the original signal's frequency?
What are the units of the data file values?

Thanks in advance,
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