Sökning: "Sven Jacobsson"

Hittade 5 avhandlingar innehållade orden Sven Jacobsson.

  1. 1. Cold trapping and reinjection techniques for gas chromatography-mass spectrometry

    Detta är en avhandling från Stockholm

    Författare :Sven Jacobsson; Stockholms universitet.; [1984]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  2. 2. Massive MIMO with Low-Resolution Data Converters: Algorithm Design and Performance Evaluation

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Sven Jacobsson; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Massive multiuser multiple-input multiple-output (MIMO) is foreseen to be a key technology in next-generation (5G) cellular communication systems, due to huge potential gains in spectral efficiency and energy efficiency. In this thesis, we investigate the performance of massive MIMO systems, which operate over a Rayleigh-fading channel, for the case when the base station (BS) is equipped with low-resolution data converters. LÄS MER

  3. 3. Massive Multi-Antenna Communications with Low-Resolution Data Converters

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Sven Jacobsson; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; orthogonal frequency-division multiplexing; channel estimation; quantization; linear precoding; convex optimization; nonlinear precoding; linear combing; hardware impairments; analog-to-digital converter; beamforming; Massive multi-user multiple-input multiple-output; digital-to-analog converter;

    Sammanfattning : Massive multi-user (MU) multiple-input multiple-output (MIMO) will be a core technology in future cellular communication systems. In massive MU-MIMO systems, the number of antennas at the base station (BS) is scaled up by several orders of magnitude compared to traditional multi-antenna systems with the goals of enabling large gains in capacity and energy efficiency. LÄS MER

  4. 4. Clinical and experimental studies on total hip arthroplasty

    Detta är en avhandling från Linköping : Linköpings universitet

    Författare :Sven-Arne Jacobsson; Linköpings universitet.; Linköpings universitet.; [1995]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE; MEDICIN;

    Sammanfattning : In a 12-year follow-up study, a low-friction, metal-on-plastic hip prosthetic system (Charnley) was compared with a high-friction, metal-on-metal prosthetic system (McKeeFarrar) in a consecutive series of 169 patients, mean age 67 at the start. Satisfactory results were reported in 92 percent of the patients. LÄS MER

  5. 5. Den sjunde världsdelen Västgötar och Västergötland 1646-1771. En identitetshistoria

    Detta är en avhandling från Stockholm : Institutionen för litteraturvetenskap och idéhistoria

    Författare :Benny Jacobsson; Stockholms universitet.; [2008]
    Nyckelord :HUMANIORA; HUMANITIES; regional identity; national identity; concept of identity; patria; nation; encomium; topography; dissertation; student nation; Västergötland; Uppsala; Åbo; Skara; Jacob Chronander; Algot Scarin; Sven Wilskman; Johan Falck; Sven Hof; Paul Ricoeur; HUMANITIES and RELIGION History and philosophy subjects History subjects History of science and ideas; HUMANIORA och RELIGIONSVETENSKAP Historisk-filosofiska ämnen Historieämnen Idé- o lärdomshistoria; History of Ideas; idéhistoria;

    Sammanfattning : This thesis considers regional identity in early-modern Sweden, taking its case from the province (landskap) of Västergötland 1646–1771. The aim is to investigate verbal expressions of regional identity. LÄS MER