University of Oulu

M. Ma, N. Thanh Nguyen and M. Juntti, "Closed-Form Hybrid Beamforming Solution for Spectral Efficiency Upper Bound Maximization in mmWave MIMO-OFDM Systems," 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), Norman, OK, USA, 2021, pp. 1-5, doi: 10.1109/VTC2021-Fall52928.2021.9625163.

Closed-form hybrid beamforming solution for spectral efficiency upper bound maximization in mmWave MIMO-OFDM systems

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Author: Ma, Mengyuan1; Thanh Nguyen, Nhan1; Juntti, Markku1
Organizations: 1Centre for Wireless Communications (CWC), Uninvesity of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 9.8 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2023-03-23


Hybrid beamforming is considered a key enabler to realize millimeter wave (mmWave) multiple-input multiple-output (MIMO) communications due to its capability of considerably reducing the number of costly and power-hungry radio frequency chains in the transceiver. However, in mmWave MIMO orthogonal frequency-division multiplexing (MIMO-OFDM) systems, hybrid beamforming design is challenging because the analog precoder and combiner are required to be shared across the whole employed bandwidth. In this paper, we propose closed-form solutions to the problem of designing the analog precoder/combiner in a mmWave MIMO-OFDM system by maximizing the upper bound of the spectral efficiency. The closed-form solutions facilitate the design of analog beamformers while guaranteeing state-of-art performance. Numerical results show that the proposed algorithm attains a slightly improved performance with much lower computational complexity compared to the considered benchmarks.

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Series: IEEE Vehicular Technology Conference
ISSN: 1090-3038
ISSN-L: 1090-3038
ISBN: 978-1-6654-1368-8
ISBN Print: 978-1-6654-1369-5
Pages: 1 - 5
DOI: 10.1109/vtc2021-fall52928.2021.9625163
Host publication: 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall) Proceedings Virtual Conference 27-30 September 2021
Conference: IEEE Vehicular Technology Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
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