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dc.contributor.authorMuñoz Medina, Olga
dc.contributor.authorVidal Manzano, José
dc.contributor.authorAgustín de Dios, Adrián
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationMuñoz Medina, O.; Vidal Manzano, J.; Agustín de Dios, A. Linear transceiver design in nonregenerative relays with channel state information. IEEE Transactions on Signal Processing. 2007, vol 55, núm. 5, p. 2593-2064.
dc.description.abstractThis paper deals with the design of nonregenerative relaying transceivers in cooperative systems where channel state information (CSI) is available at the relay station. The conventional nonregenerative approach is the amplify and forward (A&F) approach, where the signal received at the relay is simply amplified and retransmitted. In this paper, we propose an alternative linear transceiver design for nonregenerative relaying (including pure relaying and the cooperative transmission cases), making proper use of CSI at the relay station. Specifically, we design the optimum linear filtering performed on the data to be forwarded at the relay. As optimization criteria, we have considered the maximization of mutual information (that provides an information rate for which reliable communication is possible) for a given available transmission power at the relay station. Three different levels of CSI can be considered at the relay station: only first hop channel information (between the source and relay); first hop channel and second hop channel (between relay and destination) information, or a third situation where the relay may have complete cooperative channel information including all the links: first and second hop channels and also the direct channel between source and destination. Despite the latter being a more unrealistic situation, since it requires the destination to inform the relay station about the direct channel, it is useful as an upper benchmark. In this paper, we consider the last two cases relating to CSI.We compare the performance so obtained with the performance for the conventional A&F approach, and also with the performance of regenerative relays and direct noncooperative transmission for two particular cases: narrowband multiple-input multiple-output transceivers and wideband single input single output orthogonal frequency division multiplex transmissions.
dc.format.extent12 pàg.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal
dc.subject.lcshWireless communication systems
dc.subject.lcshMathematical optimization
dc.subject.otherAmplify-and-forward approach
dc.subject.otherBroadband networks
dc.subject.otherCooperative systems
dc.subject.otherCooperative transmission case
dc.subject.otherCooperative channel information
dc.subject.otherDirect noncooperative transmission
dc.subject.otherFiltering theory
dc.subject.otherFirst hop channel information
dc.subject.otherLinear transceiver design
dc.subject.otherMutual information maximization
dc.subject.otherNonregenerative relaying transceiver
dc.subject.otherOptimum linear filtering
dc.subject.otherOrthogonal frequency division multiplex transmission
dc.subject.otherPure relaying case
dc.subject.otherWideband single input single output multiplex transmission
dc.subject.otherWireless channels
dc.subject.otherMIMO communication
dc.subject.otherOFDM modulation
dc.titleLinear transceiver design in nonregenerative relays with channel state information
dc.subject.lemacComunicació sense fil, Sistemes de
dc.subject.lemacOptimització matemàtica
dc.contributor.groupUniversitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.relation.projectidcttTEC 2004-04526

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