Search for dissertations about: "umts gsm"

Found 4 swedish dissertations containing the words umts gsm.

  2. 1. Generating Road Traffic Information Based on Cellular Network Signaling

    Author : David Gundlegård; Johan M Karlsson; Di Yuan; Francisco Benitez; Linköpings universitet; []
    Keywords : ;

    Abstract : Cellular networks of today generate a massive amount of signalling data. A large part of this signalling is generated to handle the mobility of subscribers, irrespective of the subscriber actively uses the terminal or not. Hence it contains location information that can be used to fundamentally change our understanding of human travel patterns. READ MORE

  4. 2. Characterization of Small Antennas & Wireless Devices for MIMO Systems in Rich Isotropic Multipath & Random Line-of-Sight

    Author : Ahmed Hussain; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MIMO; Rayleigh; reverberation chamber; random LOS; RIMP; LTE; OTA;

    Abstract : The current thesis is about over-the-air (OTA) performance characterization of wireless terminals in rich isotropic multipath (RIMP) environment as well as in pure line-of-sight (LOS) environment while not ignoring the random positions and orientations of the mobile terminals due to randomness of the user. The latest mobile wireless terminals such as iPhone and iPad can be used in any random position and orientation thereby making the received LOS-component toappear as a random voltage at the antenna ports. READ MORE

  5. 3. Evolution of Techno-Economic Systems - An Investigation of the History of Mobile Communications

    Author : Sven Lindmark; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mobile data communications; application diversification; mobile telephony; standards; complementarities; diffusion; techno-economic systems; convergence; competition; technological change;

    Abstract : The purpose of this thesis is to contribute to the understanding of how techno-economic systems emerge and evolve and how such processes can be analyzed. To these ends, the history of mobile communications is investigated, seen as a complex techno-economic system with two rapidly evolving and interacting subsystems - mobile telephony and mobile data communications - which are described, dissected and compared in case studies. READ MORE

  6. 4. Transport Analytics Based on Cellular Network Signalling Data

    Author : David Gundlegård; Johan M. Karlsson; Tommy Svensson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Cellular networks of today generate a massive amount of signalling data. A large part of this signalling is generated to handle the mobility of subscribers and contains location information that can be used to fundamentally change our understanding of mobility patterns. READ MORE