CDI Precoding for Massive MIMO
Conference: SCC 2015 - 10th International ITG Conference on Systems, Communications and Coding
02/02/2015 - 02/05/2015 at Hamburg, Germany
Proceedings: SCC 2015
Pages: 6Language: englishTyp: PDF
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Authors:
Neumann, David; Joham, Michael; Utschick, Wolfgang (Associate Institute for Signal Processing, Technische Universität München, 80290 Munich, Germany)
Abstract:
We discuss the benefits of a linear precoding stage based solely on second order information of the channel with application to massive MIMO networks. Specifically, the proposed channel distribution information (CDI) precoding is used to completely suppress the interference caused by pilot contamination, thus leading to a significant gain in spectral efficiency for pilotcontamination limited massive MIMO systems. When applied to a corparative multi-cell system, we can show that the proposed precoding approach is a generalization of the pilot-contamination precoding proposed by Ashikhmin and Marzetta in 2012.