Title:
Lattice-reduction-aideddetection
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Description: Toovercomethedrawbackthatthediversityorderofthetraditionallinear MMSEdetection
algorithmdecreaseswiththeincreaseofthecorrelationcoefficient,alattice-reduction-aidedMMSE(LRAMMSE)
detectionalgorithmisproposedforspatialcorrelatedMIMOchannels.TheLRA-MMSEdetection
algorithmconsiderstheeffectofspatialcorrelationinthealgorithm designandtakesadvantageofthe
complexLenstra-Lenstra-Lovász(LLL)algorithmsothatitsBER(biterrorrate)isseveralordersof
magnitudesmallerthanthatofthetraditionallinearMMSEdetectionatahighSNR(signaltonoiseratio).
Theoreticalanalysisandsimulationresultsshowthatwith QPSK modulationandthe MMSEchannel
estimatoratthereceiver,theuncodedBERoftheLRA-MMSEdetectorislowerthanthatofthetraditional
linearMMSEdetectorifthebitSNR(Eb/N0)isgreaterthan18dB,whilethecodedBERoftheLRAMMSEdetectorislowerthanthatofthetraditionallinearMMSEdetectorifEb/
N0isgreaterthan16dB
when(2,1,3)convolutionalchannelcodingandViterbidecodingareadoptedundertheKroneckercorrelated
flatfadingchannel.Furthermo
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Lattice-reduction-aideddetection.pdf
