Huawei, a global information and communications
technology provider, announced it launched Giga DSL prototype.
The Giga DSL system employs time division duplex (TDD) to
achieve a total upstream and downstream rate of 1,000 Mb/s over a single
twisted pair.
The prototype is primarily aimed at addressing at
obstacles related to limited bandwidth of FTTB / FTTC and difficulty in
deploying FTTH drop cables. While 100 Mbp/s-plus ultra-broadband access can be
made available quickly by utilizing legacy copper line resources, providing
1,000 Mbp/s bandwidth within 100 meters of twisted pairs using DSL technology
is more complex, Huawei officials said.
According to Huawei officials, by using low-power
spectral density in-signal transmission, Huawei’s Giga DSL prototype reduces
radiation interference and power consumption, and provides a total upstream and
downstream rate of one Gb/s within 100 meters, and 500 Mb/s-plus within 200
meters.
Huawei officials said that this will be a cost-effective
option for telecom operators building ultra-broadband access networks.
In 2011, ITU-T set up a G.fast project team to formulate
new standards for ultra-speed access at short distances. Huawei has
participated in the work of the team and become a major technical contributor,
having recently worked to incorporate TDD-OFDM as a G.fast modulation mode.
“Huawei has taken the lead in developing a Giga DSL
prototype because of our rich capabilities and technical strengths in access
networks. It was inevitable that spectrum expansion would help us improve the
rate of a twisted pair at a short distance, but after the spectrum is expanded,
a technical issue appears: how to design the high-speed physical layer and
high-frequency analog front end (AFE),” said Long Guozhu, Huawei’s
Principal Expert of DSL technology.
To tackle this issue, Huawei’s FBB Innovation Lab used
the core solution TDD-OFDM, which simplifies the physical-layer architecture
and the AFE design, while at the same time makes it possible to be downward
compatible with traditional ADSL/VDSL2 technologies,” Guozhu added.
Huawei recently announced the development of the world’s
first node level vectoring (NLV) prototype. Huawei’s vectoring product provides
100 Mbps access over a single twisted pair in FTTC/FTTB, and has been tested
and commercially trialed with many leading telecom operators. This, along with
the company’s latest prototype, Giga DSL, signifies that DSL technology still
has great potential to meet the requirements of broadband users for
ultra-high-speed access in the future.
Huawei’s advances within Giga DSL will enhance the
capabilities of the company’s SingleFAN broadband access solution. Its
SingleFAN solution and related offerings are now servicing over one third of
the world’s broadband users with ultra-broadband access services.
By Telecomlead.com Team
editor@telecomlead.com