Hanwen,
Thanks for confirming the fix. The slope you see with decimation 5 is
indeed the fault of the CIC. Because 5 is odd, we can't use a halfband
filter, and instead need to use the CIC for all decimation.
Decimation or Interpolation which is a multiple of 4 will be the
flattest, and m
2009/12/3 hanwen
> I've applied the fix to my receiver. It works. The attachment is the
> spectrum before and after the fixing at decimation rate 4 and 5. It shows at
> decimation rate of 4 the 3dB bandwidth is really widened from 7.5MHz to
> 9.5MHz.
> But when decimation rate is 5, the spectrum
Looks like the USRP1 code had the same problem, so I pushed a fix for
that as well:
http://gnuradio.org/cgit/matt.git/
on branch u2_xcvrfix
Matt
On 11/26/2009 11:27 AM, Matt Ettus wrote:
Thanks for finding this bug. I have applied your fix to my git repo. I'm
away from an
Thanks for finding this bug. I have applied your fix to my git repo.
I'm away from any equipment right now, but if someone could confirm that
this works, Johnathan can get it in the mainline code.
Matt
On 10/08/2009 01:26 PM, Stephen Lai wrote:
Hi All,
I've been having problems sending a
Hi All,
I've been having problems sending a 25 Msym/s BPSK stream between two
USRP2's with XCVR2450 daughterboards. I've tracked it down to the Rx
circuitry limiting the passband to ~14 MHz when at least 20 MHz should
be available.
Sifting through the db_xcvr2450.c/db_xcvr2450.cc files, I th
