Sökning: "capacity constraint"

Visar resultat 21 - 25 av 49 avhandlingar innehållade orden capacity constraint.

  1. 21. Influence of Channel Estimation on Wireless Communication System Performance

    Författare :Patrik Bohlin; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Many wireless communication systems today employ receivers that use channel estimation as an integral part of the receiver chain. Two sides of this problem are studied in this thesis: Impact of channel estimation on low complexity receivers for multi antenna and CDMA systems, and the performance of systems based on superimposed pilots and systems with peak power constraints. LÄS MER

  3. 22. Marginal Productivity Indices and Linear Programming Relaxations for Dynamic Resource Allocation in Queueing Systems

    Författare :Jianhua Cao; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Markov decision process; Indexability; Linear programming; Queueing theory; Optimization;

    Sammanfattning : Many problems concerning resource management in modern communication systems can be simplified to queueing models under Markovian assumptions. The computation of the optimal policy is however often hindered by the curse of dimensionality especially for models that support multiple traffic or job classes. LÄS MER

  4. 23. Energy and Design Cost Efficiency for Streaming Applications on Systems-on-Chip

    Författare :Jun Zhu; Axel Jantsch; Twan Basten; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Streaming applications; Systems-on-chip; Synchronous dataflow; energy efficiency; buffer minimization; performance analysis; Informatics; computer and systems science; Informatik; data- och systemvetenskap;

    Sammanfattning : With the increasing capacity of today's integrated circuits, a number ofheterogeneous  system-on-chip (SoC)  architectures  in embedded  systemshave been proposed. In order to achieve energy and design cost efficientstreaming applications  on these  systems, new design  space explorationframeworks  and  performance  analysis  approaches are  required. LÄS MER

  5. 24. Novel Applications of Space-Time Processing for Wireless Systems

    Författare :Tommy Hult; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Space-time processing; Novel applications; Wireless communications;

    Sammanfattning : Space-time processing techniques have emerged as one of the most promising areas of research and development in wireless communications. Space-time processing signifies the signal processing performed on a system consisting of several antenna elements, whose signals are processed adaptively in order to exploit both the spatial (space) and temporal (time) dimensions of the radio channel. LÄS MER

  7. 25. Efficient Spectrum Utilization of Uhf Broadcast Band

    Författare :Lei Shi; Jens Zander; Ki Won Sung; Linda Dolye; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TV White Space; CellTV; UHF Band; Spectrum; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : The UHF band between 470-790 MHz, currently occupied by digital ter- restrial TV (DTT) distribution in Europe, is widely regarded as a premium spectrum band for providing mobile coverage. With the exponential increase in wireless data traffic in recent years, there has been growing interests in gaining access to this spectrum band for wireless broadband services. LÄS MER