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Institution

Deutsche Telekom

CompanyWelwyn Garden City, United Kingdom
About: Deutsche Telekom is a company organization based out in Welwyn Garden City, United Kingdom. It is known for research contribution in the topics: Telecommunications network & Terminal (electronics). The organization has 3473 authors who have published 5208 publications receiving 65429 citations. The organization is also known as: DTAG & German Telecom.


Papers
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Journal ArticleDOI
TL;DR: While G.729 was being finalized, a new requirement for a low complexity 8-b/s speech coding arose and this article explains how the change in scope was accommodated without the unnecessary proliferation of incompatible algorithms.
Abstract: In November 1995 the International Telecommunication Union Telecommunications Sector (ITU-T) approved an 8-kb/s speech coding algorithm with wireline quality. This culminated the effort that the CCITT had set in motion in 1990. This article presents the methods for managing the project through its major milestones from setting the terms of reference to the selection, testing, optimization, and dissemination of the algorithm. While G.729 was being finalized, a new requirement for a low complexity 8-b/s speech coding arose. This article explains how the change in scope was accommodated without the unnecessary proliferation of incompatible algorithms.

15 citations

Journal ArticleDOI
TL;DR: In this article, it was shown that field emitters of this kind need less than 100 V for an emission current of more than 1 mA. The results are compared to those of former experiments which could be confirmed by this piece of work.

15 citations

Patent
25 Jun 1997
TL;DR: In this paper, a telecommunication system having frequency-dividing optical components where light pulses having different frequencies are coupled out of a optical fiber by fiber grating and/or photonic crystals and imaged by focusing elements outside of the optical fiber.
Abstract: A telecommunication system having frequency-dividing optical components where light pulses having different frequencies are coupled out of a optical fiber by fiber grating and/or photonic crystals and imaged by focusing elements outside of the optical fiber. The fiber grating for different frequencies can be used in a single period or in different periods disposed one after the other. The photonic crystals can be used at the optical fiber extremity or etched in a channel or trench in a glass fiber. Delay elements are added to ensure that different frequency light pulses are imaged simultaneously in a given and desired time relation as required for further parallel processing.

15 citations

Proceedings ArticleDOI
Vinay Aggarwal1, Obi Akonjang, Anja Feldmann1, R. Tashev, S. Mohr 
13 Feb 2008
TL;DR: This paper details the implementation of a popular P2P file sharing system in a simulation framework, and discusses some of the salient features of the implementation, and compares packet level with application level simulators.
Abstract: In this paper, we detail our experiences with the implementation of a popular P2P file sharing system in a simulation framework. We discuss some of the salient features of our implementation, and compare packet level with application level simulators. We then explain how we reflect user behaviour models in our simulation framework. After describing the use of visualization as an important analysis tool, we finally make some observations from our experiences with P2P simulations.

15 citations

Proceedings ArticleDOI
09 Mar 2014
TL;DR: The record capacity of 21.4 Gb/s over 50-m link based on SI-POF with 1-mm core diameter employing WDM technology with six laser-based channels is reported.
Abstract: We report the record capacity of 21.4 Gb/s over 50-m link based on SI-POF with 1-mm core diameter employing WDM technology with six laser-based channels.

15 citations


Authors

Showing all 3475 results

NameH-indexPapersCitations
Jörg Müller6740715282
Anja Feldmann6734017422
Yuval Elovici6254414451
Lior Rokach5535719989
Pan Hui5246817724
Hartmut G. Roskos504349643
Wolfgang Haase5062411634
Shlomi Dolev4851610435
Jean-Pierre Seifert452987516
Stefan Schmid455619088
Fabian Schneider441647437
Karsten Buse433947774
Tansu Alpcan432937840
Florian Metze423187148
Christian Bauckhage422858313
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20232
20227
202139
202061
201984
201897