Light Reading
Bell Labs claims new broadband speed record of 10 Gbit/s using traditional copper lines and XG-FAST technology.

Alcatel-Lucent Claims Copper Speed Record

Light Reading
News Wire Feed
Light Reading
7/9/2014
50%
50%

PARIS -- Bell Labs, the research arm of Alcatel-Lucent (Euronext Paris and NYSE: ALU), has set a new broadband speed record of 10 gigabits-per-second (Gbps) using traditional copper telephone lines and a prototype technology that demonstrates how existing copper access networks can be used to deliver 1Gbps symmetrical ultra-broadband access services.

Achieving 1 Gbps 'symmetrical' services – where bandwidth can be split to provide simultaneous upload and download speeds of 1 Gbps – is a major breakthrough for copper broadband. It will enable operators to provide Internet connection speeds that are indistinguishable from fiber-to-the-home services, a major business benefit in locations where it is not physically, economically or aesthetically viable to lay new fiber cables all the way into residences. Instead, fiber can be brought to the curbside, wall or basement of a building and the existing copper network used for the final few meters.

The Bell Labs tests used a prototype technology called XG-FAST. This is an extension of G.fast technology, a new broadband standard currently being finalized by the ITU. When it becomes commercially available in 2015, G.fast will use a frequency range for data transmission of 106 MHz, giving broadband speeds up to 500 Mbps over a distance of 100 meters. In contrast, XG-FAST uses an increased frequency range up to 500 MHz to achieve higher speeds but over shorter distances. Bell Labs achieved 1 Gbps symmetrical over 70 meters on a single copper pair. 10 Gbps was achieved over a distance of 30 meters by using two pairs of lines (a technique known as “bonding”). Both tests used standard copper cable provided by a European operator.

Marcus Weldon, President of Bell Labs: “Our constant aim is to push the limits of what is possible to ‘invent the future’, with breakthroughs that are 10 times better than are possible today. Our demonstration of 10 Gbps over copper is a prime example: by pushing broadband technology to its limits, operators can determine how they could deliver gigabit services over their existing networks, ensuring the availability of ultra-broadband access as widely and as economically as possible.”

Commenting on the achievement, Federico Guillén, President of Alcatel-Lucent’s Fixed Networks business said: “The Bell Labs speed record is an amazing achievement, but crucially in addition they have identified a new benchmark for ‘real-world’ applications for ultra-broadband fixed access. XG-FAST can help operators accelerate FTTH deployments, taking fiber very close to customers without the major expense and delays associated with entering every home. By making 1 gigabit symmetrical services over copper a real possibility, Bell Labs is offering the telecommunications industry a new way to ensure no customer is left behind when it comes to ultra-broadband access.”

Technical background information
The primary factors influencing broadband speeds over copper are:

  • Distance: the longer the copper connection between the access node and the customer’s telephone socket, the slower the broadband speed. This is dictated by attenuation.
  • Frequency: the wider the frequency range, the faster the broadband speed that can be achieved. The Shannon Limit dictates the maximum possible speed for a given medium and frequency spectrum.
  • Higher frequencies attenuate more quickly than lower frequencies, meaning there are diminishing returns in speed as the frequency range increases.

    During testing, Bell Labs showed that XG-FAST technology can deliver 1 Gbps symmetrical services over 70 meters (for the cable being tested). This was achieved using a frequency range of 350 MHz. Signals at higher frequencies were completely attenuated after 70 meters.

    In practical situations, other significant factors that can influence actual speeds (not taken into account during these tests but which have been studied extensively elsewhere) include the quality and thickness of the copper cable and cross-talk between adjacent cables (which can be removed by vectoring).

    Alcatel-Lucent (NYSE: ALU)

    (1)  | 
    Comment  | 
    Print  | 
  • Newest First  |  Oldest First  |  Threaded View
    rradina
    50%
    50%
    rradina,
    User Rank: Light Beer
    7/9/2014 | 9:53:31 AM
    Wireless Anyone?
    At such short distances, couldn't low density suburban settings use some form of WiFi?  I'd really prefer the cable company use WiFi from the pedestal instead of incurring the cost of replacing the line everytime someone complains about problems with their service.  Trying to transmit 500mhz over UTP would seem just inviting lots of new runs from the curb just like the cable companies do with their coax.
    Flash Poll
    LRTV Huawei Video Resource Center
    Sales Director of INIT on Plug & Play Switch Devices

    9|19|14   |   3:21   |   (0) comments


    INIT Italy uses both the Huawei S5700 and S7700 series switches for the campus LAN environment. Sales Director Andrea Curti says their company chose these Huawei devices over others because of their performance, flexible scalability and plug-and-play features.
    LRTV Huawei Video Resource Center
    Saudi Arabia Upgrades Vocational Training System

    9|19|14   |   3:31   |   (0) comments


    The Technical and Vocational Training Corporation (TVTC) has 100,000 students, 150 government-owned institutions and oversees 1000 private institutes. The CIO of TVTC explains that Huawei devices have allowed them to manage multiple datacenters using just one software program, scientifically tracking the progress of students and teachers, saving them millions.
    LRTV Huawei Video Resource Center
    Huawei's Media Solutions Are Here to Stay

    9|19|14   |   4:35   |   (0) comments


    The current media revolution requires rapid upgrades in technology. New formats (HD, 3D, 4K etc.) and the subsequent explosion of file sizes demand sophisticated network and storage architecture. Social media and the multiple distribution channels require a robust asset management system. Gartner analyst Venecia Liu speaks about the current technological trends in ...
    LRTV Huawei Video Resource Center
    Microgenesis on Huawei's Switches

    9|19|14   |   3:57   |   (0) comments


    Microgenesis is a solutions and system integrator company in the Philippines whose areas of expertise include data centers, networking and security products. In this video, Executive Director Jeffrey Choa talks to us about his customers needs and they benefit from using Huawei switches.
    LRTV Huawei Video Resource Center
    Network Solutions Help the Philippines Jump Ahead

    9|17|14   |   2:59   |   (0) comments


    In the past, the Philippines has under-invested in technology. Now, the CEO of Softshell talks about how Huawei products help the Philippines jump ahead as the economy improves.
    LRTV Huawei Video Resource Center
    VCS Observation for Safer Cities in the Netherlands

    9|17|14   |   5:20   |   (0) comments


    Holland's VCS Observation has been operating for 22 years. Its main goal is to get cities safer. CEO Wim van Deijzen tells us some of the challenges his company faces and how Huawei is helping to overcome these challenges.
    LRTV Huawei Video Resource Center
    A Conversation With Serbia's Ministry of Interior

    9|17|14   |   4:38   |   (0) comments


    At HCC 2014, the Assistant Minister of the Ministry of Interior of the Republic of Serbia talks to us about his projects and corporation with Huawei. Solutions like Safe City and E-Government and services like cloud computing are just some of the areas his department is interested in.
    LRTV Huawei Video Resource Center
    IHS Analyst Discusses eLTE at CCW 2014

    9|10|14   |   7:09   |   (0) comments


    Thomas Lynch, associate director of critical communications at IHS Technology, talks about broadband in critical communications.
    LRTV Huawei Video Resource Center
    TCAA on Huawei eLTE: A Broadband Solution for Mission-Critical Communications

    9|10|14   |   2:29   |   (0) comments


    At CCW2014 in Singapore, the TCCA's Phil Kidner talks about the importance of broadband data for critical communications.
    LRTV Custom TV
    Spotlight on Cisco: SDN for Optical Networks

    9|8|14   |   9:27   |   (0) comments


    Cisco's Greg Nehib talks OpenFlow and more on the 'Software-Defined Networking for Optical Networks' panel at the Big Telecom Event in June 2014.
    LRTV Custom TV
    Cisco's Evolved Programmable Network (EPN)

    9|8|14   |   4:05   |   (0) comments


    A look at the various demos Cisco showed at Light Reading's Big Telecom Event highlighting Cisco's EPN innovation and how SDN and NFV technologies are enabling a variety of new services.
    LRTV Huawei Video Resource Center
    The Future of Ultra-Broadband, With Kevin Kelly (UBBF2014)

    9|5|14   |   1:13   |   (1) comment


    If you think the technological changes we've seen up to now are astounding, just wait until you see what the future has in store. Discuss upcoming breakthroughs with Kevin Kelly, Founding Executive Editor of Wired Magazine, at the Huawei Ultra-Broadband Forum on September 24.
    Upcoming Live Events!!
    September 23, 2014, Denver, CO
    October 29, 2014, New York City
    November 6, 2014, Santa Clara
    November 11, 2014, Atlanta, GA
    December 2, 2014, New York City
    December 3, 2014, New York City
    December 9-10, 2014, Reykjavik, Iceland
    June 9-10, 2015, Chicago, IL
    Infographics
    A survey conducted by Vasona Networks suggests that 72% of mobile users expect good performance all the time, and they'll blame the network operator when it's not up to par.
    Today's Cartoon
    Vacation Special Caption Competition Click Here
    Latest Comment
    Hot Topics
    AT&T: We'll Bundle Fixed Wireless & DirecTV
    Mari Silbey, Independent Technology Editor, 9/15/2014
    New NFV Forum Focused on Interoperability
    Carol Wilson, Editor-at-large, 9/16/2014
    NFV & The Data Center: Top 10 Takeaways
    Sarah Reedy, Senior Editor, 9/18/2014
    Connecticut Cities Crowdsource Gigabit Nets
    Jason Meyers, Senior Editor, Utility Communications/IoT, 9/15/2014
    Pics: LR's Women in Telecom Breakfast
    Sarah Reedy, Senior Editor, 9/16/2014
    Like Us on Facebook
    Twitter Feed