Analysis of the pilot contamination effect in very large multicell multiuser MIMO systems for physical channel models

@article{Ngo2011AnalysisOT,
  title={Analysis of the pilot contamination effect in very large multicell multiuser MIMO systems for physical channel models},
  author={Hien Quoc Ngo and Thomas L. Marzetta and Erik G. Larsson},
  journal={2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)},
  year={2011},
  pages={3464-3467}
}
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… CONTINUE READING
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