Sökning: "heuristic techniques"

Visar resultat 1 - 5 av 52 avhandlingar innehållade orden heuristic techniques.

  1. 1. Utilizing Channel State Information in Space-Time Coding : Performance Limits and Transmission Techniques

    Författare :George Jöngren; KTH; []
    Nyckelord :Beamforming; Channel feedback; MIMO; Space-time coding; Wireless Communication;

    Sammanfattning : This thesis deals with performance limits and transmissiontechniques for a wireless communication link where at least thetransmitter is equipped with an antenna array and moreover hasaccess to possibly imperfect channel state information.An antenna array on the transmit side provides the systemwith an extra spatial dimension that can be utilized for codingboth in the spatial as well as the temporal domain. LÄS MER

  3. 2. Reduction Techniques for Finite (Tree) Automata

    Författare :Lisa Kaati; Parosh Aziz Abdulla; Frank Drewes; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Finite automata; tree automata; bisimulation; minimization; simulation; composed bisimulation; composed simulation; Datavetenskap; Computer Science;

    Sammanfattning : Finite automata appear in almost every branch of computer science, for example in model checking, in natural language processing and in database theory. In many applications where finite automata occur, it is highly desirable to deal with automata that are as small as possible, in order to save memory as well as excecution time. LÄS MER

  4. 3. Testing and Logic Optimization Techniques for Systems on Chip

    Författare :Tomas Bengtsson; Shashi Kumar; Zebo Peng; Jaan Raik; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Today it is possible to integrate more than one billion transistors onto a single chip. This has enabled implementation of complex functionality in hand held gadgets, but handling such complexity is far from trivial. The challenges of handling this complexity are mostly related to the design and testing of the digital components of these chips. LÄS MER

  5. 4. Performance Prediction and Improvement Techniques for Parallel Programs in Multiprocessors

    Författare :Magnus Broberg; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The performance of a computer system is important. One way of improving performance is to use multiprocessors with several processors that can work in parallel. Where multiprocessors are used, the programs must also be parallel in order to achieve high performance. LÄS MER

  7. 5. Offline Task Scheduling in a Three-layer Edge-Cloud Architecture

    Författare :Ayeh Mahjoubi; Karl-Johan Grinnemo; Arunselvan Ramaswamy; Alessandro Papadopoulos; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; task offloading; task scheduling; edge computing; internet of things; optimization techniques; heuristics; meta-heuristics; Computer Science; Datavetenskap;

    Sammanfattning : Internet of Things (IoT) devices are increasingly being used everywhere, from the factory to the hospital to the house to the car. IoT devices typically have limited processing resources, so they must rely on cloud servers to accomplish their tasks. Thus, many obstacles need to be overcome while offloading tasks to the cloud. LÄS MER