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Can Hardware Distortion Correlation be Neglected When Analyzing Uplink SE in Massive MIMO?

Citation Author(s):
Luca Sanguinetti, Jakob Hoydis
Submitted by:
Emil Bjornson
Last updated:
20 June 2018 - 8:42am
Document Type:
Poster
Document Year:
2018
Event:
Presenters Name:
Emil Björnson
Paper Code:
TP-R2

Abstract 

Abstract: 

This paper analyzes how the distortion created by hardware impairments in a multiple-antenna base station affects the uplink spectral efficiency (SE), with focus on Massive MIMO. The distortion is correlated across the antennas, but has been often approximated as uncorrelated to facilitate (tractable) SE analysis. To determine when this approximation is accurate, basic properties of the distortion correlation are first uncovered. Then, we focus on third-order non-linearities and prove analytically and numerically that the correlation can be neglected in the SE analysis when there are many users. In i.i.d. Rayleigh fading with equal signal-to-noise ratios, this occurs when having five users.

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