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    Ulwahlulo lokuphindaphinda ngokuphindaphindiweyo

    Ixesha lokuposa: Aug-12-2022

    Xa iumthamo wothumeloIjelo lomzimba liphezulu kunemfuno yomqondiso omnye, umjelo unokwabelwana ngemiqondiso emininzi.Umzekelo, umboko wenkqubo yemfonomfono ngokuqhelekileyo unamawakawaka emiqondiso ethunyelwa kwi<em>optical 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.

    Ulwahlulo oluphindaphindayo lwe-Multiplexingyindlela 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.

    Ukwahlula okuphindaphindayo

     

     

     



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