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26-28 MAY, 2013 - FIRST ANNUAL YOUTH ENTREPRENEURSHIP AND INNOVATORS CONFERENCE IN RUSSIA. STARTUP VILLAGE - one of the most ambitious start-up conferences in Russia, organized by Skolkovo in …

26-28 MAY, 2013 - FIRST ANNUAL YOUTH ENTREPRENEURSHIP AND INNOVATORS CONFERENCE IN RUSSIA. STARTUP VILLAGE - one of the most ambitious start-up conferences in Russia, organized by Skolkovo in cooperation with partners. The conference is the first this year and will be held annually.

SAD-COM is the first conference day's pitch session participant in the IT pavillion.

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  • 1. Digital terrestrial sound and multimedia broadcasting system for VHF frequency bands RAVIS (Real-time AudioVisual Information System) 27-28 May 2013
  • 2. • Increasing efficiency (more than 10 times) of VHF frequency range utilization • Higher quality of sound broadcasting, introduction of new multimedia services, including video • Implementation of local announcement system • Substantial decrease in energy consumption for broadcasting • Build-up of united system of mobile broadcasting preserving existing frequency arrangements • Build-up of local TV and radio broadcasting in small towns and rural areas, possibility of operation without multiplex • Integration of RAVIS into international telecommunications, interconnection with other radio broadcasting standards Characteristic features of RAVIS 227-28 May 2013
  • 3. Single radio channel RAVIS : 10 - 20 stereo sound programs or up to 8 multichannel (5.1) sound programs or video program and up to 6 stereo sound programs Increase of spectrum efficiency in VHF range 3 OIRT FM International FM RAVIS RAVIS 20 radio programs 50 radio programs 40 radio channels (200 kHz) 100 radio channels (200 kHz) 66 MHz 74 MHz 66 MHz 74 MHz 87.5 MHz 108 MHz 87.5 MHz 108 MHz 27-28 May 2013
  • 4. • For listeners: • High quality sound broadcasting (stereo and multichannel) • New multimedia services – video, text, additional data, EPG, etc. • Easy tuning on the station by station name, program genre and so on • For manufacturers: • Mass replacement of old analogue receivers • Upgrade of transmitters • General growth of the market potential • For broadcasters: • Decrease in power consumption and expansion of coverage area • Increased quantity and quality of programs and services • Adaptation to the needs of both big and small broadcasters • For regulatory authorities: • Increase in spectrum usage efficiency • Preservation of existing frequency allocations • Coordination in the framework of the internationally recognized system Advantages of RAVIS 427-28 May 2013
  • 5. • Several high quality stereo and multichannel sound programs • Video programs with multilingual sound accompaniment • Text messages • Electronic program guide • Static images, slide-show • Public warning in emergency situations, data transmission with enhanced reliability • Traffic information, local weather forecast, etc. • Data transmission (broadcast, multicast, unicast) New services in RAVIS 527-28 May 2013
  • 6. • Broadcasting for mobile users • Vehicular multimedia receivers • Household audio and video equipment • Smartphones, Tablet PCs • Navigators • Public warning systems • Systems for special applications Markets for RAVIS deployment 627-28 May 2013
  • 7. • VHF bands I and II (41-68/74 MHz and 87.5-108 MHz – FM broadcasting bands) • Radio channel bandwidth 100, 200 or 250 kHz (fits to current frequency arrangements) • Capacity – 80-900 kbps • Stable reception in moving vehicles in urban districts with compact planning, in woody and mountainous areas, in water areas • Operation in multipath environment, absence of line-of- site transmitting antenna RAVIS general parameters 727-28 May 2013
  • 8. 8 Standardization of RAVIS • Russian Federation national standard GOST R 54309-2011 “Realtime audiovisual information system (RAVIS). Framing structure, channel coding and modulating for digital terrestrial narrowband broadcasting system for the VHF band. Technical specification” • Report ITU-R BT.2049-4 “Broadcasting of multimedia and data applications for mobile reception” (10/2010) • Report ITU-R BS.2214 “Planning parameters for terrestrial digital sound broadcasting systems in VHF bands” (05/2011) • ECC Report 117 “Managing the Transition to Digital Sound Broadcasting in the Frequency Bands below 80 MHz” (09/2010) • ECC Report 141 “Future Possibilities for the Digitalisation of Band II (87.5-108 MHz)” (05/2010), Technical supplement (04/2012) • ECC Report 177 “Possibilities for Future Terrestrial Delivery of Audio Broadcasting Services” (04/2012) 27-28 May 2013
  • 9. RAVIS hardware Transmission hardware kit: video encoder, audio encoder, warning system encoder, multiplexer, modulator 9 Receivers Power amplifiers 100 W and 500 W 27-28 May 2013
  • 10. 10 RAVIS signal parameters Parameter Value Modulation OFDM FEC rate (MSC channel) 1/2, 2/3, 3/4 Modulation of carriers (MSC channel) QPSK, 16-QAM, 64-QAM Radio channel bandwidth [kHz] 100 200 250 Data bitrate (MSC channel only) [kbps] 80 - 350 160 - 710 200 - 900 Number of carriers 215 439 553 Number of data carriers 196 400 504 Distance between edge carriers [kHz] 95,1 194,7 245,3 Carrier spacing [Hz] 4000/9 = 444 + 4/9 Duration of OFDM symbol useful part [μs] 2250 Duration of guard interval [μs] 281,25 (1/8) Duration of OFDM symbol [μs] 2531,25 Duration of OFDM frame [ms] 103,8 (41 symbol) 27-28 May 2013
  • 11. Field tests of RAVIS broadcasting in Moscow and Sochi 11 16-QAM 27-28 May 2013
  • 12. Research & Development Company SAD-COM Ltd. 24A, 7 Parkovaya str., 105264, Moscow, Russian Federation Tel.: +7 495 7481863 E-mail: dvp@ravis-radio.ru 1227-28 May 2013