MIMO Systems under Limited Feedback: A Signal Processing Perspective
We study the performance of multiple-antenna systems under finite-rate feedback of some function of the current channel realization from a channel-aware receiver to the transmitter. Our analysis is based on a novel geometric paradigm whereby the feedback information is modeled as a source distributed over a Riemannian manifold. While the right singular vectors of the channel matrix and the subspace spanned by them are located on the traditional Stiefel and Grassmann surfaces, the optimal input covariance matrix is located on a new manifold of positive semi-definite matrices - specified by rank and trace constraints - called the Pn manifold. T…
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Produktdetails
- ISBN: 978-3-659-71892-2
- EAN: 9783659718922
- Produktnummer: 37598213
- Verlag: LAP Lambert Academic Publishing
- Sprache: Englisch
- Erscheinungsjahr: 2015
- Seitenangabe: 176 S.
- Masse: H22.0 cm x B15.0 cm x D1.1 cm 280 g
- Abbildungen: Paperback
- Gewicht: 280
Über den Autor
Dr. Krishnamachari is a quantitative researcher trading systematic investment strategies for a leading Wall Street firm. His research in diverse topics within mathematics, engineering and social sciences has been widely cited. He holds a PhD in electrical engineering.
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