[Discuss-gnuradio] Inband signaling and m-blocks for Frequency Hopping

[Raullen Chai]

Hi, All,

In my current design, frequency hopping is designed to happen over
32MHz bandwidth, as fast as possible. (although I admit that by using
USRP1, it may not be that fast as I expected). However, I am not very
clear about how to do so.

I checked the implementation of bluetooth (gr-bluetooth-0.4) but did
not get any ideas/examples/instances of FH. (Someone interested in
bluetooth is recommended to have a look at this.)

I did create a piece of code (as shown below) following
usrp_spectrum_sense.py. However, .tune() gives me a huge and
unfavorable delay time. Is there any better way to impalement FH?

 .....
 def set_freq(self):
   target_freq = 900e6 + 3.2e6 * random.randint(1, 10)
   self.rx.tune(0, self.rx_subdev, target_freq)

   while 1:
       time.sleep(0.3) # Wait
       fg.set_freq()
  .....


BTW, I read considerable messages from the Mail Archive, and realized
that inband signaling and m-blocks is an ideal solution for FH.
Does anyone have any examples/codes/documents/suggestions regarding
the inband signaling and m-blocks for FH?


Thanks a lot!
--
--
Best Regards
(Raullen) Qi Chai

The highest excellence is like that of water! www.raullen.net



-- 
--
Best Regards
(Raullen) Qi Chai

The highest excellence is like that of water! www.raullen.net