Thank you so much, Brian.
It saves a lot of time for me.
I don't have any idea for the outer and inner coefficients. But it seems
that the sequence is 'Outer - Inner - 131072( = 0.5 * 2^18) - Inner - Outer.
I can keep going for the analysis with this result.
It seems that the 'inner' and 'outer'
Tim Pearce wrote:
Hi All,
I've modified the source to generate timesamples (as a seperate
stream) from the USRP2 source blocks and noticed an issue - if the PC
is struggling some frames have a timesample dated before the
timesample of a frame processed before it.
It's possible I've done som
Hi guys,
Can someone explain how the scaling on the USRP2 (or USRP1) FFT window
works? At first I assumed that the scale was referenced to 1mW (so that 0dB
= 1mW), but after making some measurements with other equipment, this
doesn't seem to be the case. Is this DBoard dependent?
Thanks,
Jordan
_
2009/11/9 fangming he :
> Hi, All,
>
> I cannot understand why the phase accumulator should be limited to
> [-16*pi,16*pi]. Please clarify it for me if you have some ideas on it.
>
> The following is the code in this class:
> if (fabs (d_phase) > 16 * M_PI){
> double ii = trunc (d_phase / (2
Hi All,
I've modified the source to generate timesamples (as a seperate stream) from
the USRP2 source blocks and noticed an issue - if the PC is struggling some
frames have a timesample dated before the timesample of a frame processed
before it.
It's possible I've done something wrong modifying t
Hi, All,
I cannot understand why the phase accumulator should be limited to
[-16*pi,16*pi]. Please clarify it for me if you have some ideas on it.
The following is the code in this class:
if (fabs (d_phase) > 16 * M_PI){
double ii = trunc (d_phase / (2 * M_PI));
d_phase = d_phase - (
On Mon, Nov 9, 2009 at 11:20 AM, ILKYOUNG KWOUN wrote:
> Hello folks,
>
> I need to analyze the filter characteristics of two halfband filters in
> USRP2. Since I have littel experience on Verilog HDL, I cannot pinpoint what
> exact coefficients the two halftband filters are adopting(I am reviewin
Hello folks,
I need to analyze the filter characteristics of two halfband filters in
USRP2. Since I have littel experience on Verilog HDL, I cannot pinpoint what
exact coefficients the two halftband filters are adopting(I am reviewing
'gnuradio/usrp2/fpga/sdr_lib/hb_dec.v' and
'gnuradio/usrp2/fpga
Yes I use LFRX.
Thanks the suggestion, i will try.
2009/11/7 Karthik :
> On Thu, Nov 5, 2009 at 10:25 PM, Matt Ettus wrote:
>> Kóczián Gergely wrote:
>>>
>>> Hi all!
>>>
>>> I use my usrp without antenna. I just want to meassure the noise but,
>>> at 0Hz has always a peak.
>>>
>>> I saw that, th
