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

  • 标签: LDPC 编码系统 FMT系统 频率选择通道 滤波器