Search for dissertations about: "RXS"

Found 5 swedish dissertations containing the word RXS.

  2. 1. Wave packet theory of resonant X-ray scattering

    Author : Pawel Salek; KTH; []
    Keywords : RXS; x-ray scattering; wave packets; TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract : .... READ MORE

  4. 2. Dynamics of optical and X-ray responses of molecules

    Author : Alexander Baev; KTH; []
    Keywords : two-photon absorption; collisional dephasing; resonant photoemission;

    Abstract : The aim of this licentiatethesis is to investigate by means of theoretical simulationsthe dynamics of light scattering by molecules, with specialemphasis on molecules in gas phase and in solutions.The first part of the thesisconcerns the two-photon absorption (TPA) process in the opticalwavelength region. READ MORE

  5. 3. The MISO Interference Channel as a Model for Non-Orthogonal Spectrum Sharing

    Author : Johannes Lindblom; Erik G. Larsson; Eleftherios Karipidis; Wolfgang Utschick; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The demand for wireless communications services has increased during the last decades. To meet this demand, there is a need for allocating larger frequency bands. However, most of the frequency bands (or spectrum) suitable for wireless communication are occupied and allocated to licensed systems. READ MORE

  6. 4. On the Performance of Underlay Cognitive Radio Networks with Interference Constraints and Relaying

    Author : Charles Kabiri; Blekinge Tekniska Högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cognitive Radio Networks; Cognitive Cooperative Relay Networks; Underlay Spectrum Access; Interference Constraint; Outage Constraint;

    Abstract : Efficiently allocating the scarce and expensive radio resources is a key challenge for advanced radio communication systems. To this end, cognitive radio (CR) has emerged as a promising solution which can offer considerable improvements in spectrum utilization. READ MORE

  7. 5. Performance Analysis of Cognitive Radio Networks under Spectrum Sharing and Security Constraints

    Author : Louis Sibomana; Zepernick Hans-Jürgen; Slimane Ben Slimane; Blekinge Tekniska Högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Underlay cognitive radio networks; spectrum sharing constraints; physical layer security;

    Abstract : The cognitive radio network (CRN) concept has been proposed as a solution to the growing demand and underutilization of the radio spectrum. To improve the radio spectrum utilization, CRN technology allows the coexistence of licensed and unlicensed systems over the same spectrum. READ MORE