Threshold-based piecewise companding transform for PAPR reduction in OFDM systems-中国Betway体育网页登陆

摘要 Piecewisecompandingtransformisaflexibleandefficientwaytosolvethehighpeak-to-averagepowerratio(PAPR)problemfororthogonalfrequencydivisionmultiplexing(OFDM)systems.Anovelthreshold-basedpiecewisecompandingtransformisproposedinthispaper.Basedonthestatisticalcharacteristicsofamplitudes,OFDMsignalsareclassifiedintothreegroups(i.e.,small,averageandlargesignals).Differentfromconventionalapproaches,twodedicateddesignedthresholdsaresettoamplifythesmallsignalsandcompressthelargesignals,respectively.SimulationresultsverifytheimprovementinPAPRreductionoftheproposedscheme.Moreover,alowerbiterrorrate(BER)performancelosscanbeobtainedbyintroducingtheiterativedetectionwithamoderateincreaseincomplexity.

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Threshold-based piecewise companding transform for PAPR reduction in OFDM systems

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