Search for dissertations about: "multi-hop scenarios"

Showing result 1 - 5 of 10 swedish dissertations containing the words multi-hop scenarios.

  2. 1. Enabling Multimedia Services over Wireless Multi-Hop Networks

    Author : Marcel Cavalcanti de Castro; Andreas Kassler; Torsten Braun; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Wireless Multi-hop Networks; Mobile Ad-hoc Networks; Wireless Mesh Networks; Voice over IP; Session Initiation Protocol; Peer-to-Peer Overlay Networks; Computer science; Datavetenskap; Datavetenskap; Computer Science;

    Abstract : With the constant development of wireless technologies, the usageof wireless devices tends to increase even more in the future.Wireless multi-hop networks (WMNs) have emerged as a keytechnology to numerous potential scenarios, ranging from disasterrecovery to wireless broadband internet access. READ MORE

  4. 2. Modeling and design of multi-hop energy efficient wireless networks for control applications

    Author : Piergiuseppe Di Marco; Karl Henrik Johansson; Sanjay Shakkottai; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

    Abstract :   Energy efficiency is essential for many industrial and commercial wireless network applications. In this thesis, we propose an analytical framework to model and design protocols for multi-hop wireless networks for industrial control and automation. READ MORE

  5. 3. Interference Alignment with Imperfect Channel Knowledge and Secrecy Constraints

    Author : Zhao Wang; Mikael Skoglund; Ming Xiao; Sheng Yang; KTH; []
    Keywords : Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : In this thesis, the degrees of freedom (DOF) of wireless networks are studied with imperfect channel state information at transmitters (CSIT) and/or secrecy constraints. Different interference alignment schemes are proposed to establish the DOF lower bound for a variety of wireless networks. READ MORE

  6. 4. Coexistence and Energy Efficiency in Wireless Networks

    Author : Ioannis Glaropoulos; Viktoria Fodor; Falco Dressler; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Dynamic spectrum access has been recently proposed to increase the utilization of the licensed spectrum bands, and support the constantly growing volumes of mobile traffic in the modern society. At the same time, the increasing demand for wireless connectivity, as a result of the rapid emergence of innovative wireless and mobile services, has led to the deployment of various wireless technologies in the open ISM bands. READ MORE

  7. 5. Mobility and Multi-channel Communications in Low-power Wireless Networks

    Author : António Gonga; Mikael Johansson; Riku Jäntti; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mobility; Multi-channel communications; Neighbor Discovery; MAC Protocols; Low-power Wireless Networks; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The prospect of replacing existing fixed networks with cheap, flexible and evenmobile low-power wireless network has been a strong research driver in recent years.However, many challenges still exist: reliability is hampered by unstable and burstycommunication links; the wireless medium is getting congested by an increasingnumber of wireless devices; and life-times are limited due to difficulties in developingefficient duty-cycling mechanisms. READ MORE