Search for dissertations about: "3g cellular"

Showing result 1 - 5 of 11 swedish dissertations containing the words 3g cellular.

  2. 1. Mobile Multimedia Multicasting in Future Wireless Systems : A Hybrid Cellular-Broadcasting System Approach

    Author : Aurelian Bria; Jens Zander; Ralf Tönjes; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; 3G; DVB-H; wireless; multicasting; multimedia; broadcasting; Telecommunication; Telekommunikation;

    Abstract : This dissertation addresses the problem of providing a®ordable mobile mul-timedia services in wide area wireless networks. The approach is to con-sider novel system architectures, based on reusing and sharing of the ex-isting network infrastructure for cellular and terrestrial TV broadcastingsystems. READ MORE

  4. 2. Three problems with internetworking in cellular networks

    Author : Lars-Åke Larzon; []
    Keywords : ;

    Abstract : Over the last decade, cell phones have gone from providing the traditional interactive voice service to also include support for Internet services. Cellular networks that originally were designed for cost-efficient voice services supply low bandwidth, high error rates and long round-trip delays, which poorly fit the generous header sizes, lack of error tolerance and reliance on retransmissions of the Internet. READ MORE

  5. 3. Contributions to Confidentiality and Integrity Algorithms for 5G

    Author : Jing Yang; Nätverk och säkerhet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stream ciphers; 5G; Confidentiality and integrity algorithms; SNOW-V; SNOW-Vi; Local pseudorandom generators; SNOW 3G; ZUC-256; Linear cryptanalysis; Guess-and-determine attacks;

    Abstract : The confidentiality and integrity algorithms in cellular networks protect the transmission of user and signaling data over the air between users and the network, e.g., the base stations. READ MORE

  6. 4. Power Control for Multi-Cell Massive MIMO

    Author : Amin Ghazanfari; Emil Björnson; Erik G. Larsson; Mikael Johansson; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : The cellular network operators have witnessed significant growth in data traffic in the past few decades. This growth occurs due to the increases in the number of connected mobile devices, and further, the emerging mobile applications developed for rendering video-based on-demand services. READ MORE

  7. 5. Multi-Cell Massive MIMO: Power Control and Channel Estimation

    Author : Amin Ghazanfari; Emil Björnson; Erik G. Larsson; Dirk Slock; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Cellular network operators have witnessed significant growth in data traffic in the past few decades. This growth occurs due to the increase in the number of connected mobile devices, and further, the emerging mobile applications developed for rendering video-based on-demand services. READ MORE