Sökning: "Channel feedback"

Visar resultat 16 - 20 av 103 avhandlingar innehållade orden Channel feedback.

1. 16. On Tailbiting Codes from Convolutional Codes

   Författare :Per Ståhl; Institutionen för elektro- och informationsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; computer technology; Systems engineering; Teknik; Technological sciences; encoder inverse; systematic feedback encoder; state complexity; trellis; tailbiting termination method; tailbiting code; channel coding; convolutional code; Data- och systemvetenskap; Informatics; systems theory; Informatik; systemteori;

   Sammanfattning : Tailbiting is a method to terminate convolutional codes into block codes. We call these block codes tailbiting codes. This thesis focuses on the encoding of tailbiting codes. The tailbiting method is carefully investigated. LÄS MER

3. 17. Semantic Self-monitoring in Speech. Using Real-time Speech Exchange to Investigate the Use of Auditory Feedback for Self-comprehension

   Författare :Andreas Lind; Kognitionsvetenskap; []
   Nyckelord :HUMANIORA; HUMANITIES; Speech production; self-monitoring; voice manipulation; self-comprehension; sense of agency; auditory feedback; Real-time Speech Exchange; internal monitoring;

   Sammanfattning : This thesis investigates speech production and self-monitoring by using a newly constructed Real-time Speech Exchange (RSE) system. This system makes it possible to covertly manipulate the auditory feedback that participants receive of their own voice. LÄS MER

4. 18. Adaptive Modulation and Coding in Wireless Communications with Feedback

   Författare :Sorour Falahati; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : We study link adaptation techniques which are suitable for the future packet-based wireless communication systems, where in particular, flat Rayleigh fading channels are assumed. Firstly, an adaptive coding scheme based on Rate Compatible Convolutional (RCC) codes is proposed. LÄS MER

5. 19. Feedback and adjoint based control of boundary layer flows

   Författare :Mattias Chevalier; Dan Henningson; Jean-Marc Chomaz; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Applied mechanics; fluid and plasma; mechanical engineering; Teknisk mekanik; Engineering mechanics; Teknisk mekanik;

   Sammanfattning : Linear and nonlinear optimal control have been investigated in transitional channel and boundary layer .ows. The flow phenomena that we study are governed by the incompressible Navier–Stokes equations and the main aim with the control is to prevent transition from laminar to turbulent flows. LÄS MER

7. 20. Interference Alignment with Imperfect Channel Knowledge and Secrecy Constraints

   Författare :Zhao Wang; Mikael Skoglund; Ming Xiao; Sheng Yang; KTH; []
   Nyckelord :Informations- och kommunikationsteknik; Information and Communication Technology;

   Sammanfattning : In this thesis, the degrees of freedom (DOF) of wireless networks are studied with imperfect channel state information at transmitters (CSIT) and/or secrecy constraints. Different interference alignment schemes are proposed to establish the DOF lower bound for a variety of wireless networks. LÄS MER