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Decontaminating pilots in massive MIMO systems | IEEE Conference Publication | IEEE Xplore

Decontaminating pilots in massive MIMO systems


Abstract:

Pilot contamination is known to severely limit the performance of large-scale antenna (“massive MIMO”) systems due to degraded channel estimation. This paper proposes a t...Show More

Abstract:

Pilot contamination is known to severely limit the performance of large-scale antenna (“massive MIMO”) systems due to degraded channel estimation. This paper proposes a twofold approach to this problem. First we show analytically that pilot contamination can be made to vanish asymptotically in the number of antennas for a certain class of channel fading statistics. The key lies in setting a suitable condition on the second order statistics for desired and interference signals. Second we show how a coordinated user-to-pilot assignment method can be devised to help fulfill this condition in practical networks. Large gains are illustrated in our simulations for even small antenna array sizes.
Date of Conference: 09-13 June 2013
Date Added to IEEE Xplore: 07 November 2013
Electronic ISBN:978-1-4673-3122-7

ISSN Information:

Conference Location: Budapest, Hungary

References

References is not available for this document.