Sökning: "MAC delay"

Visar resultat 21 - 25 av 32 avhandlingar innehållade orden MAC delay.

  1. 21. Topics in Distributed Algorithms: On TDMA for Ad Hoc Networks and Coded Atomic Storage Algorithms

    Författare :Thomas Petig; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Fault-Tolerance; TDMA; Message Passing; Self-Stabilization; Distributed Algorithm; Wireless Networks; Time Division Multiple Access; Shared Memory; Privacy;

    Sammanfattning : Distributed algorithms run on a network of nodes. The nodes are runningconcurrently and are independent from each other. Furthermore, they have their own instructions and information. In this context, the challenges are to show thatthe algorithm is correct, regardless of computational, or communication delays. LÄS MER

  3. 22. Multihop Wireless Networks with Advanced Antenna Systems : An Alternative for Rural Communication

    Författare :Marvin Sánchez Garache; Jens Zander; Martha Steenstrup; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multihop Wirless Networks; Advanced Antenna Systems; Multiple Access Protocols; Spatial TDMA; CSMA CA; link-scheduling; power control; variable transmission rate; Telecommunication; Telekommunikation;

    Sammanfattning : Providing access to telecommunication services in rural areas is of paramount importance for the development of any country. Since the cost is the main inhibiting factor, any technical solution for access in sparsely populated rural areas has to be reliable, efficient, and deployable at low-cost. LÄS MER

  4. 23. Protocol Design for Control Applications using Wireless Sensor Networks

    Författare :Pangun Park; Karl Henrik Johansson; Anna Scaglione; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Elektroteknik;

    Sammanfattning : Given the potential benefits offered by wireless sensor networks(WSNs), they are becoming an appealing technology for process,manufacturing, and industrial control applications. In thisthesis, we propose a novel approach to WSN protocol design forcontrol applications. LÄS MER

  5. 24. Bounds on the maximum coding rate of multiple-access channels and feedback channels

    Författare :Rahul Devassy; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : We provide upper and lower bounds on the coding rate of multiple-access channels (MACs) and feedback channels.Traditional MACs have been extensively studied under the assumption of availability of perfect channel state information (CSI).In Paper A we relax this assumption for a Rayleigh block-fading MAC and provide bounds on the sum-rate capacity. LÄS MER

  7. 25. Cellular-Internet-of-Things Enablers: : A Techno-Economic Study of Wide Area Networks Connectivity and Platform Solutions

    Författare :Mohammad Istiak Hossain; Jan Markendahl; Jens Zander; Heikki Hämmäinen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; IoT; LPWAN; 5G; PRACH Contention Resolution; Multiplicity detection; Resource Allocation; Cost Structure.; Telecommunication; Telekommunikation; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Internet of Things (IoT) services are gradually attaining the expected service growth rate estimated by market actors. New connectivity paradigms, like the low-power wide-area network (LPWAN), have emerged to address the immediate challenges of IoT connectivity service. LÄS MER