On Tue, Sep 15, 2009 at 9:41 PM, Miklos Christine
> I'm trying to sample the 802.11b wireless channels but the USRP2. I'm
> currently using revision 10689 of Gnuradio.
> I've added code to bbn_80211b_rx.py to connect the gr_probe_signal_f() to
> the top block.
> To sample the channel, I use gr.probe_signal_f().
> Here's the code to connect the block:
> self.connect(self.u, self.conv_c2f, self.probe2)
> Then I use the gr.probe_signal_f().level() to retrieve the signal in a loop.
> data_file = open('data.txt', 'w')
> T1 = time.asctime()
> while cs_samples < 1000000:
> CST = self.tb.probe_channel()
> data_file.write(str(CST) + '\n')
> cs_samples += 1
> T2 = time.asctime()
> def probe_channel(self):
> return self.probe2.level()
> I was wondering if this is the fastest way to sample the channel from
> python. When I compute how long this process takes, it appears that I can
> get a sample every 8-9 microseconds, which seems a lot slower than what the
> USRP2 is built to do. Am I sampling the channel in an incorrect way?
> I'm running this on a machine with a Intel Quad Q9650 @ 3GHz.
> Miklos Christine