During july 2008, we have performed data acquisition in the following bands :

The parameters on the acquisitions are:

• 20480 samples
• Complex I/Q samples
• Resolution 12 bits.

For each frequency band, we have 2 files :

• A reference file with the RF antenna connector connected to a signal generator which generates a sinusoid at the center frequency. The ref file is used for IQ balance correction
• A file the RF antenna connector connected to a wide band antenna for real data acquisition.

An example of use of those files is given in the following matlab code :

function out=rx_post(nom)

fid=fopen(nom,'rb')

signal=fread(fid,20480*2,'float');

signal=signal(1:2:length(signal))+j*signal(2:2:length(signal));

size_data=20480;

Fs=7680; %in kHz

band = 2000; %in kHz

max_pos=0;

max=0;

f=abs(fft(signal)).^2;

plot(10*log10(f))

More details about the aquisition files, I/Q balance correction and the way to use the acquisition files can be found here.

Data acquisition (in zip format) can be found here.