Garcia Marques, AntonioWang, XinGiannakis, Georgios B.2009-06-222009-06-222006-11-014244-0785http://hdl.handle.net/10115/2230By viewing the coherent wireless sensor network (WSN) setup as a distributed space-time multi-input singleoutput (MISO) system, we minimize average transmit-power when sensors communicate with a fusion center (FC) using adaptive modulation and coding over a wireless fading channel. To this end, we derive optimal distributed beamforming and resource allocation strategies when the full (F-) channel state information at the transmitters (CSIT) is available, or, each sensor has F-CSIT of its own link with the FC but only quantized CSIT of other sensors through finite-rate feedback. Numerical results are presented to evaluate the power savings of the novel strategies.enTelecomunicacionesinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess3307 Tecnología Electrónica