Difference between revisions of "Talk:Simple DVB with Gstreamer and GNU Radio"

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(New page: == Logbook == === 2010.08.07 === * Created a full duplex transceiver version of the GMSK TX+RX so that I could run both transmitter and receiver using only one USRP and computer. See bl...)
 
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== Logbook ==
 
== Logbook ==
  
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=== 2010.07.24 ===
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* Building on the success of transferring data between GNU Radio and multimon using a named pipe, I decided to try the same trick to send real time video from Gstreamer to GNU Radio. It worked!
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=== 2010.07.25 ===
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* Implemented a simple video transmission simulator by sending the video through a GMSK modulator, adding noise, then GMSK demodulator. See [http://www.youtube.com/watch?v=XtlyNlRAHGM recorded video].
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=== 2010.07.26 ===
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* Although the MPEG-TS muxer available in Gstreamer can not deliver CBR, sending the GMSK modulated video to the USRP didn't seem to be a problem.
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* Having only one USRP I didn't try to receive and decode the video.
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=== 2010.07.27 ===
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* Successful on the air tests of the DVB setup using a videotestsrc
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* Location: OZ7SAT
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=== 2010.07.28 ===
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* Repeated on the air tests at OZ7SAT (to be sure that it wasn't just some sort of random luck)
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* Video test source: http://www.youtube.com/watch?v=2VUZ7H60F68
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* [[Logitech Webcam Pro 9000]]: http://www.youtube.com/watch?v=RzIe_IWGvmA
  
 
=== 2010.08.07 ===
 
=== 2010.08.07 ===
  
* Created a full duplex transceiver version of the GMSK TX+RX so that I could run both transmitter and receiver using only one USRP and computer. See blog post TBC
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* At Høm for the weekend and only brought one USRP and one laptop
 +
* Created a full duplex transceiver version of the GMSK TX+RX so that I could run both transmitter and receiver using only one USRP and computer: http://www.youtube.com/watch?v=dJg2zAd3kRY
 
* The transceiver was running stable for more than 4.5 hours, see [http://picasaweb.google.com/lh/photo/uIs2b_vUrpryrq3m5i5zqQ?feat=directlink last screenshot].
 
* The transceiver was running stable for more than 4.5 hours, see [http://picasaweb.google.com/lh/photo/uIs2b_vUrpryrq3m5i5zqQ?feat=directlink last screenshot].
 
* With this setup, the video appeared to be more choppy than with the two-computer setup.
 
* With this setup, the video appeared to be more choppy than with the two-computer setup.

Revision as of 20:18, 7 August 2010

Logbook

2010.07.24

  • Building on the success of transferring data between GNU Radio and multimon using a named pipe, I decided to try the same trick to send real time video from Gstreamer to GNU Radio. It worked!


2010.07.25

  • Implemented a simple video transmission simulator by sending the video through a GMSK modulator, adding noise, then GMSK demodulator. See recorded video.

2010.07.26

  • Although the MPEG-TS muxer available in Gstreamer can not deliver CBR, sending the GMSK modulated video to the USRP didn't seem to be a problem.
  • Having only one USRP I didn't try to receive and decode the video.

2010.07.27

  • Successful on the air tests of the DVB setup using a videotestsrc
  • Location: OZ7SAT

2010.07.28

2010.08.07

  • At Høm for the weekend and only brought one USRP and one laptop
  • Created a full duplex transceiver version of the GMSK TX+RX so that I could run both transmitter and receiver using only one USRP and computer: http://www.youtube.com/watch?v=dJg2zAd3kRY
  • The transceiver was running stable for more than 4.5 hours, see last screenshot.
  • With this setup, the video appeared to be more choppy than with the two-computer setup.