Sökning: "multiple access"

Visar resultat 16 - 20 av 493 avhandlingar innehållade orden multiple access.

  1. 16. Aspects of Control Signaling in Wireless Multiple Access Systems

    Författare :Reza Moosavi; Erik G. Larssopn; Mikael Sternad; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : From its first appearance, wireless communications has changed thelife for many people worldwide. Currently, more than half of the world's population are using wireless devices for various purposes on a daily basis. LÄS MER

  3. 17. Radio Resource Allocation and Utilization in Multiple Radio Access Networks

    Författare :Georgios Koudouridis; Gunnar Karlsson; Frank H. P. Fitzek; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Meeting in a sustainable way the demands of an unprecedented explosive growth in the number of connected devices and mobile data traffic, next-generation mobile networks are expected to make flexible use of spectrum and provide higher capacity by a denser deployment of radio access network infrastructure. In addition, the allocation and the utilisation of radio access resources should improve spectrum usage efficiency and keep energy consumption low, implying the capability to effectively exploit the denser deployment of radio accesses and the co-existence of radio accesses belonging to one or multiple radio access technologies. LÄS MER

  4. 18. Efficient concurrent data structure access parallelism techniques for increasing scalability

    Författare :Adones Rukundo; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; FIFO queue; parallelism; performance modelling; design framework; semantic relaxation; Data structure; multi-access; lock free; performance analysis; counter; concurrency; search tree.; stack; multi-core processor; priority queue;

    Sammanfattning : Multi-core processors have revolutionised the way data structures are designed by bringing parallelism to mainstream computing. Key to exploiting hardware parallelism available in multi-core processors are concurrent data structures. LÄS MER

  5. 19. Quasi-subscribers in the Swedish Mobile Phone Market: The Phenomenon and Determinant Factors

    Författare :Tsani Annafari; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; quasi-subscribers; diffusion process; multiple subscriptions; inter-operator multiple subscriptions; intra-operator multiple subscriptions; Mobile phone;

    Sammanfattning : This thesis investigates the problematic inaccuracies of mobile phone density as a measure on access and use of mobile phones. The inaccuracies are presumably caused by the presence of quasi-subscribers - mobile phone users with multiple active SIM cards or subscriptions - that exaggerate the actual number of mobile phone users. LÄS MER

  7. 20. Medium access control for vehicular ad hoc networks

    Författare :Katrin Sjöberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; vehicle-to-vehicle communications; SOTDMA; self-organizing TDMA; cooperative system; C-ITS; V2V; ETSI ITS-G5; traffic safety; ISO CALM M5; STDMA; VANET; IEEE 802.11p; V2X; MAC; CSMA; cooperative ITS; medium access control; WAVE; DSRC; vehicular ad hoc networks; scalability; real-time communications;

    Sammanfattning : Cooperative intelligent transport systems (C-ITS), where vehicles cooperate by exchanging messages wirelessly to avoid, for example, hazardous road traffic situations, receive a great deal of attention throughout the world currently. Many C-ITS applications will utilize the wireless communication technology IEEE 802. LÄS MER