Array Configuration Effect on the Spatial Correlation of MU-MIMO Channels in NLoS Environments
Paper in proceedings, 2020

In this paper, three different base-station antenna (BSA) configurations are compared in terms of inter-user spatial correlation in a two dimensional (2D) non-line-of-sight (NLoS) environment. The three configurations are: (i) a regular uniform linear array (ULA); (ii) a periodic sparse array; and (iii) an aperiodic sparse array. Electromagnetic modeling of the NLoS channel is proposed where scatterers are considered as resonant dipoles confined in clusters of scatterers (CoSs). While the probability of facing highly correlated user-equipments (UEs) in a multi-user multiple-input multiple-output (MU-MIMO) system is decreasing as the richness of mutipath increases, the sparsity (increased inter-element spacing) is seen to be capable of reducing this probability as well. This is due to the larger spatial variations experienced by the sparse array. Moreover, the results show that further improvement can be achieved by deploying an aperiodic distribution of antenna elements into the sparse antenna aperture.

Multi-user multiple-input multiple-output (MU- MIMO)

spatial correlation

sparse array

non-line-of-sight (NLoS)

Author

Navid Amani

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

A. Farsaei

Eindhoven University of Technology

Ulf Gustavsson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Thomas Eriksson

Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

F. M.J. Willems

Eindhoven University of Technology

Marianna Ivashina

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Rob Maaskant

Chalmers, Electrical Engineering, Communication and Antenna Systems

2020 14th European Conference on Antennas and Propagation (EuCAP)

2164-3342 (ISSN)

14th European Conference on Antennas and Propagation
Copenhagen, Denmark,

Silicon-based Ka-band massive MIMO antenna systems for new telecommunication services (SILIKA)

European Commission (Horizon 2020), 2016-09-01 -- 2020-08-31.

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

Driving Forces

Innovation and entrepreneurship

DOI

10.23919/EuCAP48036.2020.9135446

More information

Created

7/21/2020