Sökning: "Dynamic Spectrum Access"

Visar resultat 6 - 10 av 27 avhandlingar innehållade orden Dynamic Spectrum Access.

1. 6. Real-Time Spectrum Access in Heterogeneous Wireless Networks : Competition, Deployment and Pricing

   Författare :Saltanat Khamit; Jens Zander; Claes Tidestav; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning : The first decade of twenty-first century has witnessed the spread of innovative wireless technologies: novel wireless network architectures and services; operations in unlicensed bands, advanced mobile devices and smartphones. All these have pondered growing demand for wireless broadband services, so that more spectra are required. LÄS MER

3. 7. Dialectical Dimensions on Inclusive Education : Involving Students with Autism Spectrum Conditions

   Författare :Johanna Lüddeckens; Lotta Anderson; Daniel Östlund; Nina Klang; Malmö universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; inclusive education; autism spectrum conditions; inclusive school leadership; principals; dialectical approach; dilemma perspective; school organization.;

   Sammanfattning : Purpose: The aim of this essay and its contribution to research is to identify the opportunities, pitfalls, and dilemmas that can arise when inclusive education is organized with regard to students with ASC. In order to create more understanding of the situation for students with ASC in schools, the study focus on school leadership. LÄS MER

4. 8. Cognitive Radio Networks : Elements and Architectures

   Författare :Alexandru Popescu; Blekinge Tekniska Högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Cognitive radio network management; spectrum access; multiconstrained routing optimization; multi-dimensional adaptation; middleware;

   Sammanfattning : As mobility and computing becomes ever more pervasive in society and business, the non-optimal use of radio resources has created many new challenges for telecommunication operators. Usage patterns of modern wireless handheld devices, such as smartphones and surfboards, have indicated that the signaling traffic generated is many times larger than at a traditional laptop. LÄS MER

5. 9. Estimation and detection of transmission line characteristics in the copper access network

   Författare :Fredrik Lindqvist; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Digital subscriber line; DSL; line qualification; twisted-pair line; copper access network; cable modeling; crosstalk channel estimation; estimation; detection;

   Sammanfattning : The copper access-network operators face the challenge of developing and maintaining cost-effective digital subscriber line (DSL) services that are competitive to other broadband access technologies. The way forward is dictated by the demand of ever increasing data rates on the twisted-pair copper lines. LÄS MER

7. 10. Estimation of line properties in the copper access network

   Författare :Fredrik Lindqvist; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : The copper access-network operators face the challenge of developing and maintaining cost-effective digital subscriber line (DSL) services that are competitive to other broadband access technologies. The way forward is dictated by the demand of ever increasing data rates on the twisted-pair copper lines. LÄS MER