Pilot decontamination based on spectrum separation in massive MIMO system
In order to overcome uplink pilot contamination，the technical bottleneck of massive MIMO,and different from the existing parallel parameter design strategy for blind pilot decontamination,a hierarchical parameter design method was proposed,which points out that different system parameters have diffe...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2020-04-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020036/ |
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| _version_ | 1841539342595522560 |
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| author | Hairong WANG Jian DONG Yuhui WANG |
| author_facet | Hairong WANG Jian DONG Yuhui WANG |
| author_sort | Hairong WANG |
| collection | DOAJ |
| description | In order to overcome uplink pilot contamination，the technical bottleneck of massive MIMO,and different from the existing parallel parameter design strategy for blind pilot decontamination,a hierarchical parameter design method was proposed,which points out that different system parameters have different effects on the exact spectrum separation of the sample covariance matrix of the received signal.In other words,different parameters have different priority.Next,it was found that to achieve spectral separation,the power of the desired signal didn’t have to be higher than the interference,and the difference between the two was more important.Furthermore,in a more practical scenario where the pilot sequence length was less than the number of base station receiving antennas,a numerical algorithm was given for the first time to achieve the above-mentioned exact spectral separation.Since the hierarchical parament design ensures the exact separation of the asymptotic spectrum,the results show that the proposed scheme is more suitable for practical applications than the existing blind pilot decontamination. |
| format | Article |
| id | doaj-art-454ae0af512641e8a6cf32a582a139b2 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2020-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-454ae0af512641e8a6cf32a582a139b22025-01-14T07:19:01ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2020-04-014119720559734572Pilot decontamination based on spectrum separation in massive MIMO systemHairong WANGJian DONGYuhui WANGIn order to overcome uplink pilot contamination，the technical bottleneck of massive MIMO,and different from the existing parallel parameter design strategy for blind pilot decontamination,a hierarchical parameter design method was proposed,which points out that different system parameters have different effects on the exact spectrum separation of the sample covariance matrix of the received signal.In other words,different parameters have different priority.Next,it was found that to achieve spectral separation,the power of the desired signal didn’t have to be higher than the interference,and the difference between the two was more important.Furthermore,in a more practical scenario where the pilot sequence length was less than the number of base station receiving antennas,a numerical algorithm was given for the first time to achieve the above-mentioned exact spectral separation.Since the hierarchical parament design ensures the exact separation of the asymptotic spectrum,the results show that the proposed scheme is more suitable for practical applications than the existing blind pilot decontamination.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020036/massive MIMOpilot contaminationchannel estimationspectrum separation |
| spellingShingle | Hairong WANG Jian DONG Yuhui WANG Pilot decontamination based on spectrum separation in massive MIMO system Tongxin xuebao massive MIMO pilot contamination channel estimation spectrum separation |
| title | Pilot decontamination based on spectrum separation in massive MIMO system |
| title_full | Pilot decontamination based on spectrum separation in massive MIMO system |
| title_fullStr | Pilot decontamination based on spectrum separation in massive MIMO system |
| title_full_unstemmed | Pilot decontamination based on spectrum separation in massive MIMO system |
| title_short | Pilot decontamination based on spectrum separation in massive MIMO system |
| title_sort | pilot decontamination based on spectrum separation in massive mimo system |
| topic | massive MIMO pilot contamination channel estimation spectrum separation |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2020036/ |
| work_keys_str_mv | AT hairongwang pilotdecontaminationbasedonspectrumseparationinmassivemimosystem AT jiandong pilotdecontaminationbasedonspectrumseparationinmassivemimosystem AT yuhuiwang pilotdecontaminationbasedonspectrumseparationinmassivemimosystem |