Pilot Coordination in CDI Precoded Massive MIMO Systems

Konferenz: WSA 2016 - 20th International ITG Workshop on Smart Antennas
09.03.2016 - 11.03.2016 in München, Deutschland

Tagungsband: ITG-Fb. 261: WSA 2016

Seiten: 7Sprache: EnglischTyp: PDF

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Zoppi, Samuele (Chair of Communication Networks, Technical University of Munich, Munich, Germany)
Joham, Michael; Neumann, David; Utschick, Wolfgang (Associated Institute for Signal Processing, Technical University of Munich, Munich, Germany)

Pilot contamination severely degrades the achievable rates in massive MIMO systems. To resolve the problem, many channel state information (CSI) and channel distribution information (CDI) methods were developed. This paper presents a CDI based pilot coordination method that leads to a considerable improvement in the achievable sum rate. It also shows that pilot assignment can drastically affect sum rate performance and describes a method that avoids worst-case conditions.