5/17/2005 - RadioScape, the world leader in Software Defined Digital Radio solutions, will discuss the results of its recent DMB (Digital Multimedia Broadcasting) field trials at the GSPx Mobile Conference in Eindhoven on May 17 to 18, 2005. The results of the trials in Cambridge, UK show that the design of DMB networks, for the carriage of video and multimedia services based on state-of-the-art codes, can proceed using essentially the same rules as for current DAB audio networks.
“DMB is viewed by many as the next logical step in the evolution of DAB,” said Dr. Les Sabel, RadioScape’s VP of Technology, who will be presenting the paper. “More importantly, it could also represent the next step in the evolution of mobile phones delivering the vision of video and data on the move that 3G promised but cannot deliver in a cost effective and efficient manner. A one-to-many broadcast technology, such as DMB, provides a broadband pipe of multimedia services that the one-to-one approach of 3G can only provide in small numbers and expensively.”
During his paper, Les Sabel will also raise concerns about the viability of an alternative to DMB called DVB-H. This is a modification of Digital Video Broadcast – Terrestrial (DVB-T) for handheld devices but has spectrum allocation issues as many countries are currently using these frequencies for analogue television. DMB, on the other hand, is based on proven DAB technology with spectrum, transmission towers and capacity already available for it in most countries.
Current discussions indicate that for DVB-H to work effectively in mobile and indoor environments it will need to use transmission parameters similar to DAB. This will eliminate any real capacity advantages and still leave DVB-H with the issue of transmission power requirements due to its larger bandwidth. “Our field trials show that good DMB reception can be achieved with existing DAB transmitters that only use low amounts of power to cover a large footprint,” he explained. “I have yet to see any comparative, quantitative evidence for DVB-H but, recent discussions indicate that for DVB-H to achieve the same footprint, network providers will typically require a five times greater density of transmitters. This will make DVB-H very expensive to establish and run -- let alone the possibility of public concerns over yet more transmission towers. DMB clearly offers a much better, more cost effective solution for operators that can be implemented now as it based on proven DAB technology as can be evidenced by DMB pioneers in countries such as Korea and China where trial systems are already up and running.”
Further details on the DMB trial results can be found on the RadioScape website.
RadioScape Ltd. is the world’s only developer of end-to-end digital audio broadcasting solutions giving RadioScape unmatched systems knowledge and enabling it to ensure that customers receive the highest levels of quality, robustness and reception at all stages. Its Digital Radio broadcast suite is used extensively throughout the world including the largest DAB installation to date -- the UK’s commercial DAB network.
Its innovative “Software Defined” approach has made it a leader in DAB and DMB technology with its DAB receiver modules being extensively used by many of the world’s leading consumer electronics manufacturers. The company has announced that it is working on DRM capability that will result in true, multi-standard, digital radio receivers.
Founded in 1996, RadioScape's investors include Atlas Venture, Royal Bank Ventures, Scottish Equity Partners, JAFCO, Texas Instruments, Yasuda Enterprise Development, iGlobe Partners, Psion and NTL. RadioScape is headquartered in London, England with offices in Singapore and Hong Kong. For more information, please visit www.radioscape.com
RadioScape is a registered trademark of RadioScape Limited.
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