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On Antenna Array Out-of-Band Emissions

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On Antenna Array Out-of-Band Emissions. / Anttila, Lauri; Brihuega, Alberto; Valkama, Mikko.

julkaisussa: IEEE Wireless Communications Letters, Vuosikerta 8, Nro 6, 01.12.2019.

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Anttila, Lauri ; Brihuega, Alberto ; Valkama, Mikko. / On Antenna Array Out-of-Band Emissions. Julkaisussa: IEEE Wireless Communications Letters. 2019 ; Vuosikerta 8, Nro 6.

Bibtex - Lataa

@article{c31cc29fe9c74913a99a7a20c86704c9,
title = "On Antenna Array Out-of-Band Emissions",
abstract = "We substantiate and extend recent research on the behavior of the out-of-band emissions in antenna array transmitters. Specifically, with multi-user precoding, we show that the emissions are always beamformed in the directions of the intended receivers, contrary to some claims in the recent literature. Moreover, while also other spurious directions exist, we show that the emissions are always strongest in the directions of the intended receivers. We also show that power amplifiers with mutually different nonlinear phase characteristics will reduce the beamforming gain of the unwanted emissions, with the gain approaching the noncoherent combining limit as the phase deviations are increased.",
keywords = "antenna array, beamforming, precoding, power amplifier, nonlinearity, distortion, out-of-band emission.",
author = "Lauri Anttila and Alberto Brihuega and Mikko Valkama",
year = "2019",
month = "12",
day = "1",
doi = "10.1109/LWC.2019.2934442",
language = "English",
volume = "8",
journal = "IEEE Wireless Communications Letters",
issn = "2162-2337",
publisher = "Institute of Electrical and Electronics Engineers",
number = "6",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - On Antenna Array Out-of-Band Emissions

AU - Anttila, Lauri

AU - Brihuega, Alberto

AU - Valkama, Mikko

PY - 2019/12/1

Y1 - 2019/12/1

N2 - We substantiate and extend recent research on the behavior of the out-of-band emissions in antenna array transmitters. Specifically, with multi-user precoding, we show that the emissions are always beamformed in the directions of the intended receivers, contrary to some claims in the recent literature. Moreover, while also other spurious directions exist, we show that the emissions are always strongest in the directions of the intended receivers. We also show that power amplifiers with mutually different nonlinear phase characteristics will reduce the beamforming gain of the unwanted emissions, with the gain approaching the noncoherent combining limit as the phase deviations are increased.

AB - We substantiate and extend recent research on the behavior of the out-of-band emissions in antenna array transmitters. Specifically, with multi-user precoding, we show that the emissions are always beamformed in the directions of the intended receivers, contrary to some claims in the recent literature. Moreover, while also other spurious directions exist, we show that the emissions are always strongest in the directions of the intended receivers. We also show that power amplifiers with mutually different nonlinear phase characteristics will reduce the beamforming gain of the unwanted emissions, with the gain approaching the noncoherent combining limit as the phase deviations are increased.

KW - antenna array

KW - beamforming

KW - precoding

KW - power amplifier

KW - nonlinearity

KW - distortion

KW - out-of-band emission.

U2 - 10.1109/LWC.2019.2934442

DO - 10.1109/LWC.2019.2934442

M3 - Article

VL - 8

JO - IEEE Wireless Communications Letters

JF - IEEE Wireless Communications Letters

SN - 2162-2337

IS - 6

ER -