Umzobo we-6-6 ngumzobo webhloko wenkqubo yokuhanjiswa kwesignali ye-digital baseband eqhelekileyo. Ubukhulu becala iqulunqwe sisihluzo sokuthumela (ijenereyitha yesiginali yetshaneli), itshaneli, ukufumana isihluzo kunye nesigqibo sesampulu. Ukuze kuqinisekiswe umsebenzi othembekileyo nocwangcisiweyo wenkqubo, kufuneka kwakhona kubekho inkqubo ehambelanayo.
Imisebenzi yebhokisi nganye kumzobo kunye nenkqubo ebonakalayo yokuhanjiswa komqondiso ichazwa ngolu hlobo lulandelayo:
(1) Ijenereyitha yesiginali yesijelo (ukuhambisa isihluzi). Umsebenzi wayo kukuvelisa i-baseband signal waveform elungele ukuhanjiswa kwejelo. Ngenxa yokuba igalelo ngokuqhelekileyo ikhowudi yothumelo eyenziwa yikhowudi yekhowudi, i-waveform esisiseko ehambelanayo idla ngokuba yi-pulse rectangular, kwaye i-spectrum yayo ibanzi kakhulu, engafanelekanga ukuhanjiswa. Isihluzi sothumelo sisetyenziselwa ukucinezela ibhendi yegalelo lomqondiso wesantya kunye nokuguqula ikhowudi yokuhambisa ibe yi-baseband signal waveform ilungele ukuhanjiswa kwetshaneli.
(2) Umjelo. Ingumendi ovumela imiqondiso ye-baseband ukuba idlule, ngokuqhelekileyo itshaneli enentambo, efana ne-twisted pair, i-coaxial cable, njl. njl. yokuhanjiswa kwamaza. Ukongeza, itshaneli yazisa ingxolo n(t) kwaye ithatha ukuba yingxolo emhlophe yeGaussian enentsingiselo ye-zero.
(3) Ukufumana isihluzo. Isetyenziselwa ukufumana umqondiso, ukuhluza ingxolo yetshaneli kunye nolunye uphazamiseko kangangoko kunokwenzeka, ukulungelelanisa iimpawu zetshaneli, kunye nokwenza i-baseband waveform ephumayo incede kwisigqibo sesampulu.
(4) Isigqibo sesampuli. Ngaphantsi kwemvelaphi yeempawu zothumelo ezingonelisiyo kunye nengxolo, i-wave wave yesihluzo esifumanayo isampuliwe ngexesha elichaziweyo (elilawulwa yi-pulse yexesha elincinci) ukubuyisela okanye ukuvuselela umqondiso we-baseband.
(5) Ixesha le-pulse kunye ne-synchronous extraction. I-bit timeing pulse esetyenziselwa isampuli ikhutshwe kwisignali efunyenwe yi-synchronous extraction circuit, kwaye ukuchaneka kwexesha elincinci kuya kuchaphazela ngokuthe ngqo umphumo wesigqibo.
Lo nguShenzhenHDV Phoi-electron Iteknoloji Ltd ukukuzisela malunga "Ukubunjwa kwenkqubo yedijithali baseband yokuhambisa umqondiso", ithemba ukukunceda, kunye ShenzhenHDV Phoi-electron Technology Ltd ukongezaI-ONUuthotho, uthotho lwe-transceiver,OLTseries, kodwa kwakhona ukuvelisa uthotho imodyuli, ezifana: Unxibelelwano imodyuli optical, imodyuli yonxibelelwano optical, network module optical, imodyuli yonxibelelwano optical, imodyuli ifayibha optical, Ethernet imodyuli ifayibha optical, njl., inokubonelela ngenkonzo ehambelanayo esemgangathweni kwiimfuno zabasebenzisi ezahlukeneyo ' , wamkele utyelelo lwakho.
