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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
CitationSacristán Murga, D.; Pascual Iserte, A.; Tradacete, P. Resource allocation between feedback and forward links: impact on system performance and CSI. A: European Signal Processing Conference. "19th European Signal Processing Conference". Barcelona: 2011, p. 824-828.
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