Sökning: "Channel network concept"

Visar resultat 21 - 25 av 41 avhandlingar innehållade orden Channel network concept.

  1. 21. Measuring and circumventing Internet censorship

    Författare :Philipp Winter; Stefan Lindskog; Joss Wright; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tor; censorship; circumvention; anonymity; Computer Science; Datavetenskap;

    Sammanfattning : An ever increasing amount of governments, organisations, and companies employ Internet censorship in order to filter the free flow of information.  These efforts are supported by an equally increasing number of companies focusing on the development of filtering equipment.Only what these entities consider right can pass the filters. LÄS MER

  3. 22. Cell-Free Massive MIMO : Scalability, Signal Processing and Power Control

    Författare :Giovanni Interdonato; Erik G. Larsson; Hien Quoc Ngo; Àngel Lozano; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The fifth generation of mobile communication systems (5G) is nowadays a reality. 5G networks are been deployed all over the world, and the first 5G-capable devices (e.g., smartphones, tablets, wearable, etc. LÄS MER

  4. 23. Analysis of Cellular and Cell-Free Massive MIMO with Rician Fading

    Författare :Özgecan Özdogan; Emil Björnson; Erik G. Larsson; Sofie Pollin; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The data traffic in cellular networks has grown at an exponential pace for decades. This trend will most probably continue in the future, driven by new innovative applications. One of the key enablers of future cellular networks is the massive MIMO technology. A massive MIMO base station is equipped with a massive number (e. LÄS MER

  5. 24. Power Control for Multi-Cell Massive MIMO

    Författare :Amin Ghazanfari; Emil Björnson; Erik G. Larsson; Mikael Johansson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The cellular network operators have witnessed significant growth in data traffic in the past few decades. This growth occurs due to the increases in the number of connected mobile devices, and further, the emerging mobile applications developed for rendering video-based on-demand services. LÄS MER

  7. 25. Limited Feedback Information in Wireless Communications : Transmission Schemes and Performance Bounds

    Författare :Thanh Tùng Kim; Mikael Skoglund; Hesham El Gamal; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diversity-multiplexing tradeoff; Large deviation analysis; Limited feedback; MIMO channels; Relay channels; Telecommunication; Telekommunikation;

    Sammanfattning : This thesis studies some fundamental aspects of wireless systems with partial channel state information at the transmitter (CSIT), with a special emphasis on the high signal-to-noise ratio (SNR) regime. The first contribution is a study on multi-layer variable-rate communication systems with quantized feedback, where the expected rate is chosen as the performance measure. LÄS MER