OFDM Transmitter & LO Feedthrough

Dear all, I got a question regarding the implementation of a transmitter using C++ and UHD. I am working with a N310. My problem is the following: I want to implement an OFDM transmitter using C++ and the UHD lib. I already implemented the TXRX using the GNURadio framework. However, possibl

AW: AW: USRP Errror "USER2: Invalid reason associated with wait request"

Thank you for that info! So I know at least where not to look for the problem :)) BR, Anton Von: Marcus D. Leech Gesendet: Mittwoch, 15. Juni 2022 22:40:17 An: Dobler, Anton; discuss-gnuradio@gnu.org Betreff: Re: AW: USRP Errror "USER2: Invalid reason assoc

AW: USRP Errror "USER2: Invalid reason associated with wait request"

D. Leech Gesendet: Mittwoch, 15. Juni 2022 21:54:53 An: discuss-gnuradio@gnu.org Betreff: Re: USRP Errror "USER2: Invalid reason associated with wait request" On 2022-06-15 15:33, Dobler, Anton wrote: Dear all, I am running GNURadio 3.8.1 with UHD3.15 LTS on an Ubuntu 18.04 machi

USRP Errror "USER2: Invalid reason associated with wait request"

Dear all, I am running GNURadio 3.8.1 with UHD3.15 LTS on an Ubuntu 18.04 machine with 16 cores (Intel(R) Xeon(R) Gold 6144 CPU @ 3.50GHz) and a 10GigBit Ethernet card (DPDK enabled). The output of the benchmark_rate test is: root@dobler-Precision-7820-Tower:/home/dobler/rfnoc/uhd/host/buil

UHD4.2 & DPDK

Dear community, I try to use DPDK together with UHD4.2 but I get the following error: ./benchmark_rate --args "mgmt_addr=169.254.2.13,addr=1.0.1.2, second_addr=1.0.2.2,use_dpdk=1" --rx_rate=125e6 [INFO] [UHD] linux; GNU C++ version 9.4.0; Boost_107100; DPDK_19.11; UHD_4.2.0.0-4-g04d14cd7 [DE

AW: RFNoC image builder problem

Gesendet: Donnerstag, 19. Mai 2022 16:21 An: Dobler, Anton Cc: discuss-gnuradio@gnu.org; usrp-us...@lists.ettus.com Betreff: Re: RFNoC image builder problem [https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif]Hi Anton, Did you install all of the dependencies listed here<ht

AW: RFNoC image builder problem

Von: Dobler, Anton Gesendet: Donnerstag, 12. Mai 2022 17:19 An: discuss-gnuradio@gnu.org; usrp-us...@lists.ettus.com Betreff: RFNoC image builder problem Dear community, I am running UHD4.2 on Ubuntu 20.04. When I try to run rfnoc_image_builder, I get the following error

AW: [Discuss-gnuradio] Impulse response in DVB-T, someboby knows how to

Either you may go for a sequence, for example CAZAC or PN-sequences, that, if you cross-correlate the receive signal with the transmitted, show you the channel impulse response. The cross-correlation can be done in frequency domain using the properties of Fourier transformation. The easier app

RFNoC image builder problem

Dear community, I am running UHD4.2 on Ubuntu 20.04. When I try to run rfnoc_image_builder, I get the following error: rfnoc_image_builder --help Traceback (most recent call last): File "/usr/local/bin/rfnoc_image_builder", line 29, in from uhd.imgbuilder import image_builder ImportError

AW: RFNoC, UHD4.0

: Dobler, Anton; discuss-gnuradio@gnu.org; usrp-us...@lists.ettus.com Betreff: Re: RFNoC, UHD4.0 On 11/05/22 15:33, Marcus D. Leech wrote: > On 2022-05-11 15:24, Dobler, Anton wrote: > > I use a n310 and have two 10gigbit for data streaming and one 1gigbit > > for managing the device… th

AW: RFNoC, UHD4.0

...@lists.ettus.com Betreff: Re: RFNoC, UHD4.0 On 2022-05-11 14:45, Dobler, Anton wrote: Dear Community, I try to set up a basic flowgraph in GRC consisting out of a null source, a tx streamer and DUC and a TX radio. I use UHD4.0 and GR3.8.2. However, I get the following error message: RuntimeError

RFNoC, UHD4.0

Dear Community, I try to set up a basic flowgraph in GRC consisting out of a null source, a tx streamer and DUC and a TX radio. I use UHD4.0 and GR3.8.2. However, I get the following error message: RuntimeError: RuntimeError: Error during RPC call to `init'. Error message: RuntimeError: R

AW: Realtime Kernel, UHD 4.0, GNURadio

first simple approach would be to use htop and find out which thread is close to 100% CPU load. If you change the htop Display Options to "Show custom thread names" it should be fairly simple to get a better understanding of your issue. Cheers Johannes On 05.05.22 20:52, Dobler, Anton wro

Realtime Kernel, UHD 4.0, GNURadio

Dear community, I am running UHD 4.0 and GNURadio 3.10 on a Ubuntu 20.04 with a N310 as a SDR. When I execute the benchmark_rate example with DPDK enabled, I do not see any under- or overruns even with the sampling rate set to 125 MHz, however using GNURadio - DPDK enabled here as well - I do

AW: 3D plots or image display in GR

Hi Marcin, Take a look at this: https://github.com/antondobler/gr-SurfaceInspector? I recognized that there is still a problem concerning memory. I have not found that error until now, however if you can make any improvements for that block let me know! Should be kind of a starting point! ?B

AW: 3D plots or image display in GR

Hi, You can check vis3d from https://github.com/gnuradio/gr-inspector/tree/maint-3.7/lib. This gives you a qt surface plot. I ported this block to 3.8 and it works so far. Still bit buggy but at least it enables 3d "realtime" plotting. cheers Von: Disc

AW: USRP, GPIO toggling and Gnuradio

Could it be that the set_gpio_attr() command resets the OUT register before setting the new value? BR Von: Marcus D Leech Gesendet: Samstag, 11. September 2021 22:01 An: Ed Criscuolo Cc: Dobler, Anton; Discuss-gnuradio@gnu.org Betreff: Re: USRP, GPIO toggling

AW: AW: AW: AW: USRP, GPIO toggling and Gnuradio

dvice how to write a low latency OOT block for GNURadio? Is there a GR-API call to priorize a block? Thank you for any hints! Von: Marcus D. Leech Gesendet: Freitag, 10. September 2021 19:47 An: Dobler, Anton; discuss-gnuradio@gnu.org; usrp-us...@lists.ettus.com Be

AW: AW: AW: USRP, GPIO toggling and Gnuradio

Gesendet: Freitag, 10. September 2021 18:59 An: Dobler, Anton; discuss-gnuradio@gnu.org Betreff: Re: AW: AW: USRP, GPIO toggling and Gnuradio On 2021-09-10 12:08 p.m., Dobler, Anton wrote: Is there any alternative to the standard GPIO UHD interface, that allows me the desired speed and is this issue

AW: AW: USRP, GPIO toggling and Gnuradio

. September 2021 18:04 An: Dobler, Anton; discuss-gnuradio@gnu.org Betreff: Re: AW: USRP, GPIO toggling and Gnuradio On 2021-09-10 11:54 a.m., Dobler, Anton wrote: I am extracting the package rate of a receive signal using a rather complex GRC flowgraph, i.e. I am detecting the preamble of a receive

AW: USRP, GPIO toggling and Gnuradio

eriod... Von: Dobler, Anton Gesendet: Freitag, 10. September 2021 17:54 An: Marcus D. Leech; discuss-gnuradio@gnu.org Betreff: AW: USRP, GPIO toggling and Gnuradio I am extracting the package rate of a receive signal using a rather complex GRC flowgraph, i.e. I am detectin

AW: USRP, GPIO toggling and Gnuradio

radio im Auftrag von Marcus D. Leech Gesendet: Freitag, 10. September 2021 17:36 An: discuss-gnuradio@gnu.org Betreff: Re: USRP, GPIO toggling and Gnuradio On 2021-09-10 10:18 a.m., Dobler, Anton wrote: Dear all, I am currently trying to write an OOT block to switch a GPIO pin high or low depe

AW: USRP, GPIO toggling and Gnuradio

PS: Forgot to mention that I am using a USRP N310 and its front panel GPIO... Thank you for your help!? Von: Discuss-gnuradio im Auftrag von Dobler, Anton Gesendet: Freitag, 10. September 2021 16:18 An: discuss-gnuradio@gnu.org Betreff: USRP, GPIO toggling

USRP, GPIO toggling and Gnuradio

Dear all, I am currently trying to write an OOT block to switch a GPIO pin high or low depending on the input signal. So far it has worked with the configuration of the pins and I can also switch the pins according to the input signal in a relatively simple flowgraph consisting of a signal gene