Sökning: "generalized beamforming"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden generalized beamforming.

  1. 1. Estimation and Performance Analysis of Wireless Multiple Antenna Communication Channels

    Författare :Mikael Coldrey; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capacity; Wireless communications; performance bounds; distributed sources; generalized beamforming; channel estimation; MIMO; training;

    Sammanfattning : The focus of this thesis is on channel estimation in wireless communication systems that employ multiple antennas.The thesis is divided into two parts, whereof the first part addresses theproblem of parameter estimation of distributed sources. Due to, e.g. LÄS MER

  3. 2. Robust broadband beamforming and digital filter design : methods and applications

    Författare :Sven Nordebo; Luleå tekniska universitet; []
    Nyckelord :;

    Sammanfattning : This doctoral thesis consists of a summary and six parts corresponding to six different papers. There are two published and three submitted journal papers, and one research report. The summary will highlight the main results and emphasize the interrelationships between different parts. LÄS MER

  4. 3. 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

  5. 4. Resource Allocation in Multi-Antenna Communication Systems with Limited Feedback

    Författare :David Hammarwall; Björn Ottersten; David Gesbert; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

    Sammanfattning : The use of multiple transmit antennas is considered a key ingredient to significantly improve the spectral efficiency of wireless communication systems beyond that of currently employed systems. Transmit beamforming schemes have been proposed to exploit the spatial characteristics of multi-antenna radio channels; that is, multiple-input single-output (MISO) channels. LÄS MER

  7. 5. Optimal Transmit Strategies for Multi-antenna Systems with Joint Sum and Per-antenna Power Constraints

    Författare :Le Phuong Cao; Tobias Oechtering; Skoglund Mikael; Martin Schubert; KTH; []
    Nyckelord :Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Nowadays, wireless communications have become an essential part of our daily life. During the last decade, both the number of users and their demands for wireless data have tremendously increased. Multi-antenna communication is a promising solution to meet this ever-growing traffic demands. LÄS MER