Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes
Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop mod...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Hämäläinen, Jyri [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2009 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media, LLC. 2009 |
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| Übergeordnetes Werk: |
Enthalten in: Wireless personal communications - Springer US, 1994, 54(2009), 3 vom: 27. Mai, Seite 467-484 |
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volume:54 ; year:2009 ; number:3 ; day:27 ; month:05 ; pages:467-484 |
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10.1007/s11277-009-9735-y |
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| 520 | |a Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. | ||
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| 700 | 1 | |a Corral-Briones, Graciela |4 aut | |
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10.1007/s11277-009-9735-y doi (DE-627)OLC2053764724 (DE-He213)s11277-009-9735-y-p DE-627 ger DE-627 rakwb eng 620 VZ Hämäläinen, Jyri verfasserin aut Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC. 2009 Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. Transmit diversity Imperfect channel feedback UTRA FDD Wichman, Risto aut Dowhuszko, Alexis A. aut Corral-Briones, Graciela aut Enthalten in Wireless personal communications Springer US, 1994 54(2009), 3 vom: 27. Mai, Seite 467-484 (DE-627)188950273 (DE-600)1287489-9 (DE-576)049958909 0929-6212 nnns volume:54 year:2009 number:3 day:27 month:05 pages:467-484 https://doi.org/10.1007/s11277-009-9735-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-MKW GBV_ILN_70 GBV_ILN_2006 GBV_ILN_4266 GBV_ILN_4307 AR 54 2009 3 27 05 467-484 |
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10.1007/s11277-009-9735-y doi (DE-627)OLC2053764724 (DE-He213)s11277-009-9735-y-p DE-627 ger DE-627 rakwb eng 620 VZ Hämäläinen, Jyri verfasserin aut Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC. 2009 Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. Transmit diversity Imperfect channel feedback UTRA FDD Wichman, Risto aut Dowhuszko, Alexis A. aut Corral-Briones, Graciela aut Enthalten in Wireless personal communications Springer US, 1994 54(2009), 3 vom: 27. Mai, Seite 467-484 (DE-627)188950273 (DE-600)1287489-9 (DE-576)049958909 0929-6212 nnns volume:54 year:2009 number:3 day:27 month:05 pages:467-484 https://doi.org/10.1007/s11277-009-9735-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-MKW GBV_ILN_70 GBV_ILN_2006 GBV_ILN_4266 GBV_ILN_4307 AR 54 2009 3 27 05 467-484 |
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10.1007/s11277-009-9735-y doi (DE-627)OLC2053764724 (DE-He213)s11277-009-9735-y-p DE-627 ger DE-627 rakwb eng 620 VZ Hämäläinen, Jyri verfasserin aut Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC. 2009 Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. Transmit diversity Imperfect channel feedback UTRA FDD Wichman, Risto aut Dowhuszko, Alexis A. aut Corral-Briones, Graciela aut Enthalten in Wireless personal communications Springer US, 1994 54(2009), 3 vom: 27. Mai, Seite 467-484 (DE-627)188950273 (DE-600)1287489-9 (DE-576)049958909 0929-6212 nnns volume:54 year:2009 number:3 day:27 month:05 pages:467-484 https://doi.org/10.1007/s11277-009-9735-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-MKW GBV_ILN_70 GBV_ILN_2006 GBV_ILN_4266 GBV_ILN_4307 AR 54 2009 3 27 05 467-484 |
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10.1007/s11277-009-9735-y doi (DE-627)OLC2053764724 (DE-He213)s11277-009-9735-y-p DE-627 ger DE-627 rakwb eng 620 VZ Hämäläinen, Jyri verfasserin aut Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes 2009 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, LLC. 2009 Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. Transmit diversity Imperfect channel feedback UTRA FDD Wichman, Risto aut Dowhuszko, Alexis A. aut Corral-Briones, Graciela aut Enthalten in Wireless personal communications Springer US, 1994 54(2009), 3 vom: 27. Mai, Seite 467-484 (DE-627)188950273 (DE-600)1287489-9 (DE-576)049958909 0929-6212 nnns volume:54 year:2009 number:3 day:27 month:05 pages:467-484 https://doi.org/10.1007/s11277-009-9735-y lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-MKW GBV_ILN_70 GBV_ILN_2006 GBV_ILN_4266 GBV_ILN_4307 AR 54 2009 3 27 05 467-484 |
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Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes |
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Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. © Springer Science+Business Media, LLC. 2009 |
| abstractGer |
Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. © Springer Science+Business Media, LLC. 2009 |
| abstract_unstemmed |
Abstract Transmit diversity techniques have received a lot of attention recently, and open-loop and closed-loop downlink transmit diversity modes for two transmit antennae have been included into universal terrestrial radio access (UTRA) frequency division duplex (FDD) specification. Closed-loop modes provide larger system capacity than open-loop modes, but they need additional side information of the downlink channel in the transmitter. In FDD systems this requires a separate feedback channel. Quantization of channel state information (CSI) in closed-loop transmit diversity schemes decreases the performance when compared to a closed-loop system where the transmitter has access to complete CSI. In this paper, we analyze the effect of quantization of CSI and deduce approximate capacity formulae for closed-loop transmit diversity schemes that are generalizations of the closed-loop schemes included in UTRA FDD specification. Moreover, we calculate approximation error and show by simulations that our approximation is tight for flat Rayleigh fading environments with and without fast transmit power control. © Springer Science+Business Media, LLC. 2009 |
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Capacity of Generalized UTRA FDD Closed-Loop Transmit Diversity Modes |
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Wichman, Risto Dowhuszko, Alexis A. Corral-Briones, Graciela |
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