Low complexity codebook search method in massive MIMO system
In Massive MIMO systems for 5G networks,precoding technology is one of the key technologies.Aiming at user side codebook search method of the discrete Fourier transform (DFT) rotation codebook,a low complexity search algorithm was proposed.In this algorithm,all horizontal and vertical codebooks were...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2019-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019009/ |
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| _version_ | 1841539470553251840 |
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| author | Jianfei LIU Liping HE Ying TAO Di LIU Xiangye ZENG Mengjun WANG |
| author_facet | Jianfei LIU Liping HE Ying TAO Di LIU Xiangye ZENG Mengjun WANG |
| author_sort | Jianfei LIU |
| collection | DOAJ |
| description | In Massive MIMO systems for 5G networks,precoding technology is one of the key technologies.Aiming at user side codebook search method of the discrete Fourier transform (DFT) rotation codebook,a low complexity search algorithm was proposed.In this algorithm,all horizontal and vertical codebooks were grouped separately according to the characteristics that the precoding vectors with the same column of DFT rotation codebooks had the smallest chordal distance and the smaller chordal distance have the stronger correlation,and then the optimal horizontal and vertical codewords with maximum channel gain were obtained to form 3D precoding code-books.The simulation results indicate that the searching complexity of the proposed method is significantly reduced under conditions of insuring the system performance,moreover,this advantage becomes greater with the number of antennas increasing. |
| format | Article |
| id | doaj-art-f63daceeda454df49b8c6a12b96f1008 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-f63daceeda454df49b8c6a12b96f10082025-01-14T07:16:07ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2019-01-0140798659724407Low complexity codebook search method in massive MIMO systemJianfei LIULiping HEYing TAODi LIUXiangye ZENGMengjun WANGIn Massive MIMO systems for 5G networks,precoding technology is one of the key technologies.Aiming at user side codebook search method of the discrete Fourier transform (DFT) rotation codebook,a low complexity search algorithm was proposed.In this algorithm,all horizontal and vertical codebooks were grouped separately according to the characteristics that the precoding vectors with the same column of DFT rotation codebooks had the smallest chordal distance and the smaller chordal distance have the stronger correlation,and then the optimal horizontal and vertical codewords with maximum channel gain were obtained to form 3D precoding code-books.The simulation results indicate that the searching complexity of the proposed method is significantly reduced under conditions of insuring the system performance,moreover,this advantage becomes greater with the number of antennas increasing.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019009/massive MIMODFT rotation codebookchordal distancelow complexitycodebook search algorithm |
| spellingShingle | Jianfei LIU Liping HE Ying TAO Di LIU Xiangye ZENG Mengjun WANG Low complexity codebook search method in massive MIMO system Tongxin xuebao massive MIMO DFT rotation codebook chordal distance low complexity codebook search algorithm |
| title | Low complexity codebook search method in massive MIMO system |
| title_full | Low complexity codebook search method in massive MIMO system |
| title_fullStr | Low complexity codebook search method in massive MIMO system |
| title_full_unstemmed | Low complexity codebook search method in massive MIMO system |
| title_short | Low complexity codebook search method in massive MIMO system |
| title_sort | low complexity codebook search method in massive mimo system |
| topic | massive MIMO DFT rotation codebook chordal distance low complexity codebook search algorithm |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2019009/ |
| work_keys_str_mv | AT jianfeiliu lowcomplexitycodebooksearchmethodinmassivemimosystem AT lipinghe lowcomplexitycodebooksearchmethodinmassivemimosystem AT yingtao lowcomplexitycodebooksearchmethodinmassivemimosystem AT diliu lowcomplexitycodebooksearchmethodinmassivemimosystem AT xiangyezeng lowcomplexitycodebooksearchmethodinmassivemimosystem AT mengjunwang lowcomplexitycodebooksearchmethodinmassivemimosystem |