Search for dissertations about: "communications"

Showing result 1 - 5 of 1230 swedish dissertations containing the word communications.

  1. 1. Secure emergency communications of emergency responders : a case study of Kemi municipality in Finland

    Author : Heidi Hartikainen; Luleå tekniska universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; emergency management; information security; emergency response; emergency communications; secure communications; Information technology - Computer science; Informationsteknik - Datorvetenskap; Data och Systemvetenskap; Computer and Systems Science;

    Abstract : Emergency response is highly time-critical and information dependent: every moment counts and organizations need to access various information that supports their decision making and informs them about the scale and location of the emergency, the damages, and the availability of human and physical resources. This kind information can originate from many different places and the situation can be stressful as there is a need to communicate quickly, reliably and accurately within their own organization, but also inter-organizationally. READ MORE

  2. 2. Cooperative Communications : Link Reliability and Power Efficiency

    Author : Tafzeel ur Rehman Ahsin; Ben Slimane; Xavier Lagrange; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative Communications; Link Reliability; Power Efficiency; Energy Efficiency; Network Coding; Cooperative Relaying; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Demand for high data rates is increasing rapidly for the future wireless generations, due to the requirement ofubiquitous coverage for wireless broadband services. More base stations are needed to deliver these services, in order tocope with the increased capacity demand and inherent unreliable nature of wireless medium. READ MORE

  3. 3. Contagious Communications : The role of emotion in viral marketing

    Author : Elsie Margaretha Botha; Esmail Salehi-Sangari; Matthew Robson; KTH; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Viral marketing; Emotion; eWOM; Social Media; Affect; Industriell ekonomi och organisation; Industrial Engineering and Management;

    Abstract : The “connection generation” craves interaction with and connection to vast social networks through the sharing of information, photos, opinions, entertainment and news. This sharing comes in the form of electronic word-of-mouth or eWOM, and provides marketing and communication managers with an unparalleled opportunity to reach a large number of consumers quickly. READ MORE

  4. 4. Seamless Communications

    Author : Lennart Isaksson; []

    Abstract : The evolution of today’s wireless technologies and small hand-held devices has enabled the handling of the trade-off between mobility and performance. Things have, however, become more complex. Users demand high performance when using small and resource-efficient devices. READ MORE

  5. 5. Multiantenna Cellular Communications : Channel Estimation, Feedback, and Resource Allocation

    Author : Emil Björnson; Björn Ottersten; Mats Bengtsson; Marios Kountouris; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; channel estimation; limited feedback; multicell communications; resource allocation;

    Abstract : The use of multiple antennas at base stations and user devices is a key component in the design of cellular communication systems that can meet the capacity demands of tomorrow. The downlink transmission from base stations to users is particularly limiting, both from a theoretical and a practical perspective, since user devices should be simple and power-efficient, and because many applications primarily create downlink traffic (e. READ MORE