基于衛(wèi)星通信的高速糾錯碼研究及其FPGA實現(xiàn).pdf

1、西安電子科技大學碩士學位論文基于衛(wèi)星通信的高速糾錯碼研究及其FPGA實現(xiàn)姓名：彭克蓉申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：宮豐奎201201Abs仃actAfterthedevelopmentofmorethanhalfacenturysatellitecommunicationhasgraduallybecomeanimportantschemeformanyapplications，includinglongdistanc

2、ecommunications，militarycommunicationsandpersonalcommunicationsAsaneffectivetechnologywhichguaranteesthereliabletransmissionECCO三rrorCorrectCode)hasbeendevelopedfromtheconvolutioncodetScode，TurbocodeandU)PCcode，andtoward

3、codecombinationForitsstrongerrorcorrectionabilityconvenientconstructionandsimpleencoding，conventionalRS(ReedSolomon)codeisoneofECCscommonlyusedinsatellitecommunicationAmongvariousRScodes，RS(255，223)recommendbyCCSDSisespe

4、ciallywidelyusedInviewofthedemandofgrowingdatarateofthesatellitecommunications，thisthesisdesignedahighspeedRSencoderanddecoderbyusingthegloball℃verscclockandallmodifiedmultiplierwithoutmorehardwareresourcesconsmnptionRes

5、ultsshowthatthethroughputoftheencoderis448Gbps，andthethroughputofthedecoderCallbeupto296GbpsOntheotherhand，thelowdensityparitycodes(LDPC)，whichCanapproximatelyreachtheShannonlimithavebecomethehotspotinsatellitecommunicat

6、ions，andwaswidelyusedinthelatestsatellitestandards，suchasCCSDS，DVBS2，eta1Forn磚LDPCusedinDVBS2itisdifficulttoberealizedduetoitslongcodewordandvariouscoderatesInviewofthehugeresourceconsumptionandlowthroughputofdataahighsp

7、eeaparallelLDPCdecoderisproposedforitsFPGArealizationbyusingthenormalizedsumr疵algoriltmaWith180parallels6bitwidthsand20iterationsfiledecoderc鋤supportafrequencyastligh部2089MHzandathroughputof340MbpsaeeordiIlgtoourtestingr