Sökning: "distributed oscillators."

Hittade 4 avhandlingar innehållade orden distributed oscillators..

  1. 1. Phase Noise in Communication Systems--Modeling, Compensation, and Performance Analysis

    Författare :M Reza Khanzadi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multiple antennas; distributed oscillators.; colored phase noise; free-running oscillator; Bayesian Cramér-Rao bound; Oscillator phase noise; phase noise model; channel capacity; mean square error; capacity achieving distribution; Wiener process; extended Kalman filter smoother; maximum a posteriori estimator; phase-locked loop;

    Sammanfattning : The continuous increase in demand for higher data rates due to applications with massive number of users motivates the design of faster and more spectrum efficient communication systems. In theory, the current communication systems must be able to operate close to Shannon capacity bounds. LÄS MER

  3. 2. Synchronization and Communication Results in Safety-Critical Real-Time Systems

    Författare :Henrik Lönn; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; scheduling; TDMA; fault tolerance; membership agreement; safety-critical; atomic broadcast; embedded systems; clock synchronization; distributed real-time systems;

    Sammanfattning : A growing number of industrial control applications employ computer control to provide enhanced functionality and reduced cost. Many of these applications are safety-critical and require fault-tolerant techniques to provide an adequate level of safety. LÄS MER

  4. 3. Titled and graded anisotropy FePt and FePtCu thin films for the application of hard disk drive and spin torque oscillators

    Författare :Yeyu Fang; Johan Åkerman; Anna Delin; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physics; Fysik;

    Sammanfattning :  The FePt and FePtCu thin films with graded anisotropy and titled anisotropy are utilized to solve both the magnetic recording ‘‘trilemma’’ of the hard disk drives (HDDs) and the large field operation problem of spin torque oscillators (STOs). We have successfully realized the FePtCu thin films with graded anisotropy. LÄS MER

  5. 4. Network Synchronization and Control Based on Inverse Optimality : A Study of Inverter-Based Power Generation

    Författare :Taouba Jouini; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; networked systems; coupled oscillator synchronization; inverse optimal robust control; power systems; inverter control;

    Sammanfattning : This thesis dwells upon the synthesis of system-theoretical tools to understand and control the behavior of nonlinear networked systems. This work is at the crossroads of three topics: synchronization in coupled high-order oscillators, inverse optimal control and the application of inverter-based power systems. LÄS MER