Sökning: "channel model"

Visar resultat 11 - 15 av 668 avhandlingar innehållade orden channel model.

  1. 11. Massive MIMO for Dependable Communication

    Författare :Sara Willhammar; Kommunikationsteknologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Channel characterisation; Channel measurements; Channel modeling; Industrial automation; Industry 4.0; Internet-of-Things; Massive MIMO; mMTC; Reliability; URLLC;

    Sammanfattning : Cellular communication is constantly evolving; currently 5G systems are being deployed and research towards 6G is ongoing. Three use cases have been discussed as enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable low-latency communication (URLLC). LÄS MER

  3. 12. Measurement Based Channel Characterization and Modeling for Vehicle-to-Vehicle Communications

    Författare :Taimoor Abbas; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vehicle-to-vehicle communications; IEEE 802.11p; Channel measurements; Channel modeling; propagation modeling; MIMO; intelligent transportation systems;

    Sammanfattning : Vehicle-to-Vehicle (V2V) communication is a challenging but fast growing technology that has potential to enhance traffic safety and efficiency. It can also provide environmental benefits in terms of reduced fuel consumption. LÄS MER

  4. 13. Going digital : Business model innovation in omni-channel retailing

    Författare :Milan Jocevski; Niklas Arvidsson; Antonio Ghezzi; Maxim Miterev; Hannu Saarijärvi; KTH; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Industriell ekonomi och organisation; Industrial Economics and Management;

    Sammanfattning : Over the last ten years, digital technologies have had immense effect on the way we live and work, on organizational forms, and on industrial trends. These effects have not left retail industries and their various actors untouched, but have rather forced them to adapt to the changing environment. LÄS MER

  5. 14. Modeling of Multiple-Input Multiple-Output Radio Propagation Channels

    Författare :Kai Yu; KTH; []
    Nyckelord :Antenna Array; Wireless Communications; MIMO Channel Model; MIMO Channel Measurements; MIMO Channel Capacity;

    Sammanfattning : In recent years, multiple-input multiple-output (MIMO)systems appear to be very promising since they can provide highdata rates in environments with sucient scattering byexploiting the spatial domain. To design a real MIMO wirelesssystem and predict its performance under certain circumstances,it is necessary to have accurate MIMO wireless channel modelsfor dierent scenarios. LÄS MER

  7. 15. Multiantenna Cellular Communications : Channel Estimation, Feedback, and Resource Allocation

    Författare :Emil Björnson; Björn Ottersten; Mats Bengtsson; Marios Kountouris; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; channel estimation; limited feedback; multicell communications; resource allocation;

    Sammanfattning : The use of multiple antennas at base stations and user devices is a key component in the design of cellular communication systems that can meet the capacity demands of tomorrow. The downlink transmission from base stations to users is particularly limiting, both from a theoretical and a practical perspective, since user devices should be simple and power-efficient, and because many applications primarily create downlink traffic (e. LÄS MER