PERFORMANCE OF LDPC CODED FMT SYSTEMS OVER FREQUENCY SELECTIVE FADING CHANNEL-中国期刊网

摘要 ThispaperproposestheLowDensityParityCheck(LDPC)codedFilteredMultiTone(FMT)systemswithhigh-ordermodulationforthehighdataratereliabletransmissionoverfrequencyselectivefadingchannel.ForthepurposeofaccomplishingsoftinputsoftoutputiterativedecodingofLDPCcodes,anewsoftdecisionmetricgenerationmethodisproposed,whichobviatestheneedofthenoisevarianceestimation,forM-PSK/M-QAM-typehigh-ordermodulationoverfrequencyselectivefadingchannel.Computersimulationindicatesthat,thereisnoperformancelosswithournewmetric,butthecomplexityofimplementationisreduced,andthattheLDPCcodesareeffectivetoimprovetheBitErrorRate(BER)ofFMTinfrequencyselectivefadingchannel.

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PERFORMANCE OF LDPC CODED FMT SYSTEMS OVER FREQUENCY SELECTIVE FADING CHANNEL

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PERFORMANCE OF LDPC CODED FMT SYSTEMS OVER FREQUENCY SELECTIVE FADING CHANNEL

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