資源描述：
《光突發(fā)交換網(wǎng)絡(luò)的光突發(fā)技術(shù)實(shí)現(xiàn)及基于TCP的網(wǎng)絡(luò)性能分析》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、北京郵電大學(xué)博士學(xué)位論文光突發(fā)交換網(wǎng)絡(luò)的光突發(fā)技術(shù)實(shí)現(xiàn)及基于TCP的網(wǎng)絡(luò)性能分析姓名：焦碩申請(qǐng)學(xué)位級(jí)別：博士專業(yè)：電磁場(chǎng)與微波技術(shù)指導(dǎo)教師：林金桐20050901問(wèn)題。仿真結(jié)果表明該方案能有效避免TcP性能的退化。◆對(duì)OBS網(wǎng)絡(luò)環(huán)境下的TCP吞吐量進(jìn)行了數(shù)學(xué)建模分析，并考慮了TCP確認(rèn)的丟失對(duì)吞吐量造成的影響。仿真與計(jì)算結(jié)果的比較表明該模型的最大估算偏差在+27％范圍內(nèi)，而以往的數(shù)學(xué)模型基于TcP確認(rèn)無(wú)丟失的假設(shè)，其計(jì)算結(jié)果與仿真結(jié)果的最大偏差達(dá)到100％。仿真結(jié)果與數(shù)值計(jì)算結(jié)果吻合，這表明本文所建立的TCP吞吐量模型能準(zhǔn)確反映OBS網(wǎng)絡(luò)環(huán)境下TcP性能退化的特點(diǎn)，可以更準(zhǔn)確
2、地分析驗(yàn)證OBs網(wǎng)絡(luò)環(huán)境下TcP的各種性能變化。關(guān)鍵字：光突發(fā)交換，網(wǎng)絡(luò)同步，sDRAM綁定，交流耦合，突發(fā)模式，光接收機(jī)，TCP，退化，建模AbstractOpticaIburstsw“chingisproposedtomakegooduseofthehugebandwidthpr0Videdbydensewavelengm*divisionmul廿plexing(DwDM)technolo斟Ithasamediumswitchinggranular姆bet、veenthoseofthe叩ticalcircuitswitching(OCS)a工ldmeopticalpack
3、etsWjtching(oPS)．OBSismuchmorenexjblethanOCSandmain詛inshighusageofthebandwid小intheOpticalfibeLAtthes鋤etimenismorepracticablethaIlOPStechn0109y．Combiningtheadvan詛gesofthetwoOp戧calswitchhgschernesandavoidingmeirdisadVantages，oBSissuchapromisingparadigmtobecomethekeyswitchingtechnologyf醣thenex
4、t{ener“onopticalIntemet．Therearet、vokeyissuesofopticalburstswitching(oBS)technologydiscussedjnthisdissemtion．oneisthephysical1ayeftechn0109iesOfOBS，includjngt11eopticalbursttransmission，theopticalburstrecei“nga王1dtheschemeOfne“VOrksynchmnizationinOBSnetⅥ^0rks．TheoulerismeirllpactofOBSscheme
5、sOn付1euplayerprotocols．TheperforfrIancesofthefourTcPs，Taboe，Reno，NewReno姐dSack，areevaluaIedforsuchpurpose．Tobe百nwith，thehistoryoftheopticalswit洲ngtechnolo百esjsreviewed．ThenabriefintroductionofmedeVelopmentofOBSisgiven，includingttlephysicallayertechnologiesofOBSandtheissuesofsupponingTCPinOB
6、Snetworks．◆Inthesecondpanofthedisserta曲n，thephysicallayertechnologiesof0BsareinVestigated．F勰ly，the1．25Gbpsburstmodeoptical廿ansmi仕erisdes咖ed．Theextinctionratioofthetransminerjs10—15dB，thejitceris60psp-pillburstmodeand30psp-pincontinuousmode，and也elaser’sOn，ofrdelay遠(yuǎn)less血an8rIS．IIladdhioIl’t0i
7、mplcmentmeo凰ettheinOBs，amodulecalled矗m嘲升am腳心幻"c。H加地risdesignedinthetransmitcerbythe最eld—progmmmablegatearrays∽GA)a11ds”chronousDRAM(sDRAM)，a11daschemee而Ⅱed-gDR4M肋阼馥略isdeVeIopedt0makeFPGAcommunica：cewithSDRAMsinful!duplexmode．Testresunsshawmat饑etimingbias
