Monday, September 30, 2024

Re: dvbt2 transmitter can not be real-time with LimeSDR

On 30/09/2024 10:27, Ron Economos wrote:
> Sorry, but UHD is a big CPU hog for transmitting (at least with the
> B2X0 series of devices).
>
> Ron
I just did a quick test using "benchmark_rate" into a B210, doing a "tx"
test at 30Msps.  That consumed 52% of a single
  CPU on my i5-6200 system at 2.7GHz.  There were a handful of U during
the 1 minute test.

Since I don't have LimeSDR setup on my machine, I can't compare. Nor can
I compare to BladeRF (the other USB-based
  tx-capable SDR).


>
> On 9/30/24 07:21, Marcus D. Leech wrote:
>> You should investigate the transport parameters for UHD USB devices
>> here:
>>
>> https://files.ettus.com/manual/page_transport.html#transport_usb
>>
>> UHD *IS* a large library, because it kind of has to be.  It supports
>> many different hardware devices, going back to the USRP1
>>   originally sold in 2004.  But having said that the "sample moving"
>> pathways in the code are quite efficient.  One shouldn't
>>   confuse the size of the library with the efficiency of the critical
>> pathways.
>>
>>
>

No comments:

Post a Comment