Xa umthamo wokuhanjiswa kwejelo lomzimba liphezulu kunemfuno yomqondiso omnye, umjelo unokwabelwana ngeempawu ezininzi, umzekelo, umgca we-trunk wenkqubo yefowuni uhlala unamawaka emiqondiso ethunyelwa kwifiber enye. I-Multiplexing iteknoloji yokusombulula indlela yokusebenzisa itshaneli ukuhambisa iimpawu ezininzi ngexesha elinye. Injongo yalo kukusebenzisa ngokupheleleyo i-frequency band okanye izibonelelo zexesha lomjelo kunye nokuphucula izinga lokusetyenziswa kweshaneli.Kukho iindlela ezimbini eziqhelekileyo zokuphindaphinda isignali: i-Frequency division multiplexing (FDM) kunye ne-Time division multiplexing (TDM). Ixesha lokwahlula i-multiplexing ngokuqhelekileyo lisetyenziselwa ukuphindaphinda kweempawu zedijithali kwaye kuya kuxutyushwa kwiSahluko 10. Ukuphindaphinda kokwahlula ngokuphindaphindiweyo kusetyenziselwa ukuphindaphinda kweempawu ze-analog, kodwa kunokusetyenziselwa iimpawu zedijithali. Eli candelo liza kuxoxa ngemigaqo kunye nokusetyenziswa kwe-FDM.
Ukwahlula-hlula ngokuphindaphindiweyo yindlela yokuphinda-phinda eyahlulahlula amajelo ngokobuninzi. Kwi-FDM, i-bandwidth yeshaneli ihlukaniswe ngamaqela amaninzi angabonakaliyo (i-subchannels), kwaye isignali nganye ithatha enye ye-subchannels, kwaye kufuneka kubekho iibhendi ze-frequency ezingasetyenziswanga (iibhendi zokukhusela) phakathi kweziteshi zokuthintela ukugqithwa kwesignali. Ekupheleni kokufumana, isihluzo esifanelekileyo se-bandpass sisetyenziselwa ukwahlula iimpawu ezininzi, ukuze kubuyiselwe iimpawu ezifunekayo.
Lo mzobo ungezantsi ubonisa idayagram yebhloko yenkqubo yolwahlulo lokuphindaphinda. Kwisiphelo sothumelo, isiginali yelizwi nganye ye-baseband idlula kuqala kwi-low-pass filter (LPF) ukwenzela ukunciphisa ubuninzi bobuninzi besignali nganye. Emva koko, isiginali nganye imodareyithwa ukuya kwifrikhwensi eyahlukileyo yokuthwala, ukuze isiginali nganye ihanjiswe kuluhlu lwebhendi yayo, kwaye emva koko idityaniswe kwitshaneli yokuhanjiswa. Ekupheleni kokufumana, uluhlu lwezihlungi ze-band-pass kunye ne-frequency yamaziko ahlukeneyo asetyenziselwa ukwahlula iimpawu ezimodareyithiweyo, kwaye iimpawu ze-baseband ezihambelanayo zifunyanwa emva kokuba zihlanjululwe.
Ukuze kuthintelwe ukuphazamisana phakathi kweempawu ezimeleneyo, iifrikhwensi zomthwali f_c1,f_c2, f_cn kufuneka zikhethwe ngokufanelekileyo ukushiya ibhendi yokhuselo ethile phakathi kophawu ngalunye olumodareyithiweyo.
Oku kungasentla Shenzhen HDV Phoelectron Technology Ltd. ukukuzisela malunga "frequency division multiplexing" ingcaciso yolwazi, ithemba ukukunceda, kunye Shenzhen HDV Phoelectron 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.