Sökning: "Cross-layer"

Visar resultat 1 - 5 av 31 avhandlingar innehållade ordet Cross-layer.

1. 1. Cross-layer Aspects in OFMDA Systems : Feedback, Scheduling and Beamforming

   Författare :Patrick Svedman; Björn Ottersten; Ana I. Pérez-Neira; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

   Sammanfattning : This thesis mainly studies the downlink of a wireless multiuser system, where the transmitter has limited knowledge about the communication channels of the users. Key techniques to improve the performance of such systems are, for instance, multiple antennas, multiuser diversity and orthogonal frequency-division multiple access (OFDMA). LÄS MER

3. 2. A Cross-Layer Perspective on Transport Protocol Performance in Wireless Networks

   Författare :Stefan Alfredsson; Anna Brunström; Christer Åhlund; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Wireless networks; 4G; cross-layer interaction; TCP; UDP; emulation; performance evaluation; optimizations; Computer Science; Datavetenskap;

   Sammanfattning : Communication by wireless technologies has seen a tremendous growth in the last decades. Mobile phone technology and wireless broadband solutions are rapidly replacing the last-hop wireline connectivity for telephones and Internet access. LÄS MER

4. 3. Cross-Layer Energy-Efficient Mobile Network Design

   Författare :Peiliang Chang; Guowang Miao; Jens Zander; Eduard Jorswieck; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; green mobile networks; energy efficiency; base station sleeping; resource allocation; mobile edge computing; interference coordination; NOMA; gröna mobilnätverk; energieffektivitet; basstationssömn; resursallokering; mobil kantnodsberäkning; störningssamordning; Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : To assure the sustainable development of mobile networks, it is crucial to improve their energy efficiency. This thesis is devoted to the design of energy-efficient mobile networks. A cross-layer design approach is adopted. LÄS MER

5. 4. Cross-layer optimization of wireless multi-hop networks

   Författare :Pablo Soldati; Mikael Johansson; Peter Marbach; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

   Sammanfattning : The interest in wireless communications has grown constantly for the past decades, leading to an enormous number of applications and services embraced by billions of users. In order to meet the increasing demand for mobile Internet access, several high data-rate radio networking technologies have been proposed to offer wide area high-speed wireless communications, eventually replacing fixed (wired) networks for many applications. LÄS MER

7. 5. On Cross-Layer Design and Resource Scheduling in Wireless Networks

   Författare :Pablo Soldati; Mikael Johansson; P.R. P.R. Kumar; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

   Sammanfattning : Wireless technology has revolutionized the world of communications, enabling ubiquitous connectivity and leading every year to several new applications and services embraced by billions of users. To meet the increasing demand for high data-rate wireless services, standardization bodies and vendors released a new generation of standard-based devices capable to offer wide area high-speed and high-quality wireless coverage. LÄS MER