Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments
The classical detection techniques for multiple-input multiple-output (MIMO) systems are usually designed with the assumption that the additive complex Gaussian noise is uncorrelated. However, for closely spaced antennas, the additive noise is correlated due to the mutual antenna coupling. This lett...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Computer Networks and Communications |
| Online Access: | http://dx.doi.org/10.1155/2014/720546 |
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| _version_ | 1849304933311971328 |
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| author | Mohamed Lassaad Ammari Paul Fortier |
| author_facet | Mohamed Lassaad Ammari Paul Fortier |
| author_sort | Mohamed Lassaad Ammari |
| collection | DOAJ |
| description | The classical detection techniques for multiple-input multiple-output (MIMO) systems are usually designed with the assumption that the additive complex Gaussian noise is uncorrelated. However, for closely spaced antennas, the additive noise is correlated due to the mutual antenna coupling. This letter analyzes an improved zero-forcing (ZF) technique for MIMO channels in colored environments. The additive noise is assumed to be correlated and the Rayleigh MIMO channel is considered doubly correlated. The improved ZF detector, based on the generalized least squares estimator (GLS), takes into account the noise covariance matrix and provides an unbiased estimator of the transmitted symbol vectors. We introduce some novel bounds on the achievable sum rate, on the normalized mean square error at the receiver output, and on the outage probability. The derived expressions are compared to Monte Carlo simulations. |
| format | Article |
| id | doaj-art-3b1731d2839b41aabc7748191e682e43 |
| institution | Kabale University |
| issn | 2090-7141 2090-715X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Computer Networks and Communications |
| spelling | doaj-art-3b1731d2839b41aabc7748191e682e432025-08-20T03:55:36ZengWileyJournal of Computer Networks and Communications2090-71412090-715X2014-01-01201410.1155/2014/720546720546Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored EnvironmentsMohamed Lassaad Ammari0Paul Fortier1Department of Electrical and Computer Engineering, Laval University, Quebec City, QC, G1V 0A6, CanadaDepartment of Electrical and Computer Engineering, Laval University, Quebec City, QC, G1V 0A6, CanadaThe classical detection techniques for multiple-input multiple-output (MIMO) systems are usually designed with the assumption that the additive complex Gaussian noise is uncorrelated. However, for closely spaced antennas, the additive noise is correlated due to the mutual antenna coupling. This letter analyzes an improved zero-forcing (ZF) technique for MIMO channels in colored environments. The additive noise is assumed to be correlated and the Rayleigh MIMO channel is considered doubly correlated. The improved ZF detector, based on the generalized least squares estimator (GLS), takes into account the noise covariance matrix and provides an unbiased estimator of the transmitted symbol vectors. We introduce some novel bounds on the achievable sum rate, on the normalized mean square error at the receiver output, and on the outage probability. The derived expressions are compared to Monte Carlo simulations.http://dx.doi.org/10.1155/2014/720546 |
| spellingShingle | Mohamed Lassaad Ammari Paul Fortier Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments Journal of Computer Networks and Communications |
| title | Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments |
| title_full | Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments |
| title_fullStr | Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments |
| title_full_unstemmed | Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments |
| title_short | Analysis of MIMO Receiver Using Generalized Least Squares Method in Colored Environments |
| title_sort | analysis of mimo receiver using generalized least squares method in colored environments |
| url | http://dx.doi.org/10.1155/2014/720546 |
| work_keys_str_mv | AT mohamedlassaadammari analysisofmimoreceiverusinggeneralizedleastsquaresmethodincoloredenvironments AT paulfortier analysisofmimoreceiverusinggeneralizedleastsquaresmethodincoloredenvironments |