Deutsche Telekom

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 & Signal. The organization has 3473 authors who have published 5208 publications receiving 65429 citations. The organization is also known as: DTAG & German Telecom.

Method for over-the-air personalizing of chip cards in telecommunications

Abstract: The invention relates to a method for commissioning and personalizing a subscriber identification module SIM, wherein the SIM is set up with a non-individual and preliminary set (S*) of initial identifying and authenticating parameters prior to first commissioning, said set comprising at least one non-individual and preliminary subscriber identification (IMSI*) and a non-individual and preliminary secret key (K*), wherein the parameter set (S*) allows first commissioning of the SIM in a mobile telecommunications network by means of a mobile terminal device, wherein personalizing is performed after the first commissioning of the SIM, in that an individual and final subscriber data set (S) is transferred to and stored on the SIM, particularly comprising a unique final subscriber identification (IMSI) and a unique final secret key (K), particularly in that the final subscriber data set (S) is transferred by means of a regular connection of the mobile telecommunications system using the preliminary set (S*) The number of potential preliminary subscriber data sets is prescribed and is particularly much less than the total number of subscriber identification modules (SIM) equipped with said data sets It can also be reused cyclically The final subscriber data set is first stored after the mobile terminal device confirms that the personalization process was successful Otherwise, the personalization request is automatically repeated, or the personalization data are sent again

An enactive approach to the design of new tangible musical instruments

Abstract: In this paper, we propose a theoretical framework for the design of tangible interfaces for musical expression. The main insight for the proposed approach is the importance and utility of familiar sensorimotor experiences for the creation of engaging and playable new musical instruments. In particular, we suggest exploiting the commonalities between different natural interactions by varying the auditory response or tactile details of the instrument within certain limits. Using this principle, devices for classes of sounds such as coarse grain collision interactions or friction interactions can be designed. The designs we propose retain the familiar tactile aspect of the interaction so that the performer can take advantage of tacit knowledge gained through experiences with such phenomena in the real world.

Method for co-channel interference cancellation in a multicarrier communication system

Abstract: A method for cancelling co-channel interference in a multi-carrier communication system includes receiving a serial baseband multi-carrier signal including at least one desired signal and at least one interference signal over at least one receiving branch, and converting the received multi-carrier signal into a plurality of baseband sub-carrier signals. Co-channel interference in each sub-carrier signal is cancelled by subtracting an estimated desired received sub-carrier signal and an estimated interference sub-carrier signal from a received sub-carrier signal. The sub-carrier signals are converted to a multi-carrier output signal comprising the desired signal.

Collaboration between internet service providers and content distribution systems

Abstract: A method for enabling collaboration between an internet service provider (ISP) and another entity includes: gathering a domain name system (DNS) query; evaluating the DNS query wherein the evaluating comprises collecting candidate hosts suitable for delivering content in accordance with the DNS query; ranking the candidate hosts collected by the ISP; providing a first list of the ISP-ranked candidate hosts; forwarding the DNS query to the another entity; evaluating the DNS query wherein the evaluating comprises collecting candidate hosts suitable for delivering content in accordance with the DNS query; ranking the candidate hosts collected by the another entity; providing a second list of the another entity-ranked candidate hosts; matching the first list and the second list; and providing a matched list of ranked candidate hosts. The another entity is a content distribution system (CDN) or another ISP.

Code Family for Modified Spectral-Amplitude-Coding OCDMA Systems and Performance Analysis

Abstract: A novel family of codes for modified spectral-amplitude-coding optical code division multiple access (SAC-OCDMA) is introduced. The proposed codes exist for more processing gains than the previously reported codes do. In the network using these codes, the number of users can be extended without any essential changes in the previous transmitters. In this study, we propose a construction method for these codes and compare their performance with previously reported codes.