Any response?
alanluo wrote:
>
> Hi, everyone:
>
> recently I have a project which need to use higher modulation scheme, such
> as 16QAM or 64 QAM. I noticed that in python/gnuradio/blksimpl, there is
> no demodualtion part for higher modulation schemes. Does that mean we need
> to finish it b
Hi all,
I am trying to create a two transmitter setup with two USRP2s connected
with the MIMO cable. I use the trunk version of GNURadio (Friday, Jan
29,2010) on laptops running Ubuntu 9.04.
>From previous emails and looking at the code, the relevant code for two
transmitter setup seems to be
Hi Manav
I haven't really fixed it, but rather get a different error. To do this,
I updated to the latest copy of firmware and fpga images as Josh had
suggested.
I am yet to try the debug port and see if it is failing to lock.
Hopefully I can try this today.
Ian.
__
Hi, everyone:
recently I have a project which need to use higher modulation scheme, such
as 16QAM or 64 QAM. I noticed that in python/gnuradio/blksimpl, there is no
demodualtion part for higher modulation schemes. Is that means we need to
finish it by ourself?
And i also noticed that from the mai
On Sun, Jan 31, 2010 at 06:52, Brian Padalino wrote:
>> But from my tests I see that
>> 1 bit error in -> 7 bit errors out
>> 2 consecutive bit errors in -> 2 errors in the output
>> 3 consecutive bit errors in -> 7 errors in the output
>> 4 consecutive bit errors in -> 4 errors in the output
>>
On Sun, Jan 31, 2010 at 7:36 AM, Mattias Kjellsson wrote:
> Hi list,
>
> There is a function called 'ber' in receive_path.py in the python bert
> example.
>
> def ber(self):
> return (1.0-self._ber.density())/3.0
>
> From where does the 3 originate? Some lines above, there is this comment:
>
SR-DVB demo video on youtube
http://www.youtube.com/watch?v=S5nGBDCxhmk
regards
vincenzo
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Hi list,
There is a function called 'ber' in receive_path.py in the python bert
example.
def ber(self):
return (1.0-self._ber.density())/3.0
From where does the 3 originate? Some lines above, there is this comment:
# Descramble BERT sequence. A channel error will create 3 incorrect bi
Hi Adib
Thanks for the reply.
I check it in the net and download it. I don't know about costas loop and
clock recovery in detail. may I know how they they estimate frequency
offset, and recover it?
as far as I know, they are using gr.quadrature_demod_cf(1) & and subtract
it using gr.single_pole_
