daughter board coherency on N310

2020-11-20 Thread Cameron Matson
Hello all, I'm trying to implement a MIMO receiver using the 4 RF chains of the N310. To test the timing of the system, at the transmitter I'm simply sending a short pulse from one transmit antenna of one USRP. At the receiver it looks like there is up to a ~20 ms delay/offset between the pairs o

Fan In of tagged and un-tagged stream.

2020-11-20 Thread Nicholas Long
Hi, I am looking for comments/thoughts/advice on how to combine (fan in) untagged and tagged streams. Basically my goal is to make a sample synchronous filter with adjustable taps, where the data to be filtered is a untagged stream that periodically has a tag flag saying "update taps" when this fl

Re: Fan In of tagged and un-tagged stream.

2020-11-20 Thread Jeff Long
If the taps need to be changed exactly at the tag, then I think you'll have to make your own version of the filter block you're using, adding handling for a "set_taps" tag. None of the filter blocks pay any attention to tags and a call to set_taps() would take effect "approximately" when you mean i

Re: Fan In of tagged and un-tagged stream.

2020-11-20 Thread Jeff Long
[back on mailing list] Ha, I don't think any question regarding tagging and filtering counts as "simplistic"! Good luck. On Fri, Nov 20, 2020 at 10:04 AM Nicholas Long wrote: > Yes, what you described in the first section is what I am planning, > > Looking at it more, my main concern was ensuri

Re: [USRP-users] daughter board coherency on N310

2020-11-20 Thread Rob Kossler
Hi Cameron, Yes, this is possible. I'm not too familiar with gnuradio but in the end you need to use a "timed start" to the receive streams. Rob On Fri, Nov 20, 2020 at 7:34 AM Cameron Matson via USRP-users < usrp-us...@lists.ettus.com> wrote: > Hello all, > > I'm trying to implement a MIMO rece

Re: [USRP-users] daughter board coherency on N310

2020-11-20 Thread Marcus D. Leech
On 11/20/2020 11:49 AM, Rob Kossler wrote: Hi Cameron, Yes, this is possible. I'm not too familiar with gnuradio but in the end you need to use a "timed start" to the receive streams. Rob On Fri, Nov 20, 2020 at 7:34 AM Cameron Matson via USRP-users mailto:usrp-us...@lists.ettus.com>> wrote:

Re: [USRP-users] Overrun on chan error 0 USRP e310 RFNoC

2020-11-20 Thread Marcus D Leech
There’s no way the fpga to ARM channel can support those data rates. Lower your sample rate to 5msps and try again. Sent from my iPhone > On Nov 20, 2020, at 10:02 PM, Ivan Zahartchuk via USRP-users > wrote: > >  > Hello, I want to launch two channels for receiving in parallel with usrp e3