Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation
The robust-generalized iterative approach (Robust-GIA), robust-fast iterative approach (Robust-FIA), and robust-decoder covariance optimization approach (Robust-DCOA) are proposed for designing MMSE transceivers of downlink multicell multiuser MIMO systems with per-cell and per-antenna power constr...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | International Journal of Digital Multimedia Broadcasting |
| Online Access: | http://dx.doi.org/10.1155/2010/815704 |
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| _version_ | 1832546622064558080 |
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| author | Jialing Li I-Tai Lu Enoch Lu |
| author_facet | Jialing Li I-Tai Lu Enoch Lu |
| author_sort | Jialing Li |
| collection | DOAJ |
| description | The robust-generalized iterative approach (Robust-GIA), robust-fast iterative approach (Robust-FIA), and robust-decoder covariance optimization approach (Robust-DCOA) are proposed for designing MMSE transceivers of downlink multicell multiuser MIMO systems with per-cell and per-antenna power constraints and possibly imperfect channel state information. The Robust-DCOA is the most restrictive but is always optimum, the Robust-GIA is the most general, and the Robust-FIA is the most efficient. When the Robust-DCOA is applicable and the decoder covariance matrices are full rank, the three proposed approaches are equivalent and all provide the optimum solution. Numerical results show that the proposed robust approaches outperform their non-robust counterparts in various single-cell and multicell examples with different system configurations, channel correlations, power constraints, and cooperation scenarios. Moreover, performances of the robust approaches are insensitive to estimation errors of channel statistics (correlations and path loss). With cell-cooperation, cell edge interference problems can be remedied without reducing the number of data streams by using the proposed robust approaches. |
| format | Article |
| id | doaj-art-a93d8005da5545579a8491f30459a604 |
| institution | Kabale University |
| issn | 1687-7578 1687-7586 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Digital Multimedia Broadcasting |
| spelling | doaj-art-a93d8005da5545579a8491f30459a6042025-02-03T06:47:55ZengWileyInternational Journal of Digital Multimedia Broadcasting1687-75781687-75862010-01-01201010.1155/2010/815704815704Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell CooperationJialing Li0I-Tai Lu1Enoch Lu2Department of ECE, Polytechnic Institute of NYU, 6 Metrotech Center, Brooklyn, NY 11201, USADepartment of ECE, Polytechnic Institute of NYU, 6 Metrotech Center, Brooklyn, NY 11201, USADepartment of ECE, Polytechnic Institute of NYU, 6 Metrotech Center, Brooklyn, NY 11201, USAThe robust-generalized iterative approach (Robust-GIA), robust-fast iterative approach (Robust-FIA), and robust-decoder covariance optimization approach (Robust-DCOA) are proposed for designing MMSE transceivers of downlink multicell multiuser MIMO systems with per-cell and per-antenna power constraints and possibly imperfect channel state information. The Robust-DCOA is the most restrictive but is always optimum, the Robust-GIA is the most general, and the Robust-FIA is the most efficient. When the Robust-DCOA is applicable and the decoder covariance matrices are full rank, the three proposed approaches are equivalent and all provide the optimum solution. Numerical results show that the proposed robust approaches outperform their non-robust counterparts in various single-cell and multicell examples with different system configurations, channel correlations, power constraints, and cooperation scenarios. Moreover, performances of the robust approaches are insensitive to estimation errors of channel statistics (correlations and path loss). With cell-cooperation, cell edge interference problems can be remedied without reducing the number of data streams by using the proposed robust approaches.http://dx.doi.org/10.1155/2010/815704 |
| spellingShingle | Jialing Li I-Tai Lu Enoch Lu Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation International Journal of Digital Multimedia Broadcasting |
| title | Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation |
| title_full | Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation |
| title_fullStr | Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation |
| title_full_unstemmed | Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation |
| title_short | Robust MMSE Transceiver Designs for Downlink MIMO Systems with Multicell Cooperation |
| title_sort | robust mmse transceiver designs for downlink mimo systems with multicell cooperation |
| url | http://dx.doi.org/10.1155/2010/815704 |
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