Low-resolution hybrid beamforming in millimeter-wave multi-user systems
Low-resolution hybrid beamforming in millimeter-wave multi-user systems
A new hybrid amalgam of analog and baseband digital beamforming is conceived for millimeter-wave (mmWave) multi-user networks. The base station is equipped with a largescale antenna-array, which however relies on a limited number of radio frequency chains for mitigating the severe path-loss of mmWave band transmission. Each user is also equipped with a multi-antenna array. The analog beamformer’s weight-resolution is set low for the sake of power efficient implementation. The hybrid beamformer design relies on the novel optimization criterion of directly maximizing the geometric means of users’ rates, which is shown to result in fair rate-distributions for the users without imposing a minimum user-rate constraint. Furthermore, new computationally efficient algorithms are developed, which are purely based on closed-form low-complexity expressions. Hence these low-complexity solutions are eminently suitable for large scale mmWave arrays. Numerical examples are provided for demonstrating their efficiency.
Approximation algorithms, Array signal processing, Closed-form solutions, Millimeter wave communication, Millimeter-wave communications, Optimization, Radio frequency, Symmetric matrices, analog beamforming, baseband beamforming, hybrid beamforming, nonconvex optimization algorithms, nonlinear discrete optimization
8941-8955
Yu, Hongwen
e9746241-66a1-4dfb-ad49-c364c8f69321
Tuan, Hoang Duong
423ee18d-ebc7-44d9-9264-3819b63779eb
Dutkiewicz, Eryk
758c11d4-76a2-4df8-8ec9-451a8ff91aab
Poor, H. Vincent
2ce6442b-62db-47b3-8d8e-484e7fad51af
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
1 July 2023
Yu, Hongwen
e9746241-66a1-4dfb-ad49-c364c8f69321
Tuan, Hoang Duong
423ee18d-ebc7-44d9-9264-3819b63779eb
Dutkiewicz, Eryk
758c11d4-76a2-4df8-8ec9-451a8ff91aab
Poor, H. Vincent
2ce6442b-62db-47b3-8d8e-484e7fad51af
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Yu, Hongwen, Tuan, Hoang Duong, Dutkiewicz, Eryk, Poor, H. Vincent and Hanzo, Lajos
(2023)
Low-resolution hybrid beamforming in millimeter-wave multi-user systems.
IEEE Transactions on Vehicular Technology, 72 (7), .
(doi:10.1109/TVT.2023.3246632).
Abstract
A new hybrid amalgam of analog and baseband digital beamforming is conceived for millimeter-wave (mmWave) multi-user networks. The base station is equipped with a largescale antenna-array, which however relies on a limited number of radio frequency chains for mitigating the severe path-loss of mmWave band transmission. Each user is also equipped with a multi-antenna array. The analog beamformer’s weight-resolution is set low for the sake of power efficient implementation. The hybrid beamformer design relies on the novel optimization criterion of directly maximizing the geometric means of users’ rates, which is shown to result in fair rate-distributions for the users without imposing a minimum user-rate constraint. Furthermore, new computationally efficient algorithms are developed, which are purely based on closed-form low-complexity expressions. Hence these low-complexity solutions are eminently suitable for large scale mmWave arrays. Numerical examples are provided for demonstrating their efficiency.
Text
low_resolution_mmwave
- Accepted Manuscript
More information
Accepted/In Press date: 14 February 2023
e-pub ahead of print date: 20 February 2023
Published date: 1 July 2023
Additional Information:
Funding Information:
The work of H. D. Tuan was supported by Australian Research Council's Discovery Projects under Grant DP190102501. The work of H.V. Poor was supported by U.S. National Science Foundation under Grants CCF-1908308 and CNS-2128448. The work of L. Hanzo was supported by Engineering and Physical Sciences Research Council under Projects EP/W016605/1 and EP/X01228X/1 and in part by European Research Council's Advanced Fellow Grant Quant Com under Grant 789028
Publisher Copyright:
© 2023 IEEE.
Keywords:
Approximation algorithms, Array signal processing, Closed-form solutions, Millimeter wave communication, Millimeter-wave communications, Optimization, Radio frequency, Symmetric matrices, analog beamforming, baseband beamforming, hybrid beamforming, nonconvex optimization algorithms, nonlinear discrete optimization
Identifiers
Local EPrints ID: 475315
URI: http://eprints.soton.ac.uk/id/eprint/475315
ISSN: 0018-9545
PURE UUID: f93323ca-7e5f-4a2a-bd58-f5ef0548c006
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Date deposited: 15 Mar 2023 17:36
Last modified: 18 Mar 2024 02:36
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Contributors
Author:
Hongwen Yu
Author:
Hoang Duong Tuan
Author:
Eryk Dutkiewicz
Author:
H. Vincent Poor
Author:
Lajos Hanzo
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