Internal CRC presentation about Mobile Multimedia Broadcasting team projects. Mostly based on www.slideshare.net/fralef and www.slideshare.net/roykilo presentations.

1. CRC
March 8, 2012
Open Broadcasting
Platforms
Pascal Charest
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2. Background:
Mobile Multimedia Broadcasting
Projects
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3. New Applications for Radio
Radio Technologies (AM, FM, DAB, ..)
=
Mobile
Goal : explore, demonstrate, innovate, ...
Mobile multimedia applications
Methodology: Prototypes (not products)
integration of system building blocks
re-use, remix, tweak, develop, ... buy
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4. Problematic
Commercial equipment and mobile handsets
NOT optimal for playing around (R&D)
- Closed, expensive, NDAs, ...
- MNOs (used to?) control handsets functionality
- Can’t easily modify functionality
- ...
Instead: Generic HW + Free/Libre OSS
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5. Software + Generic HW
CRC-mmbTools
DAB Transmitter OpenBTS
GSM Base Station
USRP Oscilloscope
???
Test System
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6. The Software Advantage
●
Can be changed, fixed, enhanced... easily
●
Can be copied at almost no cost
●
Can be distributed at almost no cost
●
Functionality can be enhanced after HW has been
produced, distributed: upgrades. ...
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7. Defining Free Software
●
As in free beer or as in free speech?
●
You are free to do what you want with it... once
you've paid for it !
●
Executable software available at no cost with limited
or full functionality: freeware, shareware
●
Free open source: license limits redistribution
●
Free libre open open source (FLOSS): copyleft (GPL)
●
Free open source BSD: free to do anything
●
WARNING: Software Patents = Legal Gray Zone
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8. CRC-mmbTools Timeline
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2000-2006: Mains tools developed
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2006: IBC demo DAB, DRM, DMB (USRP)
●
2007: First live CD released (freeware)
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2008: GPL CRC-DABMUX, CRC-DABMOD, …
●
2009: Demo EBU Village IBC, Android DAB
●
2010: NAB demo Live CD FM tx + FM hybrid app
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2011: FM-RDS Android Library, FM TwoO
●
2012: NAB???
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9. End-to-end DAB tool chain
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10. Transmitter and receiver
TRANSMITTER “Open” Receivers
since 2007
Integrated GNU/Linux Open
Source DAB transmitter
with USRP since 2006
2007 2008
GNU/Linux Android 1.6
FreeRunner Google G1
USB DAB Rx DAB over Wifi
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11. CRC-mmbTools Live CD
●
Free
●
“One-click” transmitter
●
CRC-DABMUX
●
CRC-DABMOD
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Pre-encoded content:
DAB, DAB+, DLS,
MOT, Slideshow,
DMB, …
●
Installable
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12. Testing in the “Cloud” CRC Web Appliances
●
First DAB+ encoder
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Upload .mp3
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Get .ETI
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Playback with CRC-
EtiStreamer
●
Reference encoder,
compliance, ...
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13. Building Communities
Around OSS
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14. RAI + Rai Way: TPEG
CRC Openmokast
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15. Total Broadcast Consultants
●
Experimental license
●
Since April 2012
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Dedicated lines, wireless links
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11 DAB and DAB+ services
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Internet mp3 audio streams
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Barix Exstreamers (mp3 decoding)
●
CRC-DABPLUS
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CRC-DABMUX
●
Farsite ETI Interface
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UBS Modulator
●
SFN, 2 transmitters: 28dBw, 15dBw
Coverage in Dublin, Ireland
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16. Workshop EBU Radio Week 2011
10 DAB multiplexes in a room!
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17. Workshop EBU Radio Week 2012
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18. DAB+ during the EBU Radio Week 2012
●
Experimental license
●
100W ERP
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9 DAB+ services
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Internet mp3 audio streams
●
20.000 Euros
Src: opendigitalradio.org Coverage at EBU, Geneva
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19. Kanal Plus – EBU Radio Summit 2012
Src: http://www.slideshare.net/UlrBri/120215-brinck-kanalplusdenmark
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20. FM Projects
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21. FM Project Objectives
Demonstrate new potential uses for FM-RDS
 Public Alerting to mobile devices
 Hybrid Radio: FM Audio + Mobile Internet Enhancements
 Radio Tagging
Why?
 FM already inside many smart phones
 New devices available: iPod Nano 5 (2009) ... iPhone ?
 Rumours of an FM API in Android 2.2 (May 2010)
Challenges
 US Mobile Network Operators disable FM function in handsets
 Closed APIs
 Reverse engineering
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22. Early mobile developments (2002):
Reaching Portable Devices
DAB
Radio
Signal
- iPaq + Wifi
- Java Widget
CRC Concept: Broadcast Hotspot - DAB Audio streaming
Linux embedded
CRC Receiver Manager Software
Receives DAB, forward over Wifi
PC-104, Geode
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23. FM-RDS Tx/Rx Test Platform
 Tx/Rx platform to
experiment with FM-RDS
 Hardware (generic and cheap)
 Laptop
 USRP with basic TX and basic RX
daughter boards
 Software
 GNURadio version 3.2.2
 GNURadio Companion 3.2.2
 gr-rds (to enable RDS)
 Built from free software
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24. FM-RDS Tx/Rx Software
 GNURadio FM-RDS applications
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25. PC Development
Platform
 ODA Rx on G1
Rx
PC
USRP
Tx FM
Rx FM
G1
Tx
USRP
PC
WiFi
G1
USRP
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26. FM/RDS Library on Windows Mobile
 2009-2010
App. for HTC Touch Pro
 Windows Mobile
(closed platform)
 FM-RDS chip
(no official API)
 Developed RDS decoder
(rdslib)
 Presented at NAB 2010
Copyright: HTC
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27. FM/RDS Library ported to Android
 2010 (After NAB)
App. for T-Mobile G1
 Android
(open platform)
 FM-RDS chip
(no! → RDS over WiFi)
 Developed FM-RDS app.
(Support for ODAs)
(Using USRP + PC)
 Ready for Android handset Copyright: HTC
with FM-RDS chip.
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28. Low Level Access to FM on Samsung Galaxy S
 Q4 2010
New phone:
 Android
(Great! It's the platform we have
selected earlier)
 FM-RDS chip
(yes! But no API)
 Developed an API
(Silicon Labs fmsi4709)
 Enhanced the app
RDS Audio Volume Region Copyright: Samsung
GUI Seek
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29. CRC FM TwoO App
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30. FM TwoO Overview
 Released in February 2011 on Android Market
 Pronounce: Two "O", like in Web 2.0
 Samsung Galaxy S
 Demo/Testing Application
 First FM App on Android Market
 +50k downloads to date
 Test mode (RDS via Wifi)
 RT+ Decoding
 RadioDNS: RadioVIS/EPG
 Distribute free library available
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31. FM TwoO vs Samsung Stock FM App
src: mmbtools.crc.ca
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32. FM TwoO Compatibility
 Galaxy S Then: YES
 Galaxy TAB: NO
 Nexus S: NO
 5 Galaxy S US models: NO?
 Galaxy S 2: root
 Galaxy S Now: ROOT
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33. FM Driver Disabled
•Since new firmware release May 2011
•New permissions to FM radio driver
•Phone must be rooted for full TwoO functionality
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34. FM TwoO UI
 RadioVIS
 A RadioDNS-based application
From FM-RDS
- RT/RT+
- PS
- PI
- Audio
Hybrid Radio
From Internet
- Image
- Text
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35. Our Android Projects
Openmokast FM TwoO
2010
2008 Android 2.2
Android 1.6 Samsung Galaxy S
Google G1 First FM RDS App on the Android Market
DAB/RDS over Wifi FM RDS Open Data Applications
CELT audio decoder Hybrid Radio
MOT Slideshow decoder Public Alerting
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36. Software Projects Overview
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38. Thanks - The MMB Team !
Special thanks to François Lefebvre and Roy Kyrillos
for their great support in preparing this presentation.
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