Sökning: "Robert S. Karlsson"

Hittade 4 avhandlingar innehållade orden Robert S. Karlsson.

  1. 1. Radio Resource Sharing in Hierarchical Cellular Systems

    Författare :Robert S. Karlsson; KTH; []
    Nyckelord :;

    Sammanfattning : Hierarchical Cell Structures (HCSs) is generally believed tobe a solution to capacity problems of future mobilecommunication systems. In such systems we have a mix of cellsizes that handle different types of traffic. We can have largecells providing wide area coverage and small cells providinghigh capacity. LÄS MER

  3. 2. Cooperative Spectrum Sharing and Device-to-Device Communications

    Författare :Serveh Shalmashi; Ben Slimane; Jens Zander; Robert S. Karlsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The steep growth in the mobile data traffic has gained a lot of attention in recent years. This growth is mainly the result of emerging applications, multimedia services, and revolutions in the device technology. With current deployments and radio resources, operators will not be able to cope with the growing demands. LÄS MER

  4. 3. Modulation of cellular innate immune responses by lactobacilli

    Författare :Mattias Karlsson; Jana Jass; Robert Brummer; Gilbert Donders; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cytokines; immunomodulation; lactobacilli; probiotics; urinary tract infections; urothelium; Biology; Biologi;

    Sammanfattning : Lactobacillus is a genus of lactic acid bacteria frequently used as healthpromoting probiotics. Using probiotics to treat or prevent infections is a novel experimental approach with vast impact on future therapy. LÄS MER

  5. 4. Study of Six-Port Modulators and Demodulators for High-Speed Data Communications

    Författare :Joakim Östh; Shaofang Gong; Magnus Karlsson; Robert Weigel; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : There is an increasing demand for high-speed wireless data communications to support consumers’ need for, among other things, real time streaming of high definition video and fast file transfers. One radio architecture that has a potential to meet the increasing demand for high-speed data communications is a radio technique based on the six-port architecture. LÄS MER