Sökning: "Spectrum Opportunity"

Visar resultat 1 - 5 av 22 avhandlingar innehållade orden Spectrum Opportunity.

  1. 1. On Finding Spectrum Opportunities in Cognitive Radios : Spectrum Sensing and Geo-locations Database

    Författare :Mohamed Hamid; Ben Slimane; Niclas Björsell; Muhammad Imadua Rahman; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; COgnitive Radio; Dynamic Spectrum Access; Spectrum Opportunity; Spectrum Sensing; GEo-locations database;

    Sammanfattning : The spectacular growth in wireless services imposes scarcity in term of the available radio spectrum. A solution to overcome this scarcity is to adopt what so called cognitive radio based on dynamic spectrum access. LÄS MER

  3. 2. Structural chromosomal aberrations and neuropsychiatric disorders

    Författare :Tonnie Johannesson; Göteborgs universitet; []
    Nyckelord :Autism spectrum disorders; chromosomes; FISH; balanced; translocations;

    Sammanfattning : Infantile autism (IA) is a severe neurodevelopment disorder with a complex genetic predisposition. The underlying causes of autism are still not understood. LÄS MER

  4. 3. Towards Affordable Provisioning Strategies for Local Mobile Services in Dense Urban Areas : A Techno-economic Study

    Författare :Ashraf Awadelkarim Widaa Ahmed; Jan Markendahl; Ki Won Sung; Jens Zander; Bogdan Timus; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : The future mobile communication networks are expected to cope with growing local usage patterns especially in dense urban areas at more affordable deployment and operation expenses. Beyond leveraging small cell architectures and advanced radio access technologies; more radio spectrum are expected to be required to achieve the desired techno-economic targets. LÄS MER

  5. 4. Availability Assessment for Secondary Access in TV White Space

    Författare :Lei Shi; Jens Zander; Ki Won Sung; Tim Irnich; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : In recent years, the rapid growth in wireless data traffic has posed not only unique opportunities but also great challenges for the wireless industry. In order to meet the growing demand without excessive cost or energy consumption, one feasible option for the operators is to acquire more spectrum for wireless communication. LÄS MER

  7. 5. Aspects of Massive MIMO

    Författare :Marcus Karlsson; Erik G. Larsson; Emil Björnson; Kimmo Kansanen; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Next generation cellular wireless technology faces tough demands: increasing the throughput and reliability without consuming more resources, be it spectrum or energy. Massive mimo (Multiple-Input Multiple-Output) has proven, both in theory and practice, that it is up for the challenge. LÄS MER