Hi all,
I now have some success. One of my USRP was faulty.
My problem is now that my received file is not complete( the first 150 lines are missing approx)
I now have some success. One of my USRP was faulty.
My problem is now that my received file is not complete( the first 150 lines are missing approx)
From: Brian
Sent: 05/07/2017 07:47
To: address@hidden
Subject: FW: [Discuss-gnuradio] Fwd: USRP Packet Decoder and Encoder
Having tried the several options from Derek and Mojtaba find myself lost still.
To summarize I am trying to send a file, whether that be complex (Jpeg) or simple (txt) through a pair of USRP.
To start with I created a single flow graph with bit conversion encoding and modulation, this works. I then used the same blocks but added the USRP source/sink to and this does not.
The symptom is a received file of 0byte size coupled with no output from the decoder.
I can therefore assume no valid signal is being received. I don't believe this to be any of the previous blocks as they did work.
Could it be a synch problem between the USRP or too noisy....and is there a way to test the USRP back to back not over the air.
To summarize I am trying to send a file, whether that be complex (Jpeg) or simple (txt) through a pair of USRP.
To start with I created a single flow graph with bit conversion encoding and modulation, this works. I then used the same blocks but added the USRP source/sink to and this does not.
The symptom is a received file of 0byte size coupled with no output from the decoder.
I can therefore assume no valid signal is being received. I don't believe this to be any of the previous blocks as they did work.
Could it be a synch problem between the USRP or too noisy....and is there a way to test the USRP back to back not over the air.
From: Brian
Sent: 04/07/2017 19:33
To: Mojtaba Mansour Abadi
Subject: RE: [Discuss-gnuradio] Fwd: USRP Packet Decoder and Encoder
I have tried both options unsuccessfully........ I will add them to my combined flow and check there.
From: Mojtaba Mansour Abadi
Sent: 04/07/2017 19:21
To: address@hidden
Subject: Re: [Discuss-gnuradio] Fwd: USRP Packet Decoder and Encoder
If you have access to the examples available in GNURadio package, please check:
\examples\digital\packet
Or
\example\digital\demod
The parameters are straight forward though.
Samples Per Symbol for your case is 2.
Filter Rollof Factor of 0.35 is fine.
Prototype Filter Size of 44 or 45 does the job.
Loop Bandwidth is the famous constant of 2*pi/100.
I use these values and the flowgraph seems to be fine. I hope they do the same for you.
Cheers.
Sent from Mail for Windows 10
From: Brian
Sent: 04 July 2017 19:12
To: Mojtaba Mansour Abadi
Subject: RE: [Discuss-gnuradio] Fwd: USRP Packet Decoder and Encoder
Thanks
How do I configure the fll band edge
From: Mojtaba Mansour Abadi
Sent: 04/07/2017 18:53
To: dis
[The entire original message is not included.]