The University of Southampton
University of Southampton Institutional Repository

Hybrid precoding for wide band millimeter wave MIMO systems in the face of beam squint

Hybrid precoding for wide band millimeter wave MIMO systems in the face of beam squint
Hybrid precoding for wide band millimeter wave MIMO systems in the face of beam squint
Hybrid Transmit Precoding (TPC) is one of the most compelling solutions for millimeter wave (mmWave) multiple input multiple output (MIMO) systems. However, most attention has been focused on narrow-band scenarios. Hence, we dedicate our efforts to the design of hybrid TPC for wideband mmWave MIMO systems, where the beam squint dramatically affects the system performance. We firstly show that the channel matrices of the different subcarriers possess distinct subspaces in case of high bandwidths, hence traditional hybrid TPC schemes suffer from an eroded performance. Therefore, we propose novel hybrid TPC schemes exploiting the full channel state information (CSI), which project all frequencies to the central frequency and construct the common analog TPC matrix for all subcarriers. Moreover, we propose several low-complexity array-vector based hybrid TPC schemes. The high-complexity manifold optimization based hybrid TPC method and the fully digital TPC operating with and without considering beam squint are provided as benchmarks. Our extensive numerical simulations show that the proposed hybrid TPC schemes are capable of achieving similar performance to the excessive-complexity fully digital TPC, when the bandwidth tends to 0.5 GHz and always outperform the traditional hybrid TPC schemes.
1536-1276
Chen, Yun
f5d4b8c5-fc18-4cc1-8487-7128635278c3
Xiong, Yifeng
f93bfe9b-7a6d-47e8-a0a8-7f4f6632ab21
Chen, Da
ede63bb7-39d1-49ad-a3d8-6d9ee965277b
Jiang, Tao
018d0a73-b74b-454e-a2f4-5bf5f28c0efe
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Chen, Yun
f5d4b8c5-fc18-4cc1-8487-7128635278c3
Xiong, Yifeng
f93bfe9b-7a6d-47e8-a0a8-7f4f6632ab21
Chen, Da
ede63bb7-39d1-49ad-a3d8-6d9ee965277b
Jiang, Tao
018d0a73-b74b-454e-a2f4-5bf5f28c0efe
Ng, Soon Xin
e19a63b0-0f12-4591-ab5f-554820d5f78c
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Chen, Yun, Xiong, Yifeng, Chen, Da, Jiang, Tao, Ng, Soon Xin and Hanzo, Lajos (2020) Hybrid precoding for wide band millimeter wave MIMO systems in the face of beam squint. IEEE Transactions on Wireless Communications. (doi:10.1109/TWC.2020.3036945).

Record type: Article

Abstract

Hybrid Transmit Precoding (TPC) is one of the most compelling solutions for millimeter wave (mmWave) multiple input multiple output (MIMO) systems. However, most attention has been focused on narrow-band scenarios. Hence, we dedicate our efforts to the design of hybrid TPC for wideband mmWave MIMO systems, where the beam squint dramatically affects the system performance. We firstly show that the channel matrices of the different subcarriers possess distinct subspaces in case of high bandwidths, hence traditional hybrid TPC schemes suffer from an eroded performance. Therefore, we propose novel hybrid TPC schemes exploiting the full channel state information (CSI), which project all frequencies to the central frequency and construct the common analog TPC matrix for all subcarriers. Moreover, we propose several low-complexity array-vector based hybrid TPC schemes. The high-complexity manifold optimization based hybrid TPC method and the fully digital TPC operating with and without considering beam squint are provided as benchmarks. Our extensive numerical simulations show that the proposed hybrid TPC schemes are capable of achieving similar performance to the excessive-complexity fully digital TPC, when the bandwidth tends to 0.5 GHz and always outperform the traditional hybrid TPC schemes.

Text
Paper-TW-Jan-20-0018.R2-HTPC-BeamSquint-20201106-FinalSubmission - Accepted Manuscript
Download (2MB)

More information

e-pub ahead of print date: 5 November 2020
Published date: 17 November 2020

Identifiers

Local EPrints ID: 445756
URI: http://eprints.soton.ac.uk/id/eprint/445756
ISSN: 1536-1276
PURE UUID: 71baf01a-850a-4b19-9f73-008dc8e59745
ORCID for Yifeng Xiong: ORCID iD orcid.org/0000-0002-4290-7116
ORCID for Soon Xin Ng: ORCID iD orcid.org/0000-0002-0930-7194
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 07 Jan 2021 17:31
Last modified: 07 Jan 2021 17:31

Export record

Altmetrics

Contributors

Author: Yun Chen
Author: Yifeng Xiong ORCID iD
Author: Da Chen
Author: Tao Jiang
Author: Soon Xin Ng ORCID iD
Author: Lajos Hanzo ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×