STAR-RIS assisted multi-user wireless system beamforming design in TS mode
Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has the capability of simultaneous transmission and reflection, extending the communication capacity of conventional RIS (CRIS) from half-space to full-space. For the multi-user multiple-input single-output (MIS...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2024-11-01
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| Series: | Dianxin kexue |
| Subjects: | |
| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2024244/ |
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| _version_ | 1849390443985371136 |
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| author | LIU Gang LI Mingtai PAN Cheng GUO Yi FU Shaozhong |
| author_facet | LIU Gang LI Mingtai PAN Cheng GUO Yi FU Shaozhong |
| author_sort | LIU Gang |
| collection | DOAJ |
| description | Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has the capability of simultaneous transmission and reflection, extending the communication capacity of conventional RIS (CRIS) from half-space to full-space. For the multi-user multiple-input single-output (MISO) communication system assisted by STAR-RIS, a beamforming algorithm based on time switch (TS) mode was proposed to minimize transmission power. Firstly, maximum ratio transmission (MRT) was used to get the initial BS transmitting beamforming. Secondly, TS slot orthogonality and channel gain maximum (CGM) were used to decouple the non-convex problem into the constant mode non-convex problem and the semi-definite programming (SDP) problem. Finally, manifold optimization and interior point method were used to jointly solve these problems. The simulation results show that, STAR-RIS can effectively reduce the transmission power compared with conventional RIS. Under the same SINR（signal-to-noise ratio）. The proposed algorithm has lower transmitting power than the mainstream algorithm. TS mode has lower transmitting power than energy splitting (ES) mode at low SINR. |
| format | Article |
| id | doaj-art-ff6fe56840d74dcb9fe62dcc3fedd218 |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2024-11-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-ff6fe56840d74dcb9fe62dcc3fedd2182025-08-20T03:41:39ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012024-11-0140162677975901STAR-RIS assisted multi-user wireless system beamforming design in TS modeLIU GangLI MingtaiPAN ChengGUO YiFU ShaozhongSimultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has the capability of simultaneous transmission and reflection, extending the communication capacity of conventional RIS (CRIS) from half-space to full-space. For the multi-user multiple-input single-output (MISO) communication system assisted by STAR-RIS, a beamforming algorithm based on time switch (TS) mode was proposed to minimize transmission power. Firstly, maximum ratio transmission (MRT) was used to get the initial BS transmitting beamforming. Secondly, TS slot orthogonality and channel gain maximum (CGM) were used to decouple the non-convex problem into the constant mode non-convex problem and the semi-definite programming (SDP) problem. Finally, manifold optimization and interior point method were used to jointly solve these problems. The simulation results show that, STAR-RIS can effectively reduce the transmission power compared with conventional RIS. Under the same SINR（signal-to-noise ratio）. The proposed algorithm has lower transmitting power than the mainstream algorithm. TS mode has lower transmitting power than energy splitting (ES) mode at low SINR.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2024244/STAR-RISmulti-userbeamformingminimize transmission power |
| spellingShingle | LIU Gang LI Mingtai PAN Cheng GUO Yi FU Shaozhong STAR-RIS assisted multi-user wireless system beamforming design in TS mode Dianxin kexue STAR-RIS multi-user beamforming minimize transmission power |
| title | STAR-RIS assisted multi-user wireless system beamforming design in TS mode |
| title_full | STAR-RIS assisted multi-user wireless system beamforming design in TS mode |
| title_fullStr | STAR-RIS assisted multi-user wireless system beamforming design in TS mode |
| title_full_unstemmed | STAR-RIS assisted multi-user wireless system beamforming design in TS mode |
| title_short | STAR-RIS assisted multi-user wireless system beamforming design in TS mode |
| title_sort | star ris assisted multi user wireless system beamforming design in ts mode |
| topic | STAR-RIS multi-user beamforming minimize transmission power |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2024244/ |
| work_keys_str_mv | AT liugang starrisassistedmultiuserwirelesssystembeamformingdesignintsmode AT limingtai starrisassistedmultiuserwirelesssystembeamformingdesignintsmode AT pancheng starrisassistedmultiuserwirelesssystembeamformingdesignintsmode AT guoyi starrisassistedmultiuserwirelesssystembeamformingdesignintsmode AT fushaozhong starrisassistedmultiuserwirelesssystembeamformingdesignintsmode |