Blind pilot decontamination

Müller R, Cottatellucci L, Vehkapera M (2014)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2014

Journal

IEEE Journal of Selected Topics in Signal Processing Institute of Electrical and Electronics Engineers (IEEE)

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 8

Pages Range: 773-786

Article Number: 6756975

Journal Issue: 5

DOI: 10.1109/JSTSP.2014.2310053

Abstract

A subspace projection to improve channel estimation in massive multi-antenna systems is proposed and analyzed. Together with power-controlled hand-off, it can mitigate the pilot contamination problem without the need for coordination among cells. The proposed method is blind in the sense that it does not require pilot data to find the appropriate subspace. It is based on the theory of large random matrices that predicts that the eigenvalue spectra of large sample covariance matrices can asymptotically decompose into disjoint bulks as the matrix size grows large. Random matrix and free probability theory are utilized to predict under which system parameters such a bulk decomposition takes place. Simulation results are provided to confirm that the proposed method outperforms conventional linear channel estimation if bulk separation occurs.

Authors with CRIS profile

Ralf Müller Professur für Informationsübertragung

Involved external institutions

Institut Eurécom (EURECOM) FR France (FR) Aalto University Espoo FI Finland (FI)

How to cite

APA:

Müller, R., Cottatellucci, L., & Vehkapera, M. (2014). Blind pilot decontamination. IEEE Journal of Selected Topics in Signal Processing, 8(5), 773-786. https://doi.org/10.1109/JSTSP.2014.2310053

MLA:

Müller, Ralf, Laura Cottatellucci, and Mikko Vehkapera. "Blind pilot decontamination." IEEE Journal of Selected Topics in Signal Processing 8.5 (2014): 773-786.

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