Sökning: "Beamforming transmitter"

Visar resultat 21 - 25 av 27 avhandlingar innehållade orden Beamforming transmitter.

  1. 21. Performance Trade-offs for Ultra-Reliable Low-Latency Communication Systems

    Författare :Sebastian Schiessl; James Gross; Mikael Skoglund; Cenk Gursoy; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : In this dissertation, we consider wireless systems for ultra-reliable low-latency communication (URLLC). URLLC systems are required for example in industrial closed loop control systems, where data must be transmitted within a short target delay of at most a few milliseconds. LÄS MER

  3. 22. Channel Estimation in Wireless Communication Systems Employing Multiple Antennas

    Författare :Mikael Coldrey; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multiple antennas; capacity; channel estimation; non-parametric estimation; training; distributed sources; MIMO; Wireless communications; superimposed pilots; performance bounds;

    Sammanfattning : Antennas that are able to adaptively direct the transmitted (and received) energy are of great interest in future wireless communication systems. The directivity implies reduced transmit power and interference, and also a potential for increased capacity. LÄS MER

  4. 23. Performance Aspects in Millimeter-Wave Wireless  Networks

    Författare :Cristian Tatino; Di Yuan; Nikolaos Pappas; Ilaria Malanchini; Ewe Lutz; Marian Codreanu; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The ever-growing data rate and comunications demand pose more challenges for the upcoming generations of mobile communications, i.e., fifth generation (5G) and beyond. To deal with these challenges, several solutions can be deployed, e. LÄS MER

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

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

    Sammanfattning : 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. LÄS MER

  7. 25. Algorithms and Proofs of Concept for Massive MIMO Systems

    Författare :Joao Vieira; Kommunikationsteknologi; []
    Nyckelord :massive MIMO; Algorithms; Testbeds; Deep Learning; Generalized Method of Moments;

    Sammanfattning : This thesis focuses on algorithms and proofs of concepts in the area of wireless systems operating with a large number of antennas, especially at the base station side.The first studied topic concerns the design and implementation of massive multiple-input multiple-output (MIMO) testbeds, primarily for communications. LÄS MER