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Title:
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Resource allocation between feedback and forward links: impact on system performance and CSI
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Author:
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Sacristán Murga, Daniel; Pascual Iserte, Antonio; Tradacete, Pedro
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. A&MP - Grup de Processament d'Arrays i Sistemes Multicanal |
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Abstract:
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The performance of multiple-input multiple-output (MIMO) communication
systems is greatly increased by exploiting channel state
information (CSI) for the transmitter design. In systems where
channel reciprocity does not hold, a limited feedback link can be
used to send the CSI from the receiver to the transmitter. However,
the resources for the feedback link come at the expense of
resources for the forward link. This paper studies the trade-off between
the accuracy of the feedback information and system performance.
The optimum resource allocation is presented as the solution
to an analytic equation for different beamforming transmission
schemes to maximize the worst-case performance, in a framework
including both time-division duplexing (TDD) and frequencydivision
duplexing (FDD). |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal::Processament del senyal en les telecomunicacions
-Signal theory (Telecommunication)
-MIMO systems
-Comunicacions mòbils, Sistemes de |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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