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Showing result 1 - 5 of 76 swedish dissertations matching the above criteria.

  2. 1. Packetized speech transmission - combatting the packet loss problem

    Author : Jonas Lindblom; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bounded support; voice over packet packetized speech; spectrum prediction; Gaussian mixture modeling; frame erasure; speech coding; packet loss concealment; sinusoidal modeling;

    Abstract : .... READ MORE

  4. 2. Coding Speech for Packet Networks

    Author : Jonas Lindblom; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; packet loss concealment; voice over IP; speech coding; harmonic modeling; vector quantization; sinusoidal modeling; Gaussian mixture modeling; bounded support; frame erasure; variable dimension;

    Abstract : The topic of this thesis is speech coding for packet networks. Problems related to the use of packet networks for voice communication are addressed. Real-time voice communication is for example very delay sensitive; if the total end-to-end delay in a telephone session grows large, it is perceived as annoying. READ MORE

  5. 3. Improving TCP Performance in Wireless Multi-hop Networks : Design of Efficient Forwarding and Packet Processing Techniques

    Author : Jonas Karlsson; Andreas Kassler; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TCP; transport protocols; packet aggregation; multi path routing; wireless mesh networks; Computer Science; Datavetenskap;

    Abstract : Due to the high availability of cheap hardware, wireless multi-hop networks and in particular Wireless Mesh Networks (WMNs) are becoming popular in more and more contexts. For instance, IEEE 802.11 based WMNs have already started to be deployed as means to provide Internet access to rural areas in the developing world. READ MORE

  6. 4. Transport-Layer Performance for Applications and Technologies of the Future Internet

    Author : Per Hurtig; Anna Brunström; Saverio Mascolo; Karlstads universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TCP; SCTP; transport protocols; loss recovery; packet reordering; congestion control; performance evaluation; Computer Science; Datavetenskap;

    Abstract : To provide Internet applications with good performance, the transport protocol TCP is designed to optimize the throughput of data transfers. Today, however, more and more applications rely on low latency rather than throughput. Such applications can be referred to as data-limited and are not appropriately supported by TCP. READ MORE

  7. 5. Energy Saving vs. Performance: Trade-offs in Optical Networks

    Author : Pawel Wiatr; Paolo Monti; Josep Solé-Pareta; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; energy-efficiency; optical networks; RWA; side-effects; device reliability performance; network performance; operational cost; benefits; loss; Informations- och kommunikationsteknik; Information and Communication Technology;

    Abstract : The energy consumption of communication networks is continuously growing. Many energy saving approaches have been proposed at the device, system, and network level. The most promising way to address this problem is to utilize photonic technologies as much as possible thanks to their low energy consumption per bit performance. READ MORE