Light Reading

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        ADD A COMMENT
    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
    From The Founder
    Ericsson's Hyperscale Datacenter System (HDS) 8000, featuring Intel's Rack Scale Architecture, caused a stir when it was announced at MWC 2015. For more on this revolutionary product, join me on Thursday, April 30 at 12:00 p.m. EST for a Super Webinar event, A New Hardware Paradigm for the Telco Data Center.
    LRTV Documentaries
    Cox Eyes Cloud-Based Home Networks

    4|27|15   |   05:30   |   (0) comments


    Cox's Jeff Finkelstein explains how moving services to the cloud will let cable deliver services faster and eliminate constant hardware replacements.
    LRTV Documentaries
    CableLabs' Clarke Updates Cable Virtualization

    4|23|15   |   05:41   |   (1) comment


    Former BT exec now leading CableLabs' NFV and SDN efforts explains key role of open source and updates efforts to virtualize the home network.
    LRTV Interviews
    Ericsson's CTO Talks Transformation: Pt. II

    4|23|15   |   08:19   |   (1) comment


    In the second installment of an in-depth two-part interview, Ericsson's CTO Ulf Ewaldsson talks to Light Reading CEO and founder Steve Saunders about cultural change, network slicing and technology advances.
    LRTV Interviews
    Ericsson's CTO Talks Transformation: Pt. I

    4|23|15   |   09:27   |   (3) comments


    In the first installment of an in-depth two-part interview, Ericsson's CTO Ulf Ewaldsson talks to Light Reading CEO and founder Steve Saunders about the incredible transformation underway in the communications networking industry.
    LRTV Documentaries
    LTE Paves the Way for the 5G Revolution

    4|20|15   |   4:20   |   (0) comments


    Håkan Andersson, head of 5G product strategy of the Radio Business Unit at Ericsson, discusses the role of LTE, the US and other industry verticals in building a true 5G ecosystem.
    LRTV Documentaries
    The 3GPP's Road to 5G Standardization

    4|17|15   |   4:43   |   (0) comments


    Satoshi Nagata, chairman of the 3GPP's TSG-RAN group and a manager at NTT Docomo, explains the standardization process for 5G, as well as the biggest challenges and opportunities.
    LRTV Documentaries
    AlcaLu CTO Makes the Case for a New 5G Air Interface

    4|16|15   |   3:54   |   (0) comments


    Michael Peeters, CTO of wireless at Alcatel-Lucent, explains why 5G will require a new air interface to meet its diverse performance targets.
    LRTV Documentaries
    AlcaLu + Nokia: The New Uber-Vendor

    4|15|15   |   2:42   |   (4) comments


    Heavy Reading Senior Analyst Gabriel Brown discusses the technological and competitive opportunities and challenges if a merger between Alcatel-Lucent and Nokia comes to pass.
    LRTV Huawei Video Resource Center
    Huawei's Data Center Power Play

    4|15|15   |   6:22   |   (0) comments


    Huawei has developed industry-leading energy efficiency capabilities for its indoor and outdoor data center solutions, explains Dr. Fang Liangzhou, vice president of Huawei's Network Energy product Line.
    LRTV Huawei Video Resource Center
    Huawei’s Routers, Switches Get the Green Mark

    4|15|15   |   2:02   |   (0) comments


    TUV Rheinland's Frank Dudley explains how Huawei's routers and switches have been successfully tested by energy efficiency experts and have gained Green Mark Certification.
    LRTV Documentaries
    A Finn, a Frenchman & a Guy From New Jersey Walk Into a Merger...

    4|15|15   |   3:17   |   (0) comments


    Stop us if you've heard this one before... Light Reading CEO Founder & CEO Steve Saunders weighs in on the technical and cultural implications of a Nokia and Alcatel-Lucent merger.
    LRTV Huawei Video Resource Center
    Accounting for Better Solutions

    4|10|15   |   02:31   |   (1) comment


    Murad Yousuf, CTO at Saudi Arabia's Ministry of Finance (Dept. of Zakat & Income Tax), talks about the benefits of deploying router technology from Huawei.
    Upcoming Live Events
    May 6, 2015, Georgia World Congress, Atlanta, GA
    May 12, 2015, Grand Hyatt, Denver, CO
    May 13-14, 2015, The Westin Peachtree, Atlanta, GA
    June 8, 2015, Chicago, IL
    June 9-10, 2015, Chicago, IL
    June 9, 2015, Chicago, IL
    June 10, 2015, Chicago, IL
    September 29-30, 2015, The Westin Grand Müchen, Munich, Germany
    October 6, 2015, Westin Peachtree Plaza, Atlanta, GA
    November 11-12, 2015, The Westin Peachtree Plaza, Atlanta, GA
    All Upcoming Live Events
    Infographics
    In its latest survey covering network operators' plans and strategies for ICT transformation, Heavy Reading asked telecom operators worldwide to identify the most important goals and objectives for their ICT transformation initiatives. Heavy Reading also asked operators about the importance of a "digital first" strategy, which enables customers to complete an interaction across different digital channels, such as web and mobile self-service and social media.
    Hot Topics
    Comcast Formally Ends Its Bid for TWC
    Mari Silbey, Independent Technology Editor, 4/24/2015
    Comcast Reportedly Dropping $45B TWC Bid
    Sarah Thomas, Editorial Operations Director, 4/23/2015
    Google's WiFi-First Mobile Service 'Fi' Is Here
    Dan Jones, Mobile Editor, 4/22/2015
    Amazon Earnings: What to Watch For
    Mitch Wagner, West Coast Bureau Chief, Light Reading, 4/23/2015
    Adtran Is Developing White Box GPON Tech
    Ray Le Maistre, Editor-in-chief, 4/24/2015
    Like Us on Facebook
    Twitter Feed
    Webinar Archive
    BETWEEN THE CEOs - Executive Interviews
    Many leading communications companies can claim to have undergone significant periods of reinvention during their histories, but none have been through more major ...
    Data Center Interconnect, or DCI, is one of the hottest sectors in telecom currently. Since coming back to Light Reading last year, prodigal-son style, I've ...
    Cats with Phones
    Learning Curve Click Here
    Pierre could never remember how to use Excel.
    Latest Comment