### Abstract

We consider multicell multiuser MIMO systems with a very large number of antennas at the base station. We assume that the channel is estimated by using uplink training sequences, and we consider a physical channel model where the angular domain is separated into a finite number of directions. We analyze the so-called pilot contamination effect discovered in previous work, and show that this effect persists under the finite-dimensional channel model that we consider. We further derive closed-form bounds on the achievable rate of uplink data transmission with maximum-ratio combining, for a finite and an infinite number of base station antennas.

Original language | English |
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Title of host publication | IEEE International Conference on Acoustics, Speed and Signal Processing (ICASSP) |

Publisher | Institute of Electrical and Electronics Engineers (IEEE) |

ISBN (Electronic) | 978-1-4577-0539-7 |

DOIs | |

Publication status | Published - 12 Jul 2011 |

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## Cite this

Ngo, H. Q., Larsson, E. G., & Marzetta, T. L. (2011). Analysis of the pilot contamination effect in very large multicell multiuser MIMO systems for physical channel models, In

*IEEE International Conference on Acoustics, Speed and Signal Processing (ICASSP)*Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICASSP.2011.5947131