Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment
Pilot contamination is appeared in massive MIMO (multiple input multiple output) system when using the same pilot sequences at different cells to get the channel state information.It becomes a bottleneck problem of massive MIMO when the number of antenna goes infinite.In order to dealt with pilot co...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2017-02-01
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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.2017038/ |
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| author | Xin-lei SONG Lin YANG Jia-liang DU |
| author_facet | Xin-lei SONG Lin YANG Jia-liang DU |
| author_sort | Xin-lei SONG |
| collection | DOAJ |
| description | Pilot contamination is appeared in massive MIMO (multiple input multiple output) system when using the same pilot sequences at different cells to get the channel state information.It becomes a bottleneck problem of massive MIMO when the number of antenna goes infinite.In order to dealt with pilot contamination,a new TS-CSPA joint scheme was proposed.This scheme can mitigate pilot contamination by reduce the reuse of pilot sequence through the time domain and space domain.And the closed-form expression for the achieved rates and signal to interference plus noise ratio(SINR) to verify the advantages of the proposed scheme were given.Numerical results show that significant performance gains to mitigate pilot contamination problem compared to other methods. |
| format | Article |
| id | doaj-art-a71ed7646f124e57a02f6e9d00d6d019 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2017-02-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-a71ed7646f124e57a02f6e9d00d6d0192025-01-14T07:11:44ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2017-02-013816517259707537Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignmentXin-lei SONGLin YANGJia-liang DUPilot contamination is appeared in massive MIMO (multiple input multiple output) system when using the same pilot sequences at different cells to get the channel state information.It becomes a bottleneck problem of massive MIMO when the number of antenna goes infinite.In order to dealt with pilot contamination,a new TS-CSPA joint scheme was proposed.This scheme can mitigate pilot contamination by reduce the reuse of pilot sequence through the time domain and space domain.And the closed-form expression for the achieved rates and signal to interference plus noise ratio(SINR) to verify the advantages of the proposed scheme were given.Numerical results show that significant performance gains to mitigate pilot contamination problem compared to other methods.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017038/massive MIMOpilot contaminationspectral efficiencychannel estimate |
| spellingShingle | Xin-lei SONG Lin YANG Jia-liang DU Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment Tongxin xuebao massive MIMO pilot contamination spectral efficiency channel estimate |
| title | Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment |
| title_full | Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment |
| title_fullStr | Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment |
| title_full_unstemmed | Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment |
| title_short | Pilot decontamination in massive MIMO system combining time-shifted and cell sectorization pilot assignment |
| title_sort | pilot decontamination in massive mimo system combining time shifted and cell sectorization pilot assignment |
| topic | massive MIMO pilot contamination spectral efficiency channel estimate |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2017038/ |
| work_keys_str_mv | AT xinleisong pilotdecontaminationinmassivemimosystemcombiningtimeshiftedandcellsectorizationpilotassignment AT linyang pilotdecontaminationinmassivemimosystemcombiningtimeshiftedandcellsectorizationpilotassignment AT jialiangdu pilotdecontaminationinmassivemimosystemcombiningtimeshiftedandcellsectorizationpilotassignment |