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Group-Blind Detection with Very Large Antenna Arrays in the Presence of Pilot Contamination

Citation Author(s):
Giovanni Geraci, Tony Q.S. Quek, Moe Z. Win
Submitted by:
Guido Ferrante
Last updated:
19 March 2016 - 4:25am
Document Type:
Document Year:
Presenters Name:
Guido Carlo Ferrante



Massive MIMO is, in general, severely affected by pilot contamination. As opposed to traditional detectors, we propose a group-blind detector that takes into account the presence of pilot contamination. While sticking to the traditional structure of the training phase, where orthogonal pilot sequences are reused, we use the excess antennas at each base station to partially remove interference during the uplink data transmission phase. We analytically derive the asymptotic SINR achievable with group-blind detection, and confirm our findings by simulations. We show, in particular, that in an interference-limited scenario with one dominant interfering cell, the SINR can be doubled compared to non-group-blind detection.

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