基于水下圖像傳輸?shù)穆?lián)合信源信道編碼研究.pdf

1、廈門大學(xué)碩士學(xué)位論文基于水下圖像傳輸?shù)穆?lián)合信源信道編碼研究姓名：朱錦華申請學(xué)位級別：碩士專業(yè)：無線電物理指導(dǎo)教師：許茹20060501AbstractUnderwateracousticfUWA)channelisacomplextime一，space—and行equency—variantchannel，whichisrestrictedbynumbersofnegativefactors，egBarrowband，highambie

2、ntnoise，multipathdistortionanddeepfadingSotealizethehighefficiencyandrealtimetransmissionofimagewithgreatdataquantityitwillrefertobothsourcecodingandchannelcodingRecentlyalongwitllthedevelopmentofmultimediawirelesscommun

3、icationtheJointSourceandChannelCodingreceivesmoreandmoreattentionandbecomestheimportantsubjectinthecodingtheoryresearchInthefadingchannelwithhighnoise，egmobilecommunicationchannelandUWAchannel，JSCCgetsbetterperformanceth

4、anseparatedcodingToaimattheimagetransmissioninUWAcommunicationsystem，thispaperpresentsjointsourceandchannelcodingapproachwhichtakesadvantageofthesuperiorperformanceofTurbo—codesandthepropertyofSPECKInaddition，combinedwit

5、hOFDMtechnologytheimagetransmissionsysteminUWAchanneliss甙upThispaperproposesunequalerrorprotectfortheprogressivecompressedimagedataaccordingtoerrorsensitivenessThischannelcodingbasedonsourceutilizesthepropertyofcompresse

6、ddatawhichgeneratedinorderofimportance，andimprovesthelimitationtoerrorsensitivityStudiesalsoshowthatthemethodcangetbetterbalancebetweenbiterrorrateandcodelength，andtheimagecangetbetterantinoisepropertyTheinnovationofthis

7、paperisputtingforththetechnologyofjointsourceandchannelcodinginimagetransmissionintheunderwateracousticchannelAnditisanactiveattemptthatthejointsourceandchannelcodingcombineswithOFDMtechnologytoinsureimagetransmissionwit