Current broadband services over cable TV are based on the Data Over Cable Service Interface Specification (DOCSIS). This requires an upgraded cable network to support two-way interactive data handling together with an active cable modem at the consumer end, which can, at most, only provide asymmetric connectivity. Project coordinator @Home, former Essent Kabelcom, the cable TV supplier for much of The Netherlands, worked closely with two of its suppliers to develop the technology required. “We have a long relationship with both Teleste in Finland and Tratec Telecom in the Netherlands and so we brainstormed the idea to them,” explains Jelle Cnossen of @Home.
Higher speeds can be provided over phone lines using 56 MB/s VDSL technology- but this is limited to short distances from exchanges. The VIRTUAL FIBRE project set out to boost Internet speeds over the existing copper-based coaxial TV cable connections into the house. The resulting technology offers speeds up to 10 times that possible with existing cable TV Internet connection. Moreover, it provides Ethernet local area network (LAN) connectivity with no need for a consumer-side modem; users simply plug their personal computers (PC’s) into a standard connector on the wall. And, there is no active component; the Ethernet connection is free from interruptions.
A pilot trial in the Dutch town of Boxmeer demonstrated the success of the Ethernet-to-the-home (EttH) approach. Now, all 28,000 local residents have symmetrical access to the Internet at 10 MB/s, with local businesses able to obtain 50 MB/s symmetrical data connectivity. The technology has subsequently been developed to provide 100 MB/s connectivity and has already been sold to South Korea, demonstrating the global market for such an approach.
Pulling partners together
“This was the first time that we had been involved in a EUREKA project,” explains Esko Myllyla of Teleste, the Finnish project partner responsible for much of the technical work. “EUREKA labelling was not absolutely necessary for us but was important in the eyes of our local public funding authorities. Moreover, the EUREKA label helped pull the three parties in this project together more strongly – that was the key benefit. We all realised that we were not developing things each on our own behalf but rather we were developing something together.”
Sally Horspool | alfa
Quantum Technology for Advanced Imaging – QUILT
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24.04.2018 | Carnegie Mellon University
At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
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Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
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