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Inthispaper,aninter-orthogonalfrequencydivisionmultiplexing(OFDM)sub-carrierdistortionduetofiberchromatic dispersion is investigated. The fiber chromatic dispersion induces phase difference among OFDMsub-carriers,resultinginnon-symmetricpeaktoaveragepowerratio(PAPR)inducinginter-OFDMdistortion.Experimentstoconfirmthefiberdispersionareperformedinadirect-detectionopticalfront-haullink.Quadraturephaseshiftkeying(QPSK)encodedOFDMsymbolsat25Gbit/saretransmittedover100kmfiberandtheresultingerrorvectormagnitude(EVM)of40%isobserved.           (OFDM: orthogonal frequency divisionmultiplexing).OFDM,OFDM..4Gbit/sQPSK-OFDM,100kmEVM40%.Keywords:dispersion,mobilefront-haul,orthogonalfrequencydivisionmultiplexing,peaktoaveragepowerratio,quadratureamplitudemodulation*Dept.ofElectronicsEngineering,MyongjiUniversity ★C o re spn dig auth( @mj .ck

Degradation of OFDM Signal Performance by Chromatic Dispersion in a Several 10 Gbit/s Mobile Front-haul Link