Search for dissertations about: "SRA - Informations- och kommunikationsteknik"

Showing result 1 - 5 of 82 swedish dissertations containing the words SRA - Informations- och kommunikationsteknik.

  1. 1. Digital Dispersion Equalization and Carrier Phase Estimation in 112-Gbit/s Coherent Optical Fiber Transmission System

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Tianhua Xu; Sergei Popov; Gunnar Jacobsen; Jie Li; Magnus Karlsson; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Coherent transmission; chromatic dispersion; carrier phase estimation; digital signal processing; NATURAL SCIENCES Physics Other physics Optics; NATURVETENSKAP Fysik Övrig fysik Optik; TECHNOLOGY Electrical engineering; electronics and photonics Photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Fotonik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Coherent detection employing multilevel modulation format has become one of the most promising technologies for next generation high speed transmission system due to the high power and spectral efficiencies. With the powerful digital signal processing (DSP), coherent optical receivers allow the significant equalization of chromatic dispersion (CD), polarization mode dispersion (PMD), phase noise (PN) and nonlinear effects in the electrical domain. READ MORE

  2. 2. Design and Implementation of Centrally-Coordinated Peer-to-Peer Live-streaming

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Roberto Roverso; Seif Haridi; Sameh El-Ansary; Jim Dowling; Peter Van Roy; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; peer-to-peer; live-streaming; nat traversal; TECHNOLOGY Electrical engineering; electronics and photonics Electrical engineering; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik Elektroteknik; TECHNOLOGY Information technology Computer engineering; TEKNIKVETENSKAP Informationsteknik Datorteknik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : In this thesis, we explore the use of a centrally-coordinated peer-to-peer overlay as a possible solution to the live streaming problem. Our contribution lies in showing that such approach is indeed feasible given that a number of key challenges are met. READ MORE

  3. 3. Enabling Internet-Scale Publish/Subscribe In Overlay Networks

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Fatemeh Rahimian; Seif Haridi; Šarunas Girdzijauskas; Márk Jelasity; [2011]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Publish Subscribe; Content Distribution; Peer-To-Peer Overlay Network; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : As the amount of data in todays Internet is growing larger, users are exposedto too much information, which becomes increasingly more difficult tocomprehend. Publish/subscribe systems leverage this problem by providingloosely-coupled communications between producers and consumers of data ina network. Data consumers, i.e. READ MORE

  4. 4. Towards a framework for analyzing IT strategy management in public sector a case for IT organisations in the public sector

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Anayanci López Poveda; Paul Johannesson; Lazar Rusu; Anne Håkansson; [2011]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; IT strategy management; strategic management of IT; IT service management; public sector; small medium sized IT organizations.; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Small/medium sized public sector IT organisations combine several characteristics that difficult the effective use of an IT strategy. Research has reported small/medium sized organisations as using unstructured and informal IT management initiatives, which frequently leads to inexistent or incipient use of IT strategy. READ MORE

  5. 5. Mobile Phone-based Vehicle Positioning and Tracking and Its Application in Urban Traffic State Estimation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Sha Tao; Ana Rusu; Elnaggar Mohammed Ismail; Saul Rodriguez; Wilco Burghout; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - ICT; SRA - Informations- och kommunikationsteknik; SRA - Transport; SRA - Transport;

    Abstract : Enabling the positioning and tracking of mobile phones has emerged as a key facility of existing and future generation mobile communication systems. This feature provides opportunities for many value added location-based services and systems. READ MORE