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Article

Robust Hybrid Beam-Forming for Non-Orthogonal Multiple Access in Massive MIMO Downlink

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Department of Computer Engineering, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
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Electrical Engineering Department, Higher Colleges of Technology, Ruwais Campus, Abu Dhabi 12389, United Arab Emirates
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Author to whom correspondence should be addressed.
Academic Editor: Boris Andrievsky
Electronics 2022, 11(1), 75; https://doi.org/10.3390/electronics11010075
Received: 18 November 2021 / Revised: 20 December 2021 / Accepted: 23 December 2021 / Published: 27 December 2021
(This article belongs to the Section Microwave and Wireless Communications)
This paper presents hybrid precoding for a non-orthogonal multiple access (NOMA) transmission scheme in a millimeter wave (mmWave) massive MIMO (mMIMO) downlink. In hybrid precoding, the analog precoder is obtained by the orthogonalization of the users’ channel vectors to minimize inter-beam interference. The digital precoder consists of a zero-forcing precoder to minimize inter-user interference. In order to break the barrier of one user per beam, we utilize the NOMA within the beam for power domain multiplexing among users. Simulation results show the proposed scheme’s efficacy compared to the state-of-the-art schemes and provide 1.48 times better sum-rate performance at 10 dB received SNR. View Full-Text
Keywords: low complexity hybrid precoding; NOMA; mmWave mMIMO low complexity hybrid precoding; NOMA; mmWave mMIMO
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MDPI and ACS Style

Alraddady, F.; Ahmed, I.; Habtemicail, F. Robust Hybrid Beam-Forming for Non-Orthogonal Multiple Access in Massive MIMO Downlink. Electronics 2022, 11, 75. https://doi.org/10.3390/electronics11010075

AMA Style

Alraddady F, Ahmed I, Habtemicail F. Robust Hybrid Beam-Forming for Non-Orthogonal Multiple Access in Massive MIMO Downlink. Electronics. 2022; 11(1):75. https://doi.org/10.3390/electronics11010075

Chicago/Turabian Style

Alraddady, Fahad, Irfan Ahmed, and Filmon Habtemicail. 2022. "Robust Hybrid Beam-Forming for Non-Orthogonal Multiple Access in Massive MIMO Downlink" Electronics 11, no. 1: 75. https://doi.org/10.3390/electronics11010075

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