4.7 Article

Hybrid Beamforming for Intelligent Reflecting Surface Aided Millimeter Wave MIMO Systems

期刊

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
卷 21, 期 9, 页码 7343-7357

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TWC.2022.3157880

关键词

MIMO communication; Radio frequency; Array signal processing; Narrowband; Broadband communication; Millimeter wave communication; Frequency division multiplexing; Millimeter wave (mmWave) communications; multiple-input multiple-output (MIMO); hybrid beamforming; intelligent reflecting surface (IRS); frequency-selective channels; orthogonal frequency division multiplexing (OFDM)

资金

  1. LG Electronics Inc.
  2. Ministry of Science and ICT (MSIT), South Korea [IITP-2020-0-01787]
  3. Development of sub-THz band wireless transmission and access core technology for 6G Tbps data rate IITP [2021-000269]

向作者/读者索取更多资源

This paper studies the IRS-aided mmWave MIMO systems with hybrid beamforming architectures and proposes joint designs for narrowband and broadband scenarios. Simulation results show that the proposed designs can significantly enhance the spectral efficiency of the systems.
As communication systems that employ millimeter wave (mmWave) frequency bands must use large antenna arrays to overcome the severe propagation loss of mmWave signals, hybrid beamforming has been considered as an integral component of mmWave communications. Recently, intelligent reflecting surface (IRS) has been proposed as an innovative technology that can significantly improve the performance of mmWave communication systems through the use of low-cost passive reflecting elements. In this paper, we study IRS-aided mmWave multiple-input multiple-output (MIMO) systems with hybrid beamforming architectures. We first exploit the sparse-scattering structure and large dimension of mmWave channels to develop the joint design of IRS reflection matrix and hybrid beamformer for narrowband MIMO systems. Then, we generalize the proposed joint design to broadband MIMO systems with orthogonal frequency division multiplexing (OFDM) modulation by leveraging the angular sparsity of frequency-selective mmWave channels. Simulation results demonstrate that the proposed joint designs can significantly enhance the spectral efficiency of the systems of interest and achieve superior performance over the existing designs.

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