Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems
This paper proposes a novel, unified approach to design both radio frequency (RF) and baseband beamforming (BF) solutions for wideband hybrid multiple-input multiple-output (MIMO) systems using the Riemannian manifold optimization. The proposed two-stage optimization framework effectively addresses...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10943173/ |
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| author | Hyunwoo Nam Girim Kwon Hyuncheol Park |
| author_facet | Hyunwoo Nam Girim Kwon Hyuncheol Park |
| author_sort | Hyunwoo Nam |
| collection | DOAJ |
| description | This paper proposes a novel, unified approach to design both radio frequency (RF) and baseband beamforming (BF) solutions for wideband hybrid multiple-input multiple-output (MIMO) systems using the Riemannian manifold optimization. The proposed two-stage optimization framework effectively addresses various power constraints of the wideband hybrid MIMO systems, including total sum power, per-RF-chain, and per-antenna power constraints. By transforming constrained optimization problems into unconstrained ones on Riemannian submanifolds, we achieve notable improvements in spectral efficiency (SE) and power consumption. In addition, we account for the log-determinant structure of the objective function, which forms an unconstrained solution subspace. This allows for a more efficient retraction process towards the manifold, representing the set of solutions that satisfy the constraints. This unified design approach provides a more accurate and efficient solution to non-convex optimization problems with complex constraints. Simulation results demonstrate the superior performance of the proposed approach over conventional approaches. |
| format | Article |
| id | doaj-art-41c9e463341243639dd0b6a33bb5ffa7 |
| institution | DOAJ |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-41c9e463341243639dd0b6a33bb5ffa72025-08-20T03:05:35ZengIEEEIEEE Access2169-35362025-01-0113569585698110.1109/ACCESS.2025.355529610943173Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO SystemsHyunwoo Nam0https://orcid.org/0000-0002-9852-8449Girim Kwon1https://orcid.org/0000-0003-2692-8600Hyuncheol Park2https://orcid.org/0000-0002-7346-1364Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of KoreaSchool of Electrical and Computer Engineering, University of Seoul, Seoul, Republic of KoreaKorea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of KoreaThis paper proposes a novel, unified approach to design both radio frequency (RF) and baseband beamforming (BF) solutions for wideband hybrid multiple-input multiple-output (MIMO) systems using the Riemannian manifold optimization. The proposed two-stage optimization framework effectively addresses various power constraints of the wideband hybrid MIMO systems, including total sum power, per-RF-chain, and per-antenna power constraints. By transforming constrained optimization problems into unconstrained ones on Riemannian submanifolds, we achieve notable improvements in spectral efficiency (SE) and power consumption. In addition, we account for the log-determinant structure of the objective function, which forms an unconstrained solution subspace. This allows for a more efficient retraction process towards the manifold, representing the set of solutions that satisfy the constraints. This unified design approach provides a more accurate and efficient solution to non-convex optimization problems with complex constraints. Simulation results demonstrate the superior performance of the proposed approach over conventional approaches.https://ieeexplore.ieee.org/document/10943173/Frequency selective channeldigital-analog hybrid beamformingMIMO systemsRiemannian manifoldtotal power constraintper-RF-chain power constraint |
| spellingShingle | Hyunwoo Nam Girim Kwon Hyuncheol Park Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems IEEE Access Frequency selective channel digital-analog hybrid beamforming MIMO systems Riemannian manifold total power constraint per-RF-chain power constraint |
| title | Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems |
| title_full | Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems |
| title_fullStr | Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems |
| title_full_unstemmed | Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems |
| title_short | Hybrid Beamforming Design on Riemannian Manifolds for Wideband MIMO Systems |
| title_sort | hybrid beamforming design on riemannian manifolds for wideband mimo systems |
| topic | Frequency selective channel digital-analog hybrid beamforming MIMO systems Riemannian manifold total power constraint per-RF-chain power constraint |
| url | https://ieeexplore.ieee.org/document/10943173/ |
| work_keys_str_mv | AT hyunwoonam hybridbeamformingdesignonriemannianmanifoldsforwidebandmimosystems AT girimkwon hybridbeamformingdesignonriemannianmanifoldsforwidebandmimosystems AT hyuncheolpark hybridbeamformingdesignonriemannianmanifoldsforwidebandmimosystems |