Analysis of pilot decontamination based on power control

Laura Cottatellucci, Ralf R. Müller, Mikko Vehkaperä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

47 Citations (Scopus)

Abstract

A subspace method for channel estimation is proposed for asymmetric antenna array systems. The so-called pilot contamination problem reported in [1] is found to be due to the linearity of channel estimation in [2]. We show that it does not occur in cellular systems with power control and power-controlled handoff when the nonlinear channel estimation method proposed in this paper is used. Power-control hand-off is needed to guarantee separability between signal and interference subspaces. We derive the transmission conditions for subspace separability based on free probability and perturbation theory.
Original languageEnglish
Title of host publicationIEEE 77th Vehicular Technology Conference, VTC Spring
ISBN (Electronic)978-1-4673-6337-2
DOIs
Publication statusPublished - 1 Dec 2013
MoE publication typeA4 Article in a conference publication
Event2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013 - Dresden, Germany
Duration: 2 Jun 20135 Jun 2013

Publication series

SeriesIEEE Vehicular Technology Conference
ISSN1550-2252

Conference

Conference2013 IEEE 77th Vehicular Technology Conference, VTC Spring 2013
CountryGermany
CityDresden
Period2/06/135/06/13

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Keywords

  • Channel estimation
  • Massive MIMO
  • Multiple antennas
  • Multiple-input multiple-output (MIMO) systems
  • Principal component analysis
  • Spread-spectrum

Cite this

Cottatellucci, L., Müller, R. R., & Vehkaperä, M. (2013). Analysis of pilot decontamination based on power control. In IEEE 77th Vehicular Technology Conference, VTC Spring [6691891] IEEE Vehicular Technology Conference https://doi.org/10.1109/VTCSpring.2013.6691891