Wideband Beamforming for Hybrid Phased Array Terahertz Systems

Bolei Wang; Feifei Gao; Chengwen Xing; Jianping An; Geoffrey Ye Li

doi:10.1109/ICC42927.2021.9500455

Wideband Beamforming for Hybrid Phased Array Terahertz Systems

Bolei Wang, Feifei Gao, Chengwen Xing, Jianping An, Geoffrey Ye Li

School of Information and Electronics

Tsinghua University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

6 Citations (Scopus)

Abstract

The large bandwidth at terahertz (THz) and the large number of antennas in massive MIMO result in the non-negligible spatial wideband effect in time domain or the corresponding beam squint issue in frequency domain. For a phased array based hybrid transceiver, beam squint makes the accurate beamforming an enormous challenge since an analog beamformer/combiner cannot generate frequency-dependent phase shift constitutionally. In this paper, we propose a virtual sub-array based wideband hybrid beamforming approach to eliminate the impact of beam squint. By dividing the whole array into several virtual sub-arrays, a wider beam is generated and provides an evenly distributed array gain across the whole operating frequency band. Analytical and numerical results demonstrate the effectiveness of the proposed wideband beamforming approach.

Original language	English
Title of host publication	ICC 2021 - IEEE International Conference on Communications, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728171227
DOIs	https://doi.org/10.1109/ICC42927.2021.9500455
Publication status	Published - Jun 2021
Event	2021 IEEE International Conference on Communications, ICC 2021 - Virtual, Online, Canada Duration: 14 Jun 2021 → 23 Jun 2021

Publication series

Name	IEEE International Conference on Communications
ISSN (Print)	1550-3607

Conference

Conference	2021 IEEE International Conference on Communications, ICC 2021
Country/Territory	Canada
City	Virtual, Online
Period	14/06/21 → 23/06/21

Access to Document

10.1109/ICC42927.2021.9500455

Cite this

@inproceedings{87e741ca031140228c2c44e0d683b708,

title = "Wideband Beamforming for Hybrid Phased Array Terahertz Systems",

abstract = "The large bandwidth at terahertz (THz) and the large number of antennas in massive MIMO result in the non-negligible spatial wideband effect in time domain or the corresponding beam squint issue in frequency domain. For a phased array based hybrid transceiver, beam squint makes the accurate beamforming an enormous challenge since an analog beamformer/combiner cannot generate frequency-dependent phase shift constitutionally. In this paper, we propose a virtual sub-array based wideband hybrid beamforming approach to eliminate the impact of beam squint. By dividing the whole array into several virtual sub-arrays, a wider beam is generated and provides an evenly distributed array gain across the whole operating frequency band. Analytical and numerical results demonstrate the effectiveness of the proposed wideband beamforming approach.",

author = "Bolei Wang and Feifei Gao and Chengwen Xing and Jianping An and Li, {Geoffrey Ye}",

note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 IEEE International Conference on Communications, ICC 2021 ; Conference date: 14-06-2021 Through 23-06-2021",

year = "2021",

month = jun,

doi = "10.1109/ICC42927.2021.9500455",

language = "English",

series = "IEEE International Conference on Communications",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "ICC 2021 - IEEE International Conference on Communications, Proceedings",

address = "United States",

}

Wang, B, Gao, F, Xing, C , An, J & Li, GY 2021, Wideband Beamforming for Hybrid Phased Array Terahertz Systems. in ICC 2021 - IEEE International Conference on Communications, Proceedings. IEEE International Conference on Communications, Institute of Electrical and Electronics Engineers Inc., 2021 IEEE International Conference on Communications, ICC 2021, Virtual, Online, Canada, 14/06/21. https://doi.org/10.1109/ICC42927.2021.9500455

Wideband Beamforming for Hybrid Phased Array Terahertz Systems. / Wang, Bolei; Gao, Feifei; Xing, Chengwen et al.
ICC 2021 - IEEE International Conference on Communications, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. (IEEE International Conference on Communications).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Wideband Beamforming for Hybrid Phased Array Terahertz Systems

AU - Wang, Bolei

AU - Gao, Feifei

AU - Xing, Chengwen

AU - An, Jianping

AU - Li, Geoffrey Ye

PY - 2021/6

Y1 - 2021/6

N2 - The large bandwidth at terahertz (THz) and the large number of antennas in massive MIMO result in the non-negligible spatial wideband effect in time domain or the corresponding beam squint issue in frequency domain. For a phased array based hybrid transceiver, beam squint makes the accurate beamforming an enormous challenge since an analog beamformer/combiner cannot generate frequency-dependent phase shift constitutionally. In this paper, we propose a virtual sub-array based wideband hybrid beamforming approach to eliminate the impact of beam squint. By dividing the whole array into several virtual sub-arrays, a wider beam is generated and provides an evenly distributed array gain across the whole operating frequency band. Analytical and numerical results demonstrate the effectiveness of the proposed wideband beamforming approach.

AB - The large bandwidth at terahertz (THz) and the large number of antennas in massive MIMO result in the non-negligible spatial wideband effect in time domain or the corresponding beam squint issue in frequency domain. For a phased array based hybrid transceiver, beam squint makes the accurate beamforming an enormous challenge since an analog beamformer/combiner cannot generate frequency-dependent phase shift constitutionally. In this paper, we propose a virtual sub-array based wideband hybrid beamforming approach to eliminate the impact of beam squint. By dividing the whole array into several virtual sub-arrays, a wider beam is generated and provides an evenly distributed array gain across the whole operating frequency band. Analytical and numerical results demonstrate the effectiveness of the proposed wideband beamforming approach.

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U2 - 10.1109/ICC42927.2021.9500455

DO - 10.1109/ICC42927.2021.9500455

M3 - Conference contribution

AN - SCOPUS:85115704584

T3 - IEEE International Conference on Communications

BT - ICC 2021 - IEEE International Conference on Communications, Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2021 IEEE International Conference on Communications, ICC 2021

Y2 - 14 June 2021 through 23 June 2021

ER -

Wideband Beamforming for Hybrid Phased Array Terahertz Systems

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