Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback

We minimize average transmit power with finite-rate feedback for coherent communications in a wireless sensor network (WSN), where sensors communicate with a fusion center using adaptive modulation and coding over a wireless fading channel. By viewing the coherent WSN setup as a distributed space¿ti...

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Detalles Bibliográficos
Autores: Marques, Antonio G., Wang, Xin, Giannakis, Georgios B.
Tipo de recurso: artículo
Fecha de publicación:2008
País:España
Institución:Universidad Rey Juan Carlos
Repositorio:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
OAI Identifier:oai:burjcdigital.urjc.es:10115/1806
Acceso en línea:http://hdl.handle.net/10115/1806
Access Level:acceso abierto
Palabra clave:Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
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spelling Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate FeedbackMarques, Antonio G.Wang, XinGiannakis, Georgios B.Telecomunicaciones3325 Tecnología de las TelecomunicacionesWe minimize average transmit power with finite-rate feedback for coherent communications in a wireless sensor network (WSN), where sensors communicate with a fusion center using adaptive modulation and coding over a wireless fading channel. By viewing the coherent WSN setup as a distributed space¿time multiple-input single-output (MISO) system, we present optimal distributed beamforming and resource allocation strategies when the full (F-) channel state information at the transmitters (CSIT) is available through a feedback channel. We also develop optimal adaptive transmission policies and design optimal quantizers for the finite-rate feedback case where the sensors only have quantized (Q-) CSIT, or, each sensor has F-CSIT of its own link with the FC but only Q-CSIT of other sensors. Numerical results confirm that our novel finite-rate feedback-based strategies achieve near-optimal power savings based on even a small number of feedback bits.Work in this paper was supported by the ARO Grant W911NF-05-1-0283 and was prepared through collaborative participation in the Communications and Networks Consortium sponsored by the U.S. Army Research Laboratory under the Collaborative Technology Alliance Program, Cooperative Agreement DAAD19-01-2-0011. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation thereon. The work of A. G. Marques in this paper was partially supported by the C.A. Madrid Government Grant P-TIC-000223-0505.Teoría de la Señal y ComunicacionesIEEE200920092008info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10115/1806reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlosinstname:Universidad Rey Juan CarlosInglésAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:burjcdigital.urjc.es:10115/18062026-06-24T12:48:17Z
dc.title.none.fl_str_mv Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
title Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
spellingShingle Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
Marques, Antonio G.
Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
title_short Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
title_full Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
title_fullStr Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
title_full_unstemmed Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
title_sort Minimizing Transmit-Power for Coherent Communications in Wireless Sensor Networks with Finite-Rate Feedback
dc.creator.none.fl_str_mv Marques, Antonio G.
Wang, Xin
Giannakis, Georgios B.
author Marques, Antonio G.
author_facet Marques, Antonio G.
Wang, Xin
Giannakis, Georgios B.
author_role author
author2 Wang, Xin
Giannakis, Georgios B.
author2_role author
author
dc.subject.none.fl_str_mv Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
topic Telecomunicaciones
3325 Tecnología de las Telecomunicaciones
description We minimize average transmit power with finite-rate feedback for coherent communications in a wireless sensor network (WSN), where sensors communicate with a fusion center using adaptive modulation and coding over a wireless fading channel. By viewing the coherent WSN setup as a distributed space¿time multiple-input single-output (MISO) system, we present optimal distributed beamforming and resource allocation strategies when the full (F-) channel state information at the transmitters (CSIT) is available through a feedback channel. We also develop optimal adaptive transmission policies and design optimal quantizers for the finite-rate feedback case where the sensors only have quantized (Q-) CSIT, or, each sensor has F-CSIT of its own link with the FC but only Q-CSIT of other sensors. Numerical results confirm that our novel finite-rate feedback-based strategies achieve near-optimal power savings based on even a small number of feedback bits.
publishDate 2008
dc.date.none.fl_str_mv 2008
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10115/1806
url http://hdl.handle.net/10115/1806
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IEEE
publisher.none.fl_str_mv IEEE
dc.source.none.fl_str_mv reponame:BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
instname:Universidad Rey Juan Carlos
instname_str Universidad Rey Juan Carlos
reponame_str BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
collection BURJC-Digital. Repositorio Institucional de la Universidad Rey Juan Carlos
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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