Beam Selection for Wideband Millimeter Wave MIMO Relying on Lens Antenna Arrays

Chenghao Feng; Wenqian Shen; Jianping An

doi:10.1109/LCOMM.2019.2930081

Beam Selection for Wideband Millimeter Wave MIMO Relying on Lens Antenna Arrays

Chenghao Feng, Wenqian Shen^*, Jianping An

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

Beamspace multi-input-multi-output (MIMO) relying on lens antenna arrays can significantly reduce the number of radio-frequency chains in millimeter-wave (mmWave) communication systems through beam selection. However, the beamforming gain is actually frequency-dependent in wideband mmWave MIMO systems. This phenomenon is called beam squint which will deteriorate the system's performance when traditional beam selection methods are used. To solve this problem, we propose a wideband beam selection method for mmWave MIMO systems relying on lens antenna arrays. First, we select one beam with the maximal energy averaged over the whole band for each user and then we sequentially select the beams that contribute the most to the sum-rate. The performance analysis of the proposed wideband beam selection method is also presented. Numerical results show that the proposed method achieves higher sum-rate and energy efficiency compared with its traditional counterparts.

Original language	English
Article number	8767024
Pages (from-to)	1875-1878
Number of pages	4
Journal	IEEE Communications Letters
Volume	23
Issue number	10
DOIs	https://doi.org/10.1109/LCOMM.2019.2930081
Publication status	Published - Oct 2019

Keywords

MmWave MIMO
lens antenna arrays
wideband beam selection

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1109/LCOMM.2019.2930081

Cite this

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title = "Beam Selection for Wideband Millimeter Wave MIMO Relying on Lens Antenna Arrays",

abstract = "Beamspace multi-input-multi-output (MIMO) relying on lens antenna arrays can significantly reduce the number of radio-frequency chains in millimeter-wave (mmWave) communication systems through beam selection. However, the beamforming gain is actually frequency-dependent in wideband mmWave MIMO systems. This phenomenon is called beam squint which will deteriorate the system's performance when traditional beam selection methods are used. To solve this problem, we propose a wideband beam selection method for mmWave MIMO systems relying on lens antenna arrays. First, we select one beam with the maximal energy averaged over the whole band for each user and then we sequentially select the beams that contribute the most to the sum-rate. The performance analysis of the proposed wideband beam selection method is also presented. Numerical results show that the proposed method achieves higher sum-rate and energy efficiency compared with its traditional counterparts.",

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author = "Chenghao Feng and Wenqian Shen and Jianping An",

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AU - Feng, Chenghao

AU - Shen, Wenqian

AU - An, Jianping

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N2 - Beamspace multi-input-multi-output (MIMO) relying on lens antenna arrays can significantly reduce the number of radio-frequency chains in millimeter-wave (mmWave) communication systems through beam selection. However, the beamforming gain is actually frequency-dependent in wideband mmWave MIMO systems. This phenomenon is called beam squint which will deteriorate the system's performance when traditional beam selection methods are used. To solve this problem, we propose a wideband beam selection method for mmWave MIMO systems relying on lens antenna arrays. First, we select one beam with the maximal energy averaged over the whole band for each user and then we sequentially select the beams that contribute the most to the sum-rate. The performance analysis of the proposed wideband beam selection method is also presented. Numerical results show that the proposed method achieves higher sum-rate and energy efficiency compared with its traditional counterparts.

AB - Beamspace multi-input-multi-output (MIMO) relying on lens antenna arrays can significantly reduce the number of radio-frequency chains in millimeter-wave (mmWave) communication systems through beam selection. However, the beamforming gain is actually frequency-dependent in wideband mmWave MIMO systems. This phenomenon is called beam squint which will deteriorate the system's performance when traditional beam selection methods are used. To solve this problem, we propose a wideband beam selection method for mmWave MIMO systems relying on lens antenna arrays. First, we select one beam with the maximal energy averaged over the whole band for each user and then we sequentially select the beams that contribute the most to the sum-rate. The performance analysis of the proposed wideband beam selection method is also presented. Numerical results show that the proposed method achieves higher sum-rate and energy efficiency compared with its traditional counterparts.

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Beam Selection for Wideband Millimeter Wave MIMO Relying on Lens Antenna Arrays

Abstract

Keywords

UN SDGs

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