Search for dissertations about: "communication system"

Showing result 16 - 20 of 1839 swedish dissertations containing the words communication system.

  2. 16. Energy-Efficient Digital Signal Processing for Fiber-Optic Communication Systems

    Author : Christoffer Fougstedt; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Digital Signal Processing; Forward Error Correction; Fiber Optic Communication; Application Specific Integrated Circuits; Communication Systems; Non-linear Impairment Mitigation;

    Abstract : Modern fiber-optic communication systems rely on complex digital signal processing (DSP) and forward error correction (FEC), which contribute to a significant amount of the over-all link power dissipation. Bandwidth demands are evergrowing and circuit technology scaling will due to fundamental reasons come to an end; energy-efficient design of DSP is thus necessary both from a sustainability perspective and a technical perspective. READ MORE

  4. 17. Overload Control and Performance Evaluation of Web Servers

    Author : Mikael Andersson; Institutionen för elektro- och informationsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; system; numerisk analys; Datalogi; control; systems; numerical analysis; Computer science; Content Adaptation; Admission Control; Overload Control; Web servers; Performance modeling; kontroll; Technological sciences; Teknik; Systems engineering; computer technology; Data- och systemvetenskap; Telecommunication engineering; Telekommunikationsteknik;

    Abstract : We are increasingly dependent on Internet as a large aspect of our daily life is now handled via online applications. Recent years we have seen several large-scale crises. This has made crisis-related research on Internet applications important. READ MORE

  5. 18. Communication quality : a conceptual approach focusing on classroom assistive listening devices

    Author : Johan Odelius; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk akustik; Engineering Acoustics;

    Abstract : In a classroom an assistive listening device (ALD) is a system of external microphones that transmit sound from a sound source directly to students' hearing aids. An ALD can be a microphone close to the mouth which transmits a voice directly to listeners' hearing aids. READ MORE

  6. 19. Hardware Distortion-Aware Beamforming for MIMO Systems

    Author : Yasaman Khorsandmanesh; Emil Björnson; Joakim Jaldén; Bo Göransson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Quantization-aware precoding; limited fronthaul capacity; sum rate maximization; millimeter wave mmWave ; beam coherence time; user equipment UE mobility.; Kvantiseringsmedveten förkodning; begränsad fronthaulkapacitet; summahastighetsmaximering; millimetervåg mmWave ; strålkoherens tid; användarutrustning UE mobilitet.; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : In the upcoming era of communication systems, there is an anticipated shift towards using lower-grade hardware components to optimize size, cost, and power consumption. This shift is particularly beneficial for multiple-input multiple-output (MIMO) systems and internet-of-things devices, which require numerous components and extended battery lifes. READ MORE

  7. 20. Wideband integrated circuits for optical communication systems

    Author : Stavros Giannakopoulos; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical interconnects; SiGe HBT; receiverfront-end; VCSEL driver; wideband amplifiers; data communication; InP DHBT; TIA; distributed amplifiers.;

    Abstract : The exponential growth of internet traffic drives datacenters to constantly improvetheir capacity. Several research and industrial organizations are aiming towardsTbps Ethernet and beyond, which brings new challenges to the field of high-speedbroadband electronic circuit design. READ MORE