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On the Performance of Spatially Correlated Large Antenna Arrays for Millimeter-Wave Frequencies

Neil, CT; Garcia-Rodriguez, A; Smith, PJ; Dmochowski, PA; Masouros, C; Shaft, M; (2018) On the Performance of Spatially Correlated Large Antenna Arrays for Millimeter-Wave Frequencies. IEEE Transactions on Antennas and Propagation , 66 (1) pp. 132-148. 10.1109/TAP.2017.2759842. Green open access

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Abstract

A spatially correlated large antenna array operating at millimeter-wave (mmWave) frequencies is considered. Based on a Saleh-Valenzuela channel model, closed-form expressions of the 3-D spatial correlation (SC) for wide, narrow, and Von Mises power elevation spectra (PESs) are analytically derived. The effects of the PES on the convergence to massive multiple-input-multiple-output properties are then illustrated by defining and deriving a diagonal dominance metric. Numerically, the effects of antenna element mutual coupling (MC) are shown on the effective SC, eigenvalue structure, and mmWave user rate for different antenna topologies. It is concluded that although MC can significantly reduce SC for side-by-side dipole antenna elements, the change in antenna effective gain (and, therefore, signal-to-noise ratio) caused by MC becomes a dominating effect and ultimately determines the antenna array performance. The user rate of an mmWave system with hybrid beamforming, using an orthogonal matching pursuit (OMP) algorithm, is then shown for different antenna topologies with dipole and cross-polarized (x-pol) antenna elements. It is seen that even for small numbers of radio frequency chains, the OMP algorithm works well relative to the fully digital case for channels with high SC, such as the x-pol antenna array.

Type: Article
Title: On the Performance of Spatially Correlated Large Antenna Arrays for Millimeter-Wave Frequencies
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TAP.2017.2759842
Publisher version: https://doi.org/10.1109/TAP.2017.2759842
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Technology, Engineering, Electrical & Electronic, Telecommunications, Engineering, Correlation, millimeter wave propagation, MIMO systems, mutual coupling, Propagation Measurements, Cellular Communications, Fading Correlation, Correlation Models, Channel Models, Capacity, 5G, Communication, Challenges
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10051974
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