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Open techniques for Digital Radio Broadcasting

Background Open digital broadcasting techniques based on software defined radio. Digital radio transmission and development must also become democratized for experimenters and small broadcasters. Opendigitalradio.org wiki is about creating a community for documenting and exchanging experimentations and gather information about existing projects. Please read Introduction for more information. Opendigitalradio is a non-profit association based in Switzerland (page in french), offering also a broadcast infrastructure for temporary radio stations. News: A free/open DAB+ encoder is born: https://github.com/piratfm/fdk-aac-dabplus congratulations Tipok ! The simplest and lowest cost DAB transmitter so far, check also the video New Single Frequency Network feature for DAB on CRC mmbTools free software !! CRC has put in GPL a new version of the crc-dabmod modulator including all modes ! Michael Feilen developed a DRM+ software defined receiver based on ultra low cost RTL-SDR USB sticks Some people have started to develop an open driver for the RTL2832u chip, making it the lowest cost open SDR platform ever seen. Live DAB+ test transmission in Geneva during the EBU Radio Week 2012 with 100W ERP "DAB+ for local/community radio" presentation for Unikom radios in Switzerland Older news

DAB/DAB+ transmission Introduction on DAB/DAB+ DAB/DAB+ encoding: MPEG Layer II or HE-AAC encoding, slideshow encoding DAB multiplexing: putting together DAB/DAB+/DMB programs DAB modulation: create the baseband COFDM modulation DAB hardware: software radio peripheral, filtering, amplification Real cases, examples Presentation and demonstration of the full open source DAB transmission solution at 2010 WorldDMB General Assembly in Belfast First licensed open dab transmission for Label Suisse Festival 17-19 September 2010 Lausanne. Demonstration of open source digital transmission chain at IBC, Stand 10.D21 (EBU), 10-14 September 2010 DAB scripts examples How to install CRC DAB+ transmission chain from scratch in Ubuntu 11.04 DAB+ script and infrastructure used for Kanal Plus ensemble in Denmark How to install latest version of gnuradio with CRC MMBtools live CD

Other digital systems, transmission and reception DRM/DRM+ Digital Radio Mondiale, digital radio system for AM bands (LW, MW and SW) and all VHF bands (FM band and others). FM RDS transmission (not really a digital system except RDS ;) DAB reception (Openmokast and others) Crazy techniques using a VGA card as radio peripheral Coverage planning

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