fm rds tmc

FM RDS / TMC Bastian'Bloessl' <bloessl@ccs/labs.org>' ' - PowerPoint PPT Presentation

Apr 09, 2023 •365 likes •552 views

FM RDS / TMC Bastian'Bloessl' <bloessl@ccs/labs.org>' ' FOSDEM'2015''SDR'DevRoom''February'1,'2015' About Me ! PhD'Student'@'University'of'Paderborn' ! Distributed'Embedded'Systems'Group' ! Work'on'several'OOT'Modules' !

  1. FM RDS / TMC Bastian'Bloessl' <bloessl@ccs/labs.org>' ' FOSDEM'2015'▪'SDR'DevRoom'▪'February'1,'2015'

  2. About Me ! PhD'Student'@'University'of'Paderborn' ! Distributed'Embedded'Systems'Group' ! Work'on'several'OOT'Modules' ! 'WiFi,'ZigBee,'RDS,'WeatherSonde' DF1BBL ' 2'

  3. Radio Data System 3'

  4. Radio Data System Pilot" L"+"R" L"–"R" RDS" 19kHz' 0kHz' 38kHz' 57kHz' 4'

  5. Radio Data System ! Released'1984' ! Last'update'2014' ! Digital'subchannel'on'FM'broadcasts' ! Station'name' ! Alternate'frequencies' ! Time' ! Traffic'program'/'traffic'announcement' 5'

  6. Encoding ! Manchester'encoded' ! 1187.5'bit/s' Group'104'bits' CRC' CRC' CRC' CRC' Block' Block' Block' Block' 16'bits' 10'bits' 6'

  7. Why RDS? ! Simple'protocol' ! Cheap'hardware' ! RTL/SDR'+'2EUR'antenna' ! Ubiquitous' ! Extension'of'FM'receiver' 7'

  8. GR-RDS ! Open'Source' ! Easy'to'install' ! Tested'with'RTL/SDR,'USRPs,'HackRF' ! Receive'and'transmit'side' ! http://www.github.com/bastibl/gr/rds/' 8'

  9. GR-RDS 9'

  10. 10'

  11. 11'

  12. TMC ! Traffic'Message'Channel' ! RDS'group'type'for'traffic'information' source:'http://commons.wikimedia.org/wiki/File%3AMobiles_Navigationsgeraet_Navigon_im_Einsatz.JPG' 12'

  13. TMC Encoding ! National'location'table' ! #266'Berlin,'#11023'Paderborn'Center' ! 61456'locations'for'Germany' ! Alert/C'for'event'types' ! #1340'swarm'of'insects' ! #2022'public'transport'strike' ! #1456'bull'fight' 13'

  14. 14'

  15. Canard?'Hacked?' ' Navigation'system' reports'terrorist' attack'in'Bavaria' Source:'http://www.bild.de/' 15'

  16. Disclaimer ! Please'be'careful'with' ! What'you'send' ! On'which'frequency'you'send'it' ! How'much'power'you'use' ! You'never'know' ! Who'receives'it' ! If'it'triggers'automated'actions' 16'

  17. Conclusion ! Try'it' ! Improve'it' ! Build'some' stuff'with'it' 17'

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