Low-complexity robust MISO downlink precoder optimization for the limited feedback case

We consider the design of the linear precoder for a multiple-input single-output (MISO) downlink in a system that employs limited feedback using Grassmannian quantization. The goal is to minimize the outage probability of a target signal-to-interference-and noise ratio (SINR) under a transmitted pow...

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Vydané v:2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) s. 3108 - 3112
Hlavní autori: Medra, Mostafa, Wing-Kin Ma, Davidson, Timothy N.
Médium: Konferenčný príspevok..
Jazyk:English
Vydavateľské údaje: IEEE 01.04.2015
Predmet:
beamforming
Broadcast channel
chance constraints
Energy management
Feeds
Grassmannian limited feedback
Interference
Noise
Probabilistic logic
quality-of-service
Receivers
Robustness
ISSN:1520-6149
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Popis
Shrnutí:We consider the design of the linear precoder for a multiple-input single-output (MISO) downlink in a system that employs limited feedback using Grassmannian quantization. The goal is to minimize the outage probability of a target signal-to-interference-and noise ratio (SINR) under a transmitted power constraint. By approximating the outage constraint by a zero-outage region, employing a semidefinite relaxation, and applying an extension of the S-Lemma, the problem is converted into a quasi-convex problem. Insights into the structure of the solution of that problem generate an alternate design formulation that provides greater robustness in the presence of significant uncertainties and has a quasi-closed form solution.
ISSN:1520-6149
DOI:10.1109/ICASSP.2015.7178543