On the outage performance of line-of-sight massive MIMO with a fixed-length uniform linear sparse array

A. Farsaei, N. Amani, A. Alvarado, F.M.J. Willems, U. Gustavsson, R. Maaskant

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Abstract

Increasing the inter-element spacing of a uniform linear sparse array results in reducing the mutual coupling and simplifying the heat dissipation control of the array. However, increasing the inter-element spacing may result in the appearance of grating lobes in the field-of-view (FoV). In this paper, 0.05-outage capacity is used as the performance metric to optimize the inter-element spacing for a given array size in line-of-sight scenarios. For the case of two users, we propose to increase the inter-element spacing as long as the 0.05-outage capacity does not reduce more than 1% compared to the capacity achieved when the two users have orthogonal channel vectors. Radiated power at the base station is adjusted to have the same effective isotropic radiated power for different arrays. Simulation results for an array size of 40λ show that for FoVs of 60° to 120°, the inter-element spacing can be increased from 0.5λ to more than 1.14λ.

Original languageEnglish
Title of host publicationProceedings of the 2019 9th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2019
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages345-348
Number of pages4
ISBN (Electronic)978-1-7281-0566-6
DOIs
Publication statusPublished - 1 Sep 2019
Event9th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2019 - Granada, Spain
Duration: 9 Sep 201913 Sep 2019

Conference

Conference9th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2019
CountrySpain
CityGranada
Period9/09/1913/09/19

Keywords

  • Line-of-sight
  • outage
  • uniform linear sparse array

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    Farsaei, A., Amani, N., Alvarado, A., Willems, F. M. J., Gustavsson, U., & Maaskant, R. (2019). On the outage performance of line-of-sight massive MIMO with a fixed-length uniform linear sparse array. In Proceedings of the 2019 9th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2019 (pp. 345-348). [8870356] Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/APWC.2019.8870356