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  1. A Light Lunch: CableLabs Eyes Coherent Optics

    Coherent optics may be the solution that provides much needed relief in the bandwidth department. CableLabs announced last week that it has adapted the technology, which has been used in long-haul fiber networks for quite some time, for use in short-haul access  networks . The R&D consortium has demonstrated 2,048 Gbps using eight wavelengths of 256 Gbps each. "Future demand is not based on pure capacity, but the architectures that are coming up in the cable space," said Alberto Campos, CableLabs distinguished technologist. "As we looked at different alternatives, coherent technology came to mind because (it offers) high capacity on a per optical, per wavelength, perspective. It allows you to put many optical carriers in the same fiber." Specifically, with coherent technology, there are two dimensions of turning light, using amplitude and phase, as well as two polarizations. This allows more wavelengths in the spectrum compared to other technologies and, therefore, more capacity in a fiber. In the long-haul environment, distances of more than 3000 km come into play. Fiber of that length needs a lot of compensation for distortion and noise. The result is a complex, expensive implementation. The access network, however, involves tens of kilometers rather than thousands, which means that the amount of compensation necessary is significantly reduced. The result is a simpler, lower cost implementation, Campos said. "There (also) are economies of scale in the access portion of the network …. You need more optical links (than in backbone) …. One more driver to lower cost is in the access network, there is the luxury of implementing robust technology, (which) facilitates interoperability," Campos said, noting that simplicity equals interoperability, while complexity hinders it. The process will now transition to R&D and specification development. Campos said he anticipates that a working group will be launched in the May/June timeframe. The dispersion and linear distortion in long-haul can be corrected with signal processing, but covering 3000 km means a "significant" amount of processing and a chip large enough to accommodate it, Campos said. "When you are (only) dealing with 30-40 km, the amount of dispersion compensation is negligible … so a smaller chip is needed." While CableLabs demonstrated a significant increase in capacity using coherent technology, Campos said the industry is still at the early stages. "We are future-proofing the network because of the amount of capacity that is available." He added that the coherent technology is not specifically for cable. It can be used in an access network for telcos and cellular companies as well, for example. "It is an enabler of transport." Further details are available in a CableLabs blog at http://www.cablelabs.com/future-proofing-cables-optical-access-network-coherent-story .

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    Tue, 14 Feb 2017

  2. Triveni to Focus on ATSC 3.0 at NAB

    At the 2017 NAB Show in Las Vegas in April, Triveni Digital will introduce a series of ATSC 3.0 starter kits designed to bring broadcasters up to ...

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    Fri, 10 Feb 2017

  3. Broadpeak Taking Streaming Tech to MWC

    At Mobile World Congress 2017 in Barcelona, Broadpeak will demonstrate technologies for streaming video over managed networks and OTT ...

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    Thu, 9 Feb 2017

  4. Interra to Show QC, Monitoring for Streaming Media

    At the 2017 NAB Show in Las Vegas in April, Interra Systems will showcase its approach to QC and monitoring for both live and on-demand ...

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    Wed, 8 Feb 2017

  1. Qwilt Takes the Cloud to the Edge

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    Tue, 7 Feb 2017

  2. A Deeper Dive into Comcast's OTT-as-a-Service

    Comcast Technology Solutions (NASDAQ:CMCSA) recently announced a direct-to-consumer (D2C) solution to help content providers build, launch and manage over-the-top (OTT) services. It is a turnkey offering ...

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    Tue, 7 Feb 2017

  3. Clearcable Taps Inca for Multiscreen Transcoding

    Clearcable Networks is using the Inca Networks 4430 high-density MPEG-4 HD transcoder to receive, transcode, process and monitor video in ...

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    Fri, 3 Feb 2017

  4. Genius Digital Eyes Offline Viewing

    Genius Digital has launched its Offline Viewing Analytics product. The analytics product is designed to help operators understand how their ...

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    Thu, 2 Feb 2017

  5. Cablevision Argentina Upgrades Backbone with Ciena

    Cablevisión Argentina is upgrading its network to 200G with Ciena's (NYSE:CIEN) converged packet optical solutions. The upgrade is intended ...

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    Wed, 18 Jan 2017

  6. Conklin IPTV Platform Tapped for MDU Deployment

    Real Choice TV has selected Conklin-Intracom's fs| cdn Anywhere platform to implement new TV Anywhere services for multi-dwelling unit ...

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    Fri, 13 Jan 2017

  7. VITEC Buys Stake in OTT/IPTV Software Company Anevia

    VITEC has decided to complement its existing work in advanced video encoding and streaming products by buying an 8% stake in Anevia, a provider of OTT and IPTV software.

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    Wed, 11 Jan 2017

  8. Comcast Courting OTT Providers

    Comcast (NASDAQ:CMCSA) Technology Solutions - whose portfolio includes the Video Platform for video management, publication, distribution ...

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    Fri, 6 Jan 2017

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