Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

HI Marcus, Even with a file source which I have tried earlier I don't see the hops where I want. I was trying to do a file transfer experiment first. So I switched to a simple experiment in which I atleast see the hops correctly. If you want I can add the details, grc files of the file transfer

Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

Hi! So, first step is to verify that if you used a file source instead of the USRP source, things work. If that works, move on to determining possible effects of the physical transmission. For that, I'd recommend you use your transmitter as you have it, and on the receiver side, start with a wate

Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

Hi Marcus, I am not using frequency aligning. I think your guess about "frequency offset" thing is possible. Since we are never transmitting on -187Khz but we do observe a signal over there. The received signal that we observe is just what is being transmitted. We are not applying any demodulati

Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

Correct me, but this is 400kS/s – that should really not max out anyone's system, unless the spread blocks are really terribly inefficient (I don't think they are); please check this, though! If I'm not mistaken, gr-spread doesn't tune the hardware or anything – it just creates a continuous phase

Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

I have had issues with scheduling transmissions at ~ 10 ms per hop and ending up with transmissions happening on the wrong frequencies. Usually it's one channel off. If you slow the system down does everything work properly? Also, are you pegging out any single core in your system? I have seen

Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

Dave, Thanks for replying. we are hopping every 80ms. ᐧ On Fri, Aug 26, 2016 at 12:32 PM, Dave NotTelling wrote: > Ajinkya, > > How fast are you hopping? I've had loads of issues with hopping > rapidly and not having the correct frequencies used. > > -Dave > > On Tue, Aug 23, 2016 at 7:1

Re: [Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

Ajinkya, How fast are you hopping? I've had loads of issues with hopping rapidly and not having the correct frequencies used. -Dave On Tue, Aug 23, 2016 at 7:16 PM, Ajinkya D Kadam wrote: > HI All, > > I am using gr-spread > module t

[Discuss-gnuradio] Transmit and Receive hopping Sequence in FHSS (using gr-spread module) mismtach

HI All, I am using gr-spread module to transmit a signal using FHSS. When I receive the FHSS signal, the received signal has a completely different hopping sequence as from the transmitted one. I am using USRP N210 for transmission and recepti