Nokia Bell Labs, Deutsche Telekom T-Labs and Technical University of Munich achieve speeds of 1 Tb per second in groundbreaki...
September 16 2016 - 3:06AM
Press Release
- In jointly conducted research of optical systems, Nokia Bell
Labs, Deutsche Telekom T-Labs and the Technical University of
Munich achieved a 1 Terabit-per-second transmission rate over
optical fiber
- Probabilistic Constellation Shaping provides greater
flexibility and performance to enable optical networks to operate
closer to the Shannon limit to meet growing consumer and business
data demands
- Breakthrough will allow telecommunication operators and
enterprises to further maximize the distance and capacity of high
speed data transmission in optical metro and core networks
DUESSELDORF, Germany, Sept. 16, 2016 (GLOBE NEWSWIRE)
-- Nokia Bell Labs, Deutsche Telekom T-Labs and the
Technical University of Munich have achieved unprecedented
transmission capacity and spectral efficiency in an optical
communications field trial with a new modulation technique. The
breakthrough research could extend the capability of optical
networks to meet surging data traffic demands.
The demonstration shows that the flexibility and performance of
optical networks can be maximized when adjustable transmission
rates are dynamically adapted to channel conditions and traffic
demands. As part of the Safe and Secure European Routing (SASER)
project, the experiment over a deployed optical fiber network of
Deutsche Telekom achieved a net 1 Terabit transmission rate. This
is close to the theoretical maximum information transfer rate of
that channel and thus approaching the Shannon Limit of the fiber
link.
The Shannon Limit was discovered in 1948 by Claude Shannon, Bell
Labs pioneer and the "father of information theory."
The trial of the novel modulation approach, known as
Probabilistic Constellation Shaping (PCS), uses quadrature
amplitude modulation (QAM) formats to achieve higher transmission
capacity over a given channel to significantly improve the spectral
efficiency of optical communications.
PCS modifies the probability with which constellation points -
the alphabet of the transmission - are used. Traditionally, all
constellation points are used with the same frequency. PCS cleverly
uses constellation points with high amplitude less frequently than
those with lesser amplitude to transmit signals that, on average,
are more resilient to noise and other impairments. This allows the
transmission rate to be tailored to ideally fit the transmission
channel, delivering up to 30 percent greater reach.
The research is a key milestone in proving PCS could be used in
the future to extend optical communication technologies.
It was 50 years ago when optical fiber was introduced. With the
promise of 5G wireless technology on the horizon, optical transport
systems today continue to evolve to help telecommunications
operators and enterprises meet network data traffic growing at a
cumulative annual rate of up to 100 percent. PCS is now part of
this evolution by enabling increases in optical fiber flexibility
and performance that can move data traffic faster and over greater
distances without increasing the optical network complexity.
Nokia Bell Labs will present the results of this joint
experiment at the European Conference on Optical Communication
(ECOC) 2016 in Düsseldorf, Germany on September 19.
Bruno Jacobfeuerborn, Director Technology Telekom Deutschland
and CTO Deutsche Telekom, said: "To guarantee a high customer
experience for future services we need optical transmissions with
increased capacities, reach and flexibility over deployed fiber
infrastructures. Deutsche Telekom provides a unique network
infrastructure to evaluate and demonstrate such highly innovative
transmission technologies for example. Furthermore, it also
supports higher layer test scenarios and technologies."
Gerhard Kramer, Professor, Technical University of Munich,
said : "Information theory is the mathematics of digital
technology, and during the Claude E. Shannon centenary year 2016 it
is thrilling to see his ideas continue to transform industries and
society. Probabilistic constellation shaping, an idea that won a
Bell Labs Prize, directly applies Shannon's principles and lets
fiber optic systems transmit data faster, further, and with
unparalleled flexibility. The success of the close collaboration
with Nokia Bell Labs, who further developed the technology, and
Deutsche Telekom T-Labs, who tested it under real conditions, is
satisfying confirmation that TUM Engineering is a label of
outstanding quality, and that TUM teaching gives our students the
intellectual tools to compete, succeed and lead globally."
Marcus Weldon, president Nokia Bell Labs & Nokia
CTO, said: "Future optical networks not only need to
support orders of magnitude higher capacity, but also the ability
to dynamically adapt to channel conditions and traffic demand.
Probabilistic Constellation Shaping offers great benefits to
service providers and enterprises by enabling optical networks to
operate closer to the Shannon Limit to support massive datacenter
interconnectivity and provide the flexibility and performance
required for modern networking in the digital era."
Resources:
- Nokia Bell Labs
- Claude Shannon
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About Deutsche Telekom Deutsche Telekom is one of the
world's leading integrated telecommunications companies with more
than 156 million mobile customers, 29 million fixed-network lines
and around 18 million broadband lines (as of December 31, 2015).
The Group provides fixed-network/broadband, mobile communications,
Internet, and Internet-based TV products and services for
consumers, and ICT solutions for business customers and corporate
customers. Deutsche Telekom is present in more than 50 countries
and has around 225,200 employees worldwide. The Group generated
revenues of EUR 69.2 billion in the 2015 financial year - around 64
percent of it outside Germany.
About Technical University of Munich Technical University
of Munich (TUM) is one of Europe's leading research universities,
with more than 500 professors, around 10,000 academic and
non-academic staff, and 39,000 students. Its focus areas are the
engineering sciences, natural sciences, life sciences and medicine,
reinforced by schools of management and education. TUM acts as an
entrepreneurial university that promotes talents and creates value
for society. In that it profits from having strong partners in
science and industry. It is represented worldwide with a campus in
Singapore as well as offices in Beijing, Brussels, Cairo, Mumbai,
San Francisco, and São Paulo. Nobel Prize winners and inventors
such as Rudolf Diesel, Carl von Linde, and Rudolf Mößbauer have
done research at TUM. In 2006 and 2012 it won recognition as a
German "Excellence University." In international rankings, TUM
regularly places among the best universities in Germany.
www.tum.de
About Nokia Nokia is a global leader in the technologies
that connect people and things. Powered by the innovation of Nokia
Bell Labs and Nokia Technologies, the company is at the forefront
of creating and licensing the technologies that are increasingly at
the heart of our connected lives.
With state-of-the-art software, hardware and services for any
type of network, Nokia is uniquely positioned to help communication
service providers, governments, and large enterprises deliver on
the promise of 5G, the Cloud and the Internet of Things.
http://nokia.com
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