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        Low-Complexity Energy Efficiency Optimization with Statistical CSI in Two-Hop MIMO Systems

        Author
        Zappone, Alessio
        Cao, Pan
        Jorswieck, Eduard
        Attention
        2299/19851
        Abstract
        Energy-efficient resource allocation in a single-user, amplify-and-forward (AF), relay-assisted, multiple-input-multiple-output (MIMO) system is considered in this paper. Previous results in this area assume that perfect CSI is available for at least one of the source-relay and relay-destination channels. Instead, the case in which statistical CSI is available for both the source-relay and relay-destination channel is tackled in this letter. Using fractional programming theory and the alternating maximization algorithm, low-complexity source and relay precoding is performed, subject to quality-of-service (QoS) and power constraints.
        Publication date
        2014-11-30
        Published in
        IEEE Signal Processing Letters
        Published version
        https://doi.org/10.1109/LSP.2014.2337014
        Other links
        http://hdl.handle.net/2299/19851
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