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dc.contributor.authorTeodoro, Sarapt
dc.contributor.authorSilva, Adãopt
dc.contributor.authorGil, João
dc.contributor.authorGameiro, Atíliopt
dc.description.abstractIt is widely recognized that the use of multiple antennas will be a key point for the implementation of future wireless systems. However, in a large number of cases, due to size and complexity constraints, it is impractical to implement multiple antenna transceivers. In this paper we analyze a Virtual MIMO system with 2 transmit antennas, 1 receive antenna and 2 cooperative relays, using Alamouti coding. Two types of relays are studied when applied to this scheme: ‘Equalize and Forward’ and ‘Amplify and Forward’. The instantaneous capacity for both systems are derived, average and outage capacities are compared with the Alamouti scheme applied with collocated antennas and conventional SISO system. Numerical results show that virtual Alamouti is better when using EF relays, in most realistic scenarios. With AF relays, VAA is still be better than the Alamouti scheme, for scenarios with slightly higher values of path loss
dc.subjectVirtual Antenna Arraypt
dc.subjectCooperative Diversitypt
dc.subjectEqualize and Forwardpt
dc.subjectAmplify and Forwardpt
dc.subjectAlamouti Codingpt
dc.subjectErgodic and Outage Capacitypt
dc.titleCapacity comparison between alamouti and cooperative VAA with EF and AF Relayspt
ua.event.date10 - 12 June 2008pt
degois.publication.titleICT-MobileSummit 2008-*
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