Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel-中国期刊网

摘要 Basedonthetheoryofmulticarrier(MC)techniqueandtheRakereceiver,amulticarrierDSCDMARakesystemisproposed,whereadatasequencemultipliedbyaspreadingsequencemodulatesmultiplecarriers.ThereceiverprovidesaRakeforeachsubcarrier,andtheoutputsoftheRakesarecombinedbyamaximal-ratiocombiner.Theaverageprobabilityoferrorofthesystemisderivedfromanuncorrelatedsubcarrierandfrequency-selectivefadingchannelmodel.ThesystemperformancesareevaluatedoverRayleighfadingchannelwithanexponentialmultipathintensityprofile(MIP)andwitharectangularMIP,respectively,whenmultipathinterferenceispresent.ItisfoundthatthiskindofmodelhaslargersuperiorityinanexponentialMIPthaninarectangularMIP.

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Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel

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Performance of Multicarrier CDMA Rake System over Rayleigh Fading Channel

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