Pilot Contamination and Precoding in Multi-Cell TDD Systems

Abstract

This paper considers a multi-cell multiple antenna system with precoding used at the base stations for downlink transmission. Channel state information (CSI) is essential for precoding at the base stations. An effective technique for obtaining this CSI is time-division duplex (TDD) operation where uplink training in conjunction with reciprocity… (More)
DOI: 10.1109/TWC.2011.060711.101155

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