Matlab/octave sample stream, 8 bit samples FEEDBACK

GNU Radio
1

thanks Eric, thanks Lee.

octave import function worked straightforward, and was actually very
useful.

I still have some doubts about the 8bit samples.

I have tried the usrp_fft.py, but when I do require 8bit samples through
the provided command line option, the fft sink displays nothing at all,
even if the applications seems to be running all right.
the same happens when I import the python code for 8bit conversion into
my scripts. any hint?

vincenzo

2

On Wed, 2006-08-09 at 15:26 +0200, Vincenzo P. wrote:

the same happens when I import the python code for 8bit conversion into
my scripts. any hint?

Turn the gain up. The 8-bit samples are formed by sending only the 8
most significant bits of the 16-bit samples. So, if your signal is too
small, it will be dropped. With a 50 Ohm load on the Tx/Rx port of my
RFX-2400, I get no signal when the gain is at or below 53 dB. The noise
floor appears when the gain is set to a value greater than 53 dB.

-Lee