Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink
To suppress multi-user interference (MUI) and inter-cell interference (ICI) existing in multi-cell multi-user TDD MIMO downlink,an interference suppression algorithm through designing precoder was proposed.Firstly,a precoding matrix was designed for MUI suppression,with the help of the QR decomposit...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2013-04-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.04.023/ |
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| _version_ | 1841539847666270208 |
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| author | Zu-jun LIU Jie-ling WANG De-chun SUN Ke-chu YI |
| author_facet | Zu-jun LIU Jie-ling WANG De-chun SUN Ke-chu YI |
| author_sort | Zu-jun LIU |
| collection | DOAJ |
| description | To suppress multi-user interference (MUI) and inter-cell interference (ICI) existing in multi-cell multi-user TDD MIMO downlink,an interference suppression algorithm through designing precoder was proposed.Firstly,a precoding matrix was designed for MUI suppression,with the help of the QR decomposition of generalized MMSE channel inversion.And then the second precoding matrix was designed to suppress ICI and residual MUI,using a signal leakage criterion.The proposed algorithm could utilize TDD MIMO channel reciprocity,and thus did not require users' feedback information.The algorithm had been simulated in a multi-user TDD MIMO system composed of urban micro-cells.Simulation results show that,the proposed algorithm can effectively improve system capacity and user's average SINR. |
| format | Article |
| id | doaj-art-e8a53b14dd0b4392bb951fcac6704ef3 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2013-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-e8a53b14dd0b4392bb951fcac6704ef32025-01-14T06:35:10ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2013-04-013418719359671820Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlinkZu-jun LIUJie-ling WANGDe-chun SUNKe-chu YITo suppress multi-user interference (MUI) and inter-cell interference (ICI) existing in multi-cell multi-user TDD MIMO downlink,an interference suppression algorithm through designing precoder was proposed.Firstly,a precoding matrix was designed for MUI suppression,with the help of the QR decomposition of generalized MMSE channel inversion.And then the second precoding matrix was designed to suppress ICI and residual MUI,using a signal leakage criterion.The proposed algorithm could utilize TDD MIMO channel reciprocity,and thus did not require users' feedback information.The algorithm had been simulated in a multi-user TDD MIMO system composed of urban micro-cells.Simulation results show that,the proposed algorithm can effectively improve system capacity and user's average SINR.http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.04.023/TDD MIMOmulti-user interference (MUI)inter-cell interference (ICI)interference suppressiondownlink |
| spellingShingle | Zu-jun LIU Jie-ling WANG De-chun SUN Ke-chu YI Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink Tongxin xuebao TDD MIMO multi-user interference (MUI) inter-cell interference (ICI) interference suppression downlink |
| title | Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink |
| title_full | Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink |
| title_fullStr | Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink |
| title_full_unstemmed | Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink |
| title_short | Linear precoding for interference suppression in multi-cell multi-user TDD MIMO downlink |
| title_sort | linear precoding for interference suppression in multi cell multi user tdd mimo downlink |
| topic | TDD MIMO multi-user interference (MUI) inter-cell interference (ICI) interference suppression downlink |
| url | http://www.joconline.com.cn/zh/article/doi/10.3969/j.issn.1000-436x.2013.04.023/ |
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