Search for dissertations about: "COS"

Showing result 1 - 5 of 124 swedish dissertations containing the word COS.

  2. 1. CryptoNET : Generic Security Framework for Cloud Computing Environments

    Author : Abdul Ghafoor Abbasi; Sead Muftic; Antonio F. Gómez Skarmeta; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Generic Security Object; CryptoNET; Security; Framework; Information technology; Informationsteknologi; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : The area of this research is security in distributed environment such as cloud computing and network applications. Specific focus was design and implementation of high assurance network environment, comprising various secure and security-enhanced applications. READ MORE

  4. 2. Cooperative Communications : Link Reliability and Power Efficiency

    Author : Tafzeel ur Rehman Ahsin; Ben Slimane; Xavier Lagrange; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cooperative Communications; Link Reliability; Power Efficiency; Energy Efficiency; Network Coding; Cooperative Relaying; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Abstract : Demand for high data rates is increasing rapidly for the future wireless generations, due to the requirement ofubiquitous coverage for wireless broadband services. More base stations are needed to deliver these services, in order tocope with the increased capacity demand and inherent unreliable nature of wireless medium. READ MORE

  5. 3. Coding and Iterative Decoding of Concentrated Multi-level Codes for the Rayleigh Fading Channel

    Author : Omar Al-Askary; Ben Slimane; Joachim Hagenauer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signal processing; Signalbehandling;

    Abstract : In this thesis we present the concept of concatenated multilevel codes. These codes are a combination of generalized concatenated codes with multilevel coding. The structure of these codes is simple and relies on the concatenation of two or more codes of shorter length. READ MORE

  6. 4. TDMA for Low Sampling Rate IR-UWB Receivers

    Author : Muhammad Adeel Ansari; Svante Signell; Ramir Eghbali; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : In UWB communication sampling plays a key role in detection of the transmitted data. There are various methods of data transmission and detection at the receiver. Mostly, the detection methods are based on frequency domain methods. READ MORE

  7. 5. Hybrid cellular-broadcasting infrastructure systems : radio resource management issues

    Author : Aurelian Bria; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Telecommunication; Telekommunikation;

    Abstract : This thesis addresses the problem of low-cost multicast delivery of multimedia content in future mobile networks. The trend towards reuse of existing infrastructure for cellular and broadcasting for building new systems is challenged, with respect to the opportunities for low cost service provision and scalable deployment of networks. READ MORE