Monday, 16 September 2013

Go Fast with G Fast

G Fast is a revolution in telecom field. One magic that it can transform all normal copper wire connections used for voice near FTTH network.
The latest advancement in DSL technology is Omega DSL. Also known as G.Fast, the technology introduced by Alcatel Lucent recently is promising to revolutionise the broadband services making  near FTTH broadband speeds a reality.
Whilst FTTH (such as GPON) has widely been touted as the optimal solution for providing Gigabit connectivity, there are still fundamental challenges for operator to lay fibre for those final metres to the subscriber’s home.
G.Fast is a promising technology that is attracting increasing interest fr0m operators looking to provide FTTH-like speeds without the trouble and cost associated with fibre. G.Fast promise to provide theoretical aggregate upstream and downstream capacity of up to 1Gbps at distances of up to 500m using existing copper phone line infrastructure.
G.Fast achieves this by compounding various technologies that improves both speed and reach around VDSL2. This is done by combining technologies such as pair-bonding (bonding two copper pairs together), vectoring (eliminating cross talk or interference between different VDSL2 lines) and phantom mode (creating virtual pairs between copper pairs).
In combination with GPON, the operator now has a more cost effective method of deploying FTTH-speeds to the subscriber’s home by deploying fibre up to the last 200m, fr0m which the distribution point can then utilise G.Fast to complete the final metres.
ITU has already began the project on G.Fast in February 2011 with the expectation for an industry approved standard by March 2014. D-Link is working today with selective Operators to achieve FTTdp deployment and trials. Please contact us for more information as we work with your local Operators to trial this new technology.
G.Fast  the new technology fulfils the need of high speed and  wide bandwidth . G-Fast is a revolution in telecom field. One magic that it can transform all normal copper wire connections used for voice to near FTTH network. Its quite obvious that International Telecommunications Union(ITU) has taken a step forward standardizing the G-Fast, next major DSL- based standard which vendors hope will provide a “fibre- like” experience without having to drag the glass all the way into homes. 
This new technology is committed to reach the masses and help narrow the digital divide. Increased broadband penetration will have a positive effect in the growth of our economy. 
G.fast is intended☺ for typical applications of 500 megabits per second (Mbps) speeds at 100 meters or less. In recent demonstrations and under laboratory conditions, Alcatel-Lucent achieved 1.3 Gbps over 70 meters, making G.fast a promising option for service providers to complement their fiber deployments.
Today, two-thirds of the world’s broadband subscribers are connected through digital subscriber lines (DSL). And more than 1.25 billion households are connected to a copper line. G.Fast is the latest advancement in DSL technology to turbocharge copper networks and bring more bandwidth to more people — quickly and cost effectively.
Broadband is not just for people who want access to the latest entertainment. Governments realize that universal broadband is critical for socio-economic development. National broadband plans include specific bandwidth targets and timelines.
In response, service providers and governments alike have begun Fiber to the Home deployments; however, these rollouts take time. As a result, service providers are looking for ways to get to fast, faster.
Over the past 25 years, copper speeds have increased by a factor of 1000. Alcatel-Lucent has played a key role in these advances, achieving a number of industry firsts in ADSL, VDSL2 Bonding, VDSL2 Vectoring technologies and Phantom Mode research. With these technologies, service providers are breathing new life into their copper networks, and providing fast broadband, faster.
Alcatel-Lucent  and A1, the Austrian subsidiary of Telekom Austria Group, have conducted the world’s first trial of an innovation fr0m Alcatel-Lucent’s Bell Labs that can upgrade existing copper telecommunications networks into ultra-fast broadband access systems capable of delivering video, data and information at speeds of more than 1 gigabit per second (Gbps).
With Alcatel-Lucent repositioning itself as a specialist in IP Networking and Ultra-broadband access, the company has adapted Bell Labs vectoring techniques - already in widespread commercial deployment in VDSL2 networks - to work with a new transmission technology called G.fast, which use a wide frequency band to achieve very high speeds on copper lines over very short distances.
In any fiber-to-the-home project, a substantial part of the cost-per-subscriber is in the last few meters between the nearest network cabinet and the home. These costs can be avoided by using G.fast over the existing copper telephone line, rather than having to dig up roads or private property to install new fiber.
Bell Labs vectoring technology addresses one of the challenges related to the deployment of G.fast. In many real-world applications, such as fiber-to-the-building, the copper lines serving neighboring homes are packed closely together: this results in crosstalk interference between lines, which significantly reduces the potential speed of data transmission. G.fast vectoring removes this crosstalk, stabilizes the transmission quality and enables the technology to perform to its full potential.

Source:
http://cablequest.org/articles/broadband/item/3227-go-fast-with-g-fast.html
Source: http://cablequest.org/articles/broadband/item/3227-go-fast-with-g-fast.html

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