VDSL MODEM的設計.pdf

1、電子科技大學碩士學位論文VDSLMODEM的設計姓名：張曉健申請學位級別：碩士專業(yè)：計算機技術指導教師：秦志光20031107電子科技大學工程碩士學位論文AbstractFollowingthedevelopmentoftheInternet，BroadbandAccesstechnologyhasbecomeimperativeNowthepopularBroadbandAccesstechnologyisxDSL，CableMode

2、m，EthemetdirectenteretcInxDSLfamilytheVDSLhastheveryhigherdataratesItsdownstreamandupstreamratesCanupto13Mbpsatthesametime，andholdsmorelotinatheBroadbandAccessmarketMycompanyempoldertheVDSLequipmentaccordingtothedemandin

3、gofmarket，IdirectthedesigningofVDSLModem，andaccomplishthisthesisaccordingasmyworkTheaimofmythesisisexpatiatehowtoempolderanddesigntheVDSLModemequipmentTheequipmentcanbedividedintotwokindofModemaccordingassetupofchipanddi

4、fferentcomponent：OneisCustomerPremisesEquipment(CPE)，it’SmainpurposeisconnecttoCOequipmentofVDSLviaunshieldedtwistedpaired，composingaVDSLBroadbandnet；TheanothermodemisCentralOffice(CO)，it’Smainpurposeiscomposingpointtopo

5、intconnectwithCPEModem，realizingEthernetframetransmitvialine(UTP)Theinvestigatemeansofthisitemisusing10BaseSsolutionsofInfineonCoinGermanyAtsametime，itdesignappropriatehardwareelectrocircuitandmanipulativeprogramaccordin

6、gasfunctionrequirementThe10BaseSisachipsetsolutionswhichtransmitEthernetframeonlineusingVDSLtechnologyBothCOandCPEequipment’SallexitsignalwiththisschemeisEthernetflamethe10BaseSchipsetconversiontheEthernetframetoVDSLfram

7、e，andmodulatetoanalogsignalsSOthatCantransmitsignalsonlineTheitem’SfinallyproductionofCPEandCOModemhavesucceededandpassedtestingItcantransmitto16kmfarthestwhenthedownstreamandupstreamrateis4M／1Mbps，whenthedownstreamandup