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MIMO Hybrid Beamforming: Performance Assessment in Macrocells and HetNets
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Author(s): Mostafa Hefnawi (Royal Military College of Canada, Canada)and Jamal Zbitou (LABTIC ENSA of Tangier, University of Abdelmalek Essaadi Tetouan, Morocco)
Copyright: 2023
Pages: 28
Source title:
Handbook of Research on Emerging Designs and Applications for Microwave and Millimeter Wave Circuits
Source Author(s)/Editor(s): Jamal Zbitou (LABTIC, ENSA of Tangier, University of Abdelmalek Essaadi, Morocco), Mostafa Hefnawi (Royal Military College of Canada, Canada), Fouad Aytouna (LABTIC, ENSA of Tetouan, University of Abdelmalek Essaadi, Morocco)and Ahmed El Oualkadi (LabTIC, ENSA of Tangier, University of Abdelmalek Essaadi, Morocco)
DOI: 10.4018/978-1-6684-5955-3.ch001
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Abstract
In mmWave massive MIMO, the required number of radio frequency (RF) chains becomes impractical due to the expensive and power-hungry components such as variable gain power amplifiers, filters, mixers, and analog-to-digital/digital-to-analog converters (ADCs/DACs). A promising solution to this problem is reducing the number of radiofrequency (RF) chains by partitioning beamforming operations between the digital and RF domains, known as hybrid beamforming (HBF), while still achieving the near-optimal performance of the fully digital beamforming systems with much-reduced hardware complexity. This chapter reviews different HBF techniques for massive MIMO in 5G and radar systems. The basic HBF structures and their algorithm design is presented in the context of a point-to-point MIMO hybrid beamforming system. Then, some recently proposed HBF techniques for 5G and beyond networks are investigated, followed by a discussion about the benefit of HBF in MIMO radar systems.
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