Xa iumthamo wothumeloIjelo lomzimba liphezulu kunemfuno yomqondiso omnye, umjelo unokwabelwana ngemiqondiso emininzi.Umzekelo, umboko wenkqubo yemfonomfono ngokuqhelekileyo unamawakawaka emiqondiso ethunyelwa kwioptical fiber enye.I-Multiplexing iteknoloji exazulula indlela yokusebenzisa itshaneli ukuhambisa iimpawu ezininzi ngexesha elinye.Injongo kukusebenzisa ngokupheleleyo i-frequency band okanye izixhobo zexesha lomjelo kunye nokuphucula izinga lokusetyenziswa kweshaneli.
Naziiindlela ezimbini eziqhelekileyo zokuphindaphinda umqondiso: i-frequency division multiplexing (FDM) kunye ne-time division multiplexing (TDM) Ixesha lokwahlulahlula i-multiplexing ngokuqhelekileyo isetyenziselwa ukuphindaphinda kweempawu zedijithali.Ulwahlulo oluphindaphindayo luphinda-phinda lusetyenziselwa ukuphinda-phindwa kwemiqondiso ye-analogue kodwa lunokusetyenziselwa imiqondiso yedijithali.Eli candelo liza kuxoxa ngomgaqo kunye nokusetyenziswa kwe-FDM.
Ukwahlula-hlula rhoqoyindlela yokuphindaphinda eyahlula amajelo ngokobuninzi.Kwi-FDM, i-bandwidth yetshaneli yahlulahlulwe ibe yininzi yeebhendi zefrikhwensi (i-sub-channel) engahambelaniyo.Itshaneli nganye yeempawu ithatha enye yeetshaneli ezingaphantsi, kwaye iibhendi zefrikhwensi ezingasetyenziswanga (iibhendi zonogada) kufuneka zigcinwe phakathi kwamajelo okuthintela ukugqithelana komqondiso.Kwisiphelo sokufumana, isihluzo esifanelekileyo se-band-pass sahlula imiqondiso emininzi kwaye sifumana kwakhona imiqondiso efunekayo.
Lo mfanekiso ulandelayo ubonisaumzobo webhloko yomgaqo wenkqubo yolwahlulo lokuphindaphinda.Kwisiphelo sothumelo, isiginali yelizwi nganye ye-baseband idlula kuqala kwisihluzi esisezantsi (i-LPF) ukukhawulela elona xesha liphezulu lophawu ngalunye.Emva koko, itshaneli nganye yemiqondiso imodareyithwa kwii-frequencies ze-carrier carriers, ukwenzela ukuba itshaneli nganye yeempawu zihanjiswe kuluhlu lwazo lwamaza, kwaye emva koko zidityaniswe kwaye zithunyelwe kwitshaneli ukuze zihanjiswe.Uluhlu lwezihlungi ze-band-pass kunye ne-frequencies yamaziko ahlukeneyo ekupheleni kokufumana isetyenziselwa ukwahlula iimpawu ezimodareyithiweyo.Emva kokuba zithotyiwe, imiqondiso ye-baseband ehambelanayo yetshaneli nganye iyafunyanwa.
Ukuze kuthintelweukuphazamisanaphakathi kwemiqondiso emeleneyo, i-frequency carrier F kufuneka ikhethwe ngokufanelekileyo_ c1,f_ c2,···,f_ Cn ukwenzela ukuba ibhanti yomlindi ethile igcinwe phakathi kweespectrum zesignali ezimodareyithiweyo.
Yile ntoShenzhen HDV phoelelectron Technology Co., Ltd.izise kuwe malunga nolwazi lwe-frequency division multiplexing.Ndiyathemba ukuba eli nqaku linokukunceda ukwandisa ulwazi lwakho.Ngaphandle kweli nqaku ukuba ujonge inkampani elungileyo yomenzi wezixhobo zonxibelelwano lwefiber onokuthi uyithathele ingqalelongathi.
I-Shenzhen HDV photoelectric Technology Co., Ltd. ikakhulu ngumvelisi weemveliso zonxibelelwano.Okwangoku, izixhobo eziveliswayo zigubungela iONU series, uthotho lwemodyuli yokubona, OLT series, kwayetransceiver series.Sinokubonelela ngeenkonzo ezilungiselelwe iimeko ezahlukeneyo.Wamkelekile ukubabonisana.
