Design of beamforming for IRS multi-partition-aided THz multi-subarray
In the IRS-aided THz communication system, in order to break the channel sparsity limitation on the system spatial multiplexing gain, a hybrid beam forming architecture with wide-spaced multi-subarrays at the transceiver/transmitter side was proposed and the transmission scheme of IRS multi-partitio...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2023-08-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023158/ |
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| author | Zufan ZHANG Rui TANG |
| author_facet | Zufan ZHANG Rui TANG |
| author_sort | Zufan ZHANG |
| collection | DOAJ |
| description | In the IRS-aided THz communication system, in order to break the channel sparsity limitation on the system spatial multiplexing gain, a hybrid beam forming architecture with wide-spaced multi-subarrays at the transceiver/transmitter side was proposed and the transmission scheme of IRS multi-partition-aided THz multi-subarrays was designed.Firstly, a non-convex objective function with multivariate coupling and non-convex constraints was constructed based on the principle of maximizing spectrum efficiency.Then, the optimization problem was decoupled into two easy-to-solve sub-problems, namely, the reflection coefficient matrix design of IRS and the hybrid beamforming matrix design at the transceiver/receiver.Finally, the Riemannian manifold optimization algorithm was used to calculate the reflection coefficient matrix of IRS, and the closed solution of the hybrid beamforming matrix design at the transceiver/receiver was obtained through mathematical derivation.Simulation results show that compared with the baseline scheme, the proposed scheme can achieve better spectrum efficiency. |
| format | Article |
| id | doaj-art-36e58e07a14c452396d6ecadc6a2f057 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2023-08-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-36e58e07a14c452396d6ecadc6a2f0572025-01-14T06:22:46ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2023-08-0144788859385799Design of beamforming for IRS multi-partition-aided THz multi-subarrayZufan ZHANGRui TANGIn the IRS-aided THz communication system, in order to break the channel sparsity limitation on the system spatial multiplexing gain, a hybrid beam forming architecture with wide-spaced multi-subarrays at the transceiver/transmitter side was proposed and the transmission scheme of IRS multi-partition-aided THz multi-subarrays was designed.Firstly, a non-convex objective function with multivariate coupling and non-convex constraints was constructed based on the principle of maximizing spectrum efficiency.Then, the optimization problem was decoupled into two easy-to-solve sub-problems, namely, the reflection coefficient matrix design of IRS and the hybrid beamforming matrix design at the transceiver/receiver.Finally, the Riemannian manifold optimization algorithm was used to calculate the reflection coefficient matrix of IRS, and the closed solution of the hybrid beamforming matrix design at the transceiver/receiver was obtained through mathematical derivation.Simulation results show that compared with the baseline scheme, the proposed scheme can achieve better spectrum efficiency.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023158/intelligent reflecting surfacetwo-level spatial multiplexinghybrid beamformingRiemannian manifold optimization |
| spellingShingle | Zufan ZHANG Rui TANG Design of beamforming for IRS multi-partition-aided THz multi-subarray Tongxin xuebao intelligent reflecting surface two-level spatial multiplexing hybrid beamforming Riemannian manifold optimization |
| title | Design of beamforming for IRS multi-partition-aided THz multi-subarray |
| title_full | Design of beamforming for IRS multi-partition-aided THz multi-subarray |
| title_fullStr | Design of beamforming for IRS multi-partition-aided THz multi-subarray |
| title_full_unstemmed | Design of beamforming for IRS multi-partition-aided THz multi-subarray |
| title_short | Design of beamforming for IRS multi-partition-aided THz multi-subarray |
| title_sort | design of beamforming for irs multi partition aided thz multi subarray |
| topic | intelligent reflecting surface two-level spatial multiplexing hybrid beamforming Riemannian manifold optimization |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2023158/ |
| work_keys_str_mv | AT zufanzhang designofbeamformingforirsmultipartitionaidedthzmultisubarray AT ruitang designofbeamformingforirsmultipartitionaidedthzmultisubarray |