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List: gnuradio-discuss
Subject: Re: [Discuss-gnuradio] Regarding correlate access code-tag block
From: Maitry Raval <maitry.raval () azistaaerospace ! com>
Date: 2019-01-23 9:44:29
Message-ID: 905477978.371845.1548235949052.JavaMail.zimbra () azistaaerospace ! com
[Download RAW message or body]
Hello,
I have updated Ubuntu version to 18.10 in order to install GNU radio version 3.7.12. \
(As GNU radio version 3.7.12 have bug fixes for additive CCSDS de scrambler, as per \
said by gr-satellites). but the different problem arises, when I have simulate(run) \
the same GRC flow graph file (the one with correlate access tag stream and fixed \
length packet tagger). I have attached the GRC file for your reference.As this file \
is run with generate option to NO GUI option, once I press the run button in GRC, it \
is not continuously run the flow graph and didnot get the output. can you please tell \
me, when am i dong wrong.
With Best Regards,
Maitry Raval,
----- Original Message -----
From: "Maitry Raval" <maitry.raval@azistaaerospace.com>
To: "Cinaed Simson" <cinaed.simson@gmail.com>
Cc: "discuss-gnuradio" <discuss-gnuradio@gnu.org>
Sent: Friday, January 18, 2019 10:11:18 AM
Subject: Re: [Discuss-gnuradio] Regarding correlate access code-tag block
Thanks for your guidance and support.
I will try to make flow graph with the blocks as per examples given by you.
With Best Regards,
Maitry Raval,
----- Original Message -----
From: "Cinaed Simson" <cinaed.simson@gmail.com>
To: "Maitry Raval" <maitry.raval@azistaaerospace.com>
Cc: "discuss-gnuradio" <discuss-gnuradio@gnu.org>
Sent: Tuesday, January 15, 2019 10:25:52 AM
Subject: Re: [Discuss-gnuradio] Regarding correlate access code-tag block
Actually, with the Default Header Format file, and the Protocol
Formatter, use correlation-access tagged block was a piece of cake.
Also, here's an example of bspk using constellations - if you haven't
found already.
-- Cinaed
On 1/14/19 12:39 PM, Cinaed Simson wrote:
> As you may have already discovered, I was wrong about unpacking bits for
> fec.
>
> Actually, I have no idea on how I'm getting the results I'm getting
> using my modifications of your flowgraph - those depreciated blocks
> definitely have strange problems. If I insert the unpack k=8 block as
> required for fec the flowgraph doesn't work.
>
> I ran into a problem testing fec - I modified your sources and I didn't
> have enough frame bits. So I set the frame bits to exactly what I need.
>
> And I can't get a simple correlation access tagged test working - even
> with a tag gate. The only way it works is if remove the access code -
> which defeats the purpose.
>
> So I'm go to have to evolve and get the protocol formatter working.
>
> Also, you don't have to use the rx and tx packet blocks - you can use
> the replacements for the PSK mod/demod blocks - the constellation
> mod/demod blocks - you probably shouldn't use any depreciated blocks.
>
> -- Cinaed
>
>
> On 1/10/19 10:01 PM, Maitry Raval wrote:
> > Hello,
> >
> > Ok, One more query, what is the purpose of the block unpack k=1 bit at output of \
> > PSK demod block, because the meaning of unpack k=1 means byte to byte conversion, \
> > right?
> > With Best Regards,
> > Maitry Raval,
> >
> > ----- Original Message -----
> > From: "Cinaed Simson" <cinaed.simson@gmail.com>
> > To: "Maitry Raval" <maitry.raval@azistaaerospace.com>
> > Cc: "discuss-gnuradio" <discuss-gnuradio@gnu.org>
> > Sent: Friday, January 11, 2019 2:11:54 AM
> > Subject: Re: [Discuss-gnuradio] Regarding correlate access code-tag block
> >
> > On 1/10/19 2:47 AM, Maitry Raval wrote:
> > > Hello,
> > >
> > > Thanks for your time!
> > >
> > > It works completely fine, now I understand that we have to give tagged stream \
> > > at the input of encoder.
> >
> > Sorry, I didn't mean to imply you needed the stream to tagged stream
> > block to make it work.
> >
> > I just put in at the beginning so I could use the tag debug as a brute
> > force search to find out what was blocking the flow.
> >
> > There are two sequential tag blocks - the correlate correlate access
> > code-tag from gnuradio and a block from gr-satellites - I would guess
> > that is all you need.
> >
> > Select "pass thru" on the stream to tagged stream block - it should
> > still work.
> >
> > -- Cinaed
> >
> >
> > >
> > >
> > > With Best Regards,
> > > Maitry Raval,
> > > R& D engineer|Azista Industries Pvt Ltd| 079-40605800|www.azistaaerospace.com
> > >
> > > ----- Original Message -----
> > > From: "Cinaed Simson" <cinaed.simson@gmail.com>
> > > To: "discuss-gnuradio" <discuss-gnuradio@gnu.org>
> > > Cc: "Maitry Raval" <maitry.raval@azistaaerospace.com>
> > > Sent: Thursday, January 10, 2019 1:21:34 PM
> > > Subject: Re: [Discuss-gnuradio] Regarding correlate access code-tag block
> > >
> > > Hi Mailry - I was able to get it run.
> > >
> > > I used the "correlate access" block from gnuradio - my installation of
> > > gnuradio didn't like the block in your flowgraph.
> > >
> > > And then I had to install the python module "construct" in order to get
> > > the flowgraph to run.
> > >
> > > In order to get the flowchart to work - at least in the sense of filling
> > > up the output.txt file - I added a "Stream to Tagged Stream" block and
> > > define a consist tag to get the Tag Debug block to work.
> > >
> > > Also, I had to remove the "unpack" block before the PSK modulation,
> > > added a "Unpack K=1" block just after the PSK demodulation - and I set
> > > "Generate Options" to "No Gui" in the Options block.
> > >
> > > -- Cinaed
> > >
> > >
> > >
> > > On 1/8/19 12:40 AM, Maitry Raval wrote:
> > > > Hello,
> > > > thanks for your guidance.
> > > > I have also attached the grc file, input/output files and python file for \
> > > > your reference. after adding tag debug, still didn't get any output. I have \
> > > > also tried this same in ubuntu 18.04 with GNU radio 3.7.11 version. actually \
> > > > because these psk blocks are deprecated, I have tried it with dpsk mod, demod \
> > > > block. But as I wanted to do continuous transmission, I didn't find replaced \
> > > > block for correlate access code-tag block, and the cusom block from \
> > > > gr-satellites are for extracting syncbits. I have also tried with simple \
> > > > flow graph by just sream muxing 2 files one with sync bits and other one is \
> > > > payload file and give that output to correlate access code-tag block, but \
> > > > that also didn't work.
> > > > It would be grateful, If you guide me on this. I just want to make that sync \
> > > > bits searching and extracting from payload and receive only payload at the \
> > > > output.
> > > >
> > > > With Best Regards,
> > > > Maitry Raval,
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Cinaed Simson" <cinaed.simson@gmail.com>
> > > > To: "discuss-gnuradio" <discuss-gnuradio@gnu.org>
> > > > Sent: Tuesday, January 8, 2019 1:47:56 PM
> > > > Subject: Re: [Discuss-gnuradio] Regarding correlate access code-tag block
> > > >
> > > > I broke down and looked at the image.
> > > >
> > > > Note, PSK Demod, Correlate Access Code - Tag, Packet Encoder, and Packet
> > > > Decoder have been depreciated.
> > > >
> > > > And they're usually depreciated because they have problems - and they
> > > > are usually replaced with different blocks which work better and are
> > > > typically more general.
> > > >
> > > > The tutorials are good place to start looking for the replacements.
> > > >
> > > > -- Cinaed
> > > >
> > > >
> > > > On 1/7/19 11:22 PM, Thomas Lavarenne wrote:
> > > > > Oh, it is "File Sink" not "Tagged file sink", didn't see sorry.
> > > > >
> > > > > Le mar. 8 janv. 2019 Ã 08:20, Thomas Lavarenne
> > > > > <thomas.lavarenne@gmail.com <mailto:thomas.lavarenne@gmail.com>> a écrit \
> > > > > :
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > But, the issue is that correlate access code-tag block is not
> > > > > working and producing tags, so that my output file will come
> > > > > blank. as I am certain that at the output of FEC extended
> > > > > decoder, both the sync bits and payload is available which I
> > > > > have seen by attaching file sink at the output of FEC extended
> > > > > decoder.
> > > > >
> > > > >
> > > > > There is a block "Tag Debug" to see if the tag is generated behind
> > > > > "correlate access code - tag block".
> > > > >
> > > > > On the other hand, the documentation of "Tagged File sink" indicate
> > > > > that the block need the keyword "burst" (with value: True) to
> > > > > trigger the saving of the data.
> > > > >
> > > > > Best regards,
> > > > >
> > > > > Thomas
> > > > >
> > > > > _______________________________________________
> > > > >
> > > > > Discuss-gnuradio mailing list
> > > > > Discuss-gnuradio@gnu.org <mailto:Discuss-gnuradio@gnu.org>
> > > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > Discuss-gnuradio mailing list
> > > > > Discuss-gnuradio@gnu.org
> > > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > > > >
> > > >
> > > >
> > > > _______________________________________________
> > > > Discuss-gnuradio mailing list
> > > > Discuss-gnuradio@gnu.org
> > > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> > > >
> > > >
> > > > _______________________________________________
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> > > >
> > > .
> > >
> >
>
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