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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Performance Analysis of AF Cooperative Communications with Imperfect Channel Information

Li, Heng-Kuan 28 June 2011 (has links)
Cooperative communications have received much attention recently, due to its ability to attain cooperation diversity. But when two nodes communicate via relays, it is difficult to get the perfect channel information, so relays must estimate their forward channel and backward channel in order to amplify the data to the destination. We investigate the effect of channel estimation error, and design the LMMSE estimator to estimate the channels, and also we consider the multi-relays to assist the whole system for training and data transmission. We propose the SNR gap ratio, outage probability, and the BER simulations for the analysis. Simulation shows that when using multi-relays, it can mitigate the effect of channel estimation errors in all of the amplify-and-forward (AF) scenarios.
2

Managing diversity in intergovernmental organisations

Peters, Björn A. January 2008 (has links)
Thesis (doctoral) - Universität, Marburg, 2007. / Includes bibliographical references and sources (p. 353-397)
3

Managing diversity in intergovernmental organisations

Peters, Bjorn A. January 2008 (has links)
Thesis (doctoral) - Universitat, Marburg, 2007. / Titre de l'écran-titre (visionné le Nov. 10, 2008). In Springer Link (Monographies électroniques). Versement en lot.

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