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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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Patent
Michael Kurz1
27 Jul 2010
TL;DR: In this paper, a method for acquiring user inputs and for performing certain functions of an electronic device, in particular a computer and/or a mobile radio terminal, and to a device to carry out this method, wherein the acquisition takes place by means of a touch-sensitive display surface, which is configured to register a fingerprint.
Abstract: The invention relates to a method for acquiring user inputs and for performing certain functions of an electronic device ( 1 ), in particular a computer and/or a mobile radio terminal, and to a device ( 1 ) to carry out this method, wherein the acquisition takes place by means of a touch-sensitive display surface ( 2 ), which is configured to register a fingerprint ( 3 ), wherein a touch of predetermined limited areas of the display surface ( 2 ) by a user is expected in order to activate and/or select functions. A touch of the display surface ( 2 ) in one or more predetermined areas with one or more predetermined fingers simultaneously or successively in a predetermined sequence is expected. The display surface ( 2 ) registers the fingerprints ( 3 ) of the user when it is touched, and a predetermined function of the device ( 1 ) is activated and/or performed depending on the touched area or areas of the display surface ( 2 ), the registered fingerprints ( 3 ) and the sequence.

18 citations

Proceedings ArticleDOI
07 May 1996
TL;DR: A new algorithm for the classification of telephone-bandwidth speech that is designed for efficient control of bit allocation in low bit-rate speech coders and in comparison with a classifier based on the long-term autocorrelation function, the D/sub y/WT classifier proves to be superior.
Abstract: This paper describes a new algorithm for the classification of telephone-bandwidth speech that is designed for efficient control of bit allocation in low bit-rate speech coders. The algorithm is based on the dyadic wavelet transform (D/sub y/WT) and classifies each unit subframe into one of the three categories background noise/unvoiced, transients/voicing onsets, periodic/voiced. A set of three parameters is derived from the D/sub y/WT coefficients, each giving a decision score that the associated class is active. Taking the history into account, a finite-state model controlled by these parameters computes the classifier's decision. The proposed algorithm is robust to various types of background noise. In comparison with a classifier based on the long-term autocorrelation function, the D/sub y/WT classifier proves to be superior. To evaluate its performance in CELP-type speech coders, a variety of excitation coding schemes with bit rates between 2200 and 4800 bit/s is investigated.

18 citations

Proceedings ArticleDOI
Dirk Breuer1, Ralf Hulsermann1, Christoph Lange1, Thomas Monath1, Erik Weis1 
04 Nov 2010
TL;DR: In this article, the potential challenges towards next generation optical access technologies and architectures are reviewed based on operator requirements and the impact of new business models on network architecture is discussed, as well as the potential impact of business models and new access technologies on network architectures.
Abstract: Potential challenges towards next generation optical access technologies and architectures are reviewed based on operator requirements. Additionally the impact of new business models on network architecture is discussed.

18 citations

Patent
20 Sep 1996
TL;DR: In this paper, the authors evaluate operation parameters of a mobile radio network and determine traffic conditions in at least a part of the road system which is covered by the radio network using specific algorithms.
Abstract: The method involves evaluating operation parameters of a mobile radio network. The parameters include information of operating sequences and conditions in the network. Traffic conditions are determined in at least a part of the road system which is covered by the mobile radio network using specific algorithms. Preferably, types of operation outlines are formed which represent characteristic traffic conditions and which are recorded as reference outlines with further parameters which characterise the traffic condition. Current determined operation parameters and current determined parameters characterising the traffic condition are set in relation to the reference outlines. If variations in the reference outline are detected, the road sections with incidents are identified using specific algorithms.

18 citations

Proceedings Article
16 Oct 2009
TL;DR: In this article, a PM-RZ-DQPSK with direct detection and fast optical polarisation tracking achieves 6dB noise margin over a long-haul field link.
Abstract: PM-RZ-DQPSK with direct detection and fast optical polarisation tracking achieves 6dB noise margin over a long-haul field link. The crosstalk by 10&40G OOK channels at 50GHz spacing is analysed for high channel power.

18 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