On Thu, Dec 12, 2024 at 6:53 PM Yan, Bixing (UT-EEMCS) <b....@utwente.nl> wrote:
> Hi, > > I am using USRP X440 to build a wireless communication prototype. The host > PC is equipped with i9-14900K and I am trying to use two transmit channels > and two receive channels of the USRP simultaneously. I feed two generated > signal to two channels by the USRP_sink block, and then I download the > received data from the USRP_source by file_sink blocks. The sample rate I > use is 150 MHz for each channel. > > However, I noticed that there are many "L" occurs when I run it. Even if I > reduce the sample rate to 30 MHz, I can still see the problem. But if I use > qt_gui_frequency_sink to visualize the received signal, it can hold up to > 150 MHz without any errors. > > I would like to ask the reason for this. What cause the "L" errors? Is it > about my ssd's writing speed is not high enough? > The "L"s are coming from the transmit side of things. if you feed a single Tx channel, does the issue persist? --M
