or equal to 50MS/s (the bandwidth
of the signal), you can still demodulate the signal.
Regards,
Kyeong Su Shin
보낸 사람: Kyeong Su Shin
보낸 날짜: 2018년 4월 27일 금요일 오후 10:40:31
받는 사람: mehtap özkan; discuss-gnuradio@gnu.org
제목: RE: [Discuss-gnuradio] Fundamental question
Hi Mehtap
On Fri, 2018-04-27 at 15:57 +0300, mehtap özkan wrote:
> Based on your calculations, I have decided to get a LIMESDR-PCIe.
> The sampling rate will be 122,88 MSPS which will give 61.44 MHz I and 61.44
> MHz Q.
I think it is the other way around: The Sampling rates are 61.44 MHz on
I and
Based on your calculations, I have decided to get a LIMESDR-PCIe.
The sampling rate will be 122,88 MSPS which will give 61.44 MHz I and
61.44 MHz Q.
That will be enough to demodulate a 50 MHz wide QPSK modulated signal.
I am not sure if I can decimate the 122,88 MSPS by 2 and still being able
to
The B2x0 family of USRPs can do 16, 12, and 8 bit complex samples over the
USB cable. 12 bit ends up incurring CPU load to convert back into 16 bit
values on the host computer, but saves on USB throughput, useful on some
computers. The maximum sample rate is 61.44 MS/s using one channel. UHD can
th
Unless I'm mistaken the B210 can do 8 bit sample depth, giving you 1 Gbps
data rate at 62.5 MS/s. This might help.
On Thu, Apr 26, 2018 at 6:11 AM, Derek Kozel wrote:
> Hello Mehtap,
>
> There will have some filter roll off as well, so the rule of thumb is to
> have a margin in your sample rate
Hello Mehtap,
There will have some filter roll off as well, so the rule of thumb is to
have a margin in your sample rates. A safe margin is that your bandwidth of
interest be no more than 80% of the theoretical bandwidth of your sample
rate, so your recommended rate would be 62.5 MS/s. Helpfully 6
Correct, you need at least 50 MS/s complex (I+Q) which is 100 MS/s or
400 MB/s from an I/O point of view. GNU Radio blocks can be used for
real time decoding. Depending on what kind of "decoding" you want to do,
the processor may not be able to keep up.
On 04/26/2018 04:05 AM, mehtap özkan wro
Dear All,
Mine is more of a fundamental question.
I have a 50 MHz (3 db bandwidth) wide QPSK signal.
I am aware that Gnuradio blocks can not be used for real time decoding.
In order to record the signal and demodulate it correctly, what should the
minimum sampling rate be?
If the minimum sampling
