Search for dissertations about: "key block"

Showing result 16 - 20 of 120 swedish dissertations containing the words key block.

  2. 16. Ultra-Reliable Short-Packet Communications: Fundamental Limits and Enabling Technologies

    Author : Johan Östman; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ultra-reliable low-latency; variablelength stop-feedback; imperfect CSI; channel estimation; HARQ.; joint detection and decoding; short packets; Block-fading channels; multiuser massive MIMO;

    Abstract : The paradigm shift from 4G to 5G communications, anticipated to enable ultra-reliable low-latency communications (URLLC), will enforce a radical change in the design of wireless communication systems. Unlike in 4G systems, where the main objective is to provide a large transmission rate, in URLLC, as implied by its name, the objective is to enable transmissions with low latency and, simultaneously, very high reliability. READ MORE

  4. 17. The Key to Intelligent Transportation Systems: Identity and Credential Management for Secure and Privacy-Preserving Vehicular Communication Systems

    Author : Mohammad Khodaei; Panagiotis Papadimitratos; Antonio Lioy; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Security; Privacy; Vehicular PKI; VPKI; Identity and Credential Management; Vehicular Communications; VANETs; Availability; Scalability; Resilient; Efficiency; Micro-service; Container Orchestration; Cloud;  Certificate Revocation List; Location Privacy; Mix-zones; Pseudonymity; Anonymity; Untraceability; Pseudonym Transition; Pseudonym Unlinkability.; Säkerhet; personlig integritet; identitet- och behörighetsuppgifter; tillgänglighet; skalbarhet; motståndskraftig; effektivitet; moln; pseudonymitet; anonymitet; ospårbarhet.; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Vehicular Communication (VC) systems can greatly enhance road safety and transportation efficiency and enable a variety of applications providing traffic efficiency, environmental hazards, road conditions and infotainment. Vehicles are equipped with sensors and radars to sense their surroundings and external environment, as well as with an internal Controller Area Network (CAN) bus. READ MORE

  5. 18. Performance Assessment of Cooperative Relay Networks with Advanced Radio Transmission Techniques

    Author : Hoc Phan; Blekinge Tekniska Högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative communications; cognitive relay networks; multiple-input multiple-output MIMO ; space-time block codes; spatial diversity;

    Abstract : In the past decade, cooperative communications has been emerging as a pertinent technology for the current and upcoming generations of mobile communication infrastructure. The indispensable benefits of this technology have motivated numerous studies from both academia and industry on this area. READ MORE

  6. 19. Synthesis of a key derivative of glycosylphosphatidylinositol substances and synthesis of spacer glycosides for use in the formation of glycoconjugates and of self-assembled monolayer surfaces

    Author : Liselotte Öhberg; Thomas Norberg; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic Chemistry; organisk kemi;

    Abstract : The first chapter of this thesis describes glycosylation strategies for obtaining derivatives of 2-amino-2-deoxy-a-D-glucopyranosyl-(1-->6)-D-myo-inositol, a key building block for synthesis of glycosylphosphatidylinositol anchor substances and also proposed to be part of a second messenger for insulin.The second chapter describes the synthesis of bifunctional oligoethylene glycol spacers and glycosylation of these for use in formation of glycoconjugates. READ MORE

  7. 20. Past dynamics of a marine-terminating glacier in lower Borgarfjörður, west Iceland - Analyses of glaciotectonic sediments and landforms

    Author : Thorbjorg Sigfusdottir; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; glacier dynamics; marine-terminating glacier; glaciomarine processes; thrust-block moraines; glaciotectonics; micromorphology; Early Holocene; Late Weichselian; Iceland;

    Abstract : Large and complete sections through glacial landforms formed in subaqueous environments are rare, impeding our knowledge of their internal composition and the processes responsible for their formation. Following the last deglaciation of the Icelandic Ice Sheet (IIS), a marine-terminating outlet glacier advanced out of the fjord of Borgarfjörður resulting in large-scale glaciotectonic deformation of glaciomarine sediments. READ MORE