Sökning: "feedback"

Visar resultat 26 - 30 av 1604 avhandlingar innehållade ordet feedback.

  1. 26. Limited Feedback Information in Wireless Communications : Transmission Schemes and Performance Bounds

    Författare :Thanh Tùng Kim; Mikael Skoglund; Hesham El Gamal; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Diversity-multiplexing tradeoff; Large deviation analysis; Limited feedback; MIMO channels; Relay channels; Telecommunication; Telekommunikation;

    Sammanfattning : This thesis studies some fundamental aspects of wireless systems with partial channel state information at the transmitter (CSIT), with a special emphasis on the high signal-to-noise ratio (SNR) regime. The first contribution is a study on multi-layer variable-rate communication systems with quantized feedback, where the expected rate is chosen as the performance measure. LÄS MER

  3. 27. On Robot Feedback from Range Sensors : Reliable Control by Active Reduction of Uncertainty and Ambiguities

    Författare :Jonas Nygårds; John Hallam; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; robot gripping and docking; LQG-feedback; posture estimation; Gaussian sum; optronic sensing; sheet of light range camera; time-of-flight laser; specular reflection s; multiple scattering; range ghosts ; active reduction of ambiguities; reliability; uncertainty; tolerances;

    Sammanfattning : This thesis is on modelling and experimental tests when non contact sensing isused for feedback control in robotics. The motion of the robot is to be controlled relative to objects in the surrounding workspace during operations like gripping/docking, surface following, shape measuring etc. LÄS MER

  4. 28. Student experience of vocational becoming in upper secondary vocational education and training. Navigating by feedback

    Författare :Martina Wyszynska Johansson; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; upper secondary vocational education and training; barn- och fritidsprogrammet; vocational becoming; vocational knowing; vocational concepts; feedback; students experienced curriculum; service work; security officer; learner readiness;

    Sammanfattning : This doctoral thesis explores student experience of vocational becoming, particularly the navigational role of feedback in the process for Swedish upper secondary vocational students. Vocational becoming is explored as conflating the development of vocational knowing and formation of a vocational identity. LÄS MER

  5. 29. Multiantenna Cellular Communications : Channel Estimation, Feedback, and Resource Allocation

    Författare :Emil Björnson; Björn Ottersten; Mats Bengtsson; Marios Kountouris; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; channel estimation; limited feedback; multicell communications; resource allocation;

    Sammanfattning : The use of multiple antennas at base stations and user devices is a key component in the design of cellular communication systems that can meet the capacity demands of tomorrow. The downlink transmission from base stations to users is particularly limiting, both from a theoretical and a practical perspective, since user devices should be simple and power-efficient, and because many applications primarily create downlink traffic (e. LÄS MER

  7. 30. Learning With Selective Feedback : Effects on Performance and Coding of Unknown Outcomes

    Författare :Ebba Elwin; Peter Juslin; Robin Hogarth; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cognitive science; Kognitionsforskning; Psychology; psykologi;

    Sammanfattning : In experiential learning, one important source of information is the feedback that people receive on the outcomes of their decisions. Typically, however, feedback is systematically absent for many decisions and the actual experience of people may therefore be highly selective. LÄS MER