Search for dissertations about: "bandwidth"

Showing result 1 - 5 of 719 swedish dissertations containing the word bandwidth.

2. 1. Limitations on efficiency, size and bandwidth of small antennas

   Author : Daniel Nyberg; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; log-periodic antennas; Small antennas; folded dipoles; radiation Q; fundamental limitations; bandwidth;

   Abstract : The allocated space in a mobile phone for the antennas has become smaller and smaller following the size reduction of the mobile phones themselves and the integration of more functions in them. At the same time new communication systems are being planned where such small antennas also need to be wideband (UWB systems) or have multiple ports (MIMO systems). READ MORE

4. 2. Fair Treatment of Multicast Sessions and Their Receivers : Incentives for more efficient bandwidth utilization

   Author : Patrik Österberg; Tingting Zhang; Kirk Martinez; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; bandwidth allocation; cost allocation; fairness; multicast; Computer and systems science; Data- och systemvetenskap;

   Abstract : Tjänster för strömmad media stiger kraftigt i popularitet, samtidigt som utbudet av denna typ av tjänster ökar. Internet protocol television (IPTV) med standardupplösning levereras redan till många hem, och högupplöst IPTV kommer att bli vanligt inom en relativt snar framtid. READ MORE

5. 3. Bandwidth Efficient IPTV Distribution : On Error Resilience and Fast Channel Change

   Author : Ulf Jennehag; Tingting Zhang; Stefan Pettersson; Nikolaus Färber; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; IPTV distribution; Computer and systems science; Data- och systemvetenskap;

   Abstract : Television is now changing its traditional distribution forms to being distributed digitally over broadband networks. The recent development of broadband Internet connectivity has made the transition to Internet Protocol Television (IPTV) possible. READ MORE

6. 4. Modeling, Implementation and Evaluation of IP Network Bandwidth Measurement Methods

   Author : Andreas Johnsson; Mats Björkman; Bob Melander; Gábor Vattay; Mälardalens högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Computer networks; Bandwidth measurement; Wireless networks; Computer science; Datavetenskap; Datavetenskap;

   Abstract : Internet has gained much popularity among the public since the mid 1990's and is now an integrated part of our society. A large range of high-speedbroadband providers and the development of new and more efficient Internet applications increase the possibilities to watch movies and live TV, use IP-telephony and share files over the Internet. READ MORE

7. 5. Fundamental Bounds on Performance of Periodic Electromagnetic Radiators and Scatterers

   Author : Andrei Ludvig-Osipov; B. Lars G. Jonsson; Christophe Caloz; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Q-factor; bandwidth; antenna arrays; periodic structures; physical bounds; physical limitations; Electrical Engineering; Elektro- och systemteknik;

   Abstract : In this thesis, the optimal bandwidth performance of periodic electromagnetic radiators and scatterers is studied. The main focus is on the development and application of methods to obtain fundamental physical bounds, relating geometrical parameters, frequency bandwidth, efficiency and radiation characteristics of periodic electromagnetic structures. READ MORE