Qhov sib txawv tseem ceeb ntawm Baseband thiab Broadband Transmission yog tias hauv kev sib kis hauv baseband, ib lub teeb liab siv tag nrho cov bandwidth ntawm cov channel xa cov ntaub ntawv thaum nyob rau hauv broadband kis tau tus mob, ntau lub teeb liab nrog ntau zaus xa cov ntaub ntawv los ntawm ib tug channel ib txhij.
Muaj ob hom kev sib kis hu ua baseband thiab broadband. Baseband kis tau tus mob tsuas yog xa ib lub teeb liab ntawm ib lub sij hawm, thiab nws siv cov teeb liab digital whereas Broadband kis tau tus mob xa ntau lub teeb liab ntawm ib lub sij hawm thiab nws siv analog signals.
Kev kis kab mob Baseband yog dab tsi?
Baseband kis tau tus mob siv cov teeb liab digital xa cov ntaub ntawv los ntawm kev tshaj tawm raws li ib qho channel. Hauv cov txheej txheem no, ib lub teeb liab siv tag nrho cov bandwidth ntawm lub network xov xwm rau kev sib kis. Tsis tas li ntawd, cov cuab yeej xa thiab tau txais cov ntaub ntawv siv ib qho channel lossis cable. Kev xa thiab txais tsis tuaj yeem tshwm sim ntawm tib lub channel tib lub sijhawm. Yog li ntawd, baseband kis tau tus mob yog bidirectional.
Daim duab 01: Cov ntaub ntawv xa mus
Baseband kis tau tus mob siv sij hawm Division Multiplexing (TDM). TDM tsis siv channel faib; Hloov chaw, txhua lub teeb liab tau txais lub sijhawm. Yog li ntawd, ib lub teeb liab siv tag nrho cov bandwidth rau ib lub sijhawm muab. Feem ntau, baseband kis tau tus mob pab xa cov teeb liab mus rau luv luv. Li no, Ethernet feem ntau siv cov txheej txheem kev sib kis no.
Kev sib kis Broadband yog dab tsi?
Broadband Transmission xa cov ntaub ntawv raws li cov teeb liab analog. Nyob rau hauv kev sib txuas lus broadband, nws muaj peev xwm xa cov teeb liab ib txhij ntawm ntau qhov sib txawv. Qhov kev sib kis no yog unidirectional. Hauv lwm lo lus, kev xa cov ntaub ntawv tsuas yog tshwm sim rau ib qho kev taw qhia ntawm ib lub sijhawm. Yog li ntawd, nyob rau hauv broadband kis tau tus mob, nws tsuas xa los yog tau txais tab sis tsis tuaj yeem ua ob qho tib si ib txhij.
Broadband kis tau tus mob siv Frequency Division Multiplexing (FDM). Hauv FDM, tag nrho cov bandwidth tau muab faib ua ntau zaus bands, thiab txhua tus muaj cov teeb liab cais. Thaum kawg tau txais, ib qho multiplexer faib cov cim ntau yam. Feem ntau, cable TV, Asynchronous Transfer Mode (ATM), variants ntawm Digital Subscriber Line (DSL), Fais fab Line kev sib txuas lus siv broadband kis.
Qhov txawv ntawm Baseband thiab Broadband Transmission yog dab tsi?
Baseband vs Broadband Transmission |
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| Baseband Transmission yog cov txheej txheem sib kis uas ib lub teeb liab yuav tsum muaj tag nrho bandwidth ntawm channel xa cov ntaub ntawv. | Broadband Transmission yog cov txheej txheem sib kis uas muaj ntau lub teeb liab nrog ntau zaus xa cov ntaub ntawv los ntawm ib qho channel ib txhij. |
| Type of Signals | |
| Siv cov cim digital | Siv analog signals |
| Ntau Cov Teebmeem | |
| Xa ib lub teeb liab ntawm ib zaug | Xa ntau lub cim ib txhij |
| Teeb liab Range | |
| Sim qhia taug kev luv luv | Signals taug kev deb yam tsis muaj kev cuam tshuam ntau |
| Kev kis tus kab mob | |
| Bidirectional | Unidirectional |
| Multiplexing | |
| Siv Sijhawm Division Multiplexing | Siv Zaus Division Multiplexing |
| Examples | |
| Ethernet yog ib qho piv txwv | Cable TV, Wi-Fi, thiab Kev Sib Txuas Hluav Taws Xob yog qee qhov piv txwv |
Summary – Baseband vs Broadband Transmission
Qhov txawv ntawm Baseband thiab Broadband Transmission yog tias hauv kev sib kis hauv baseband, ib lub teeb liab yuav siv tag nrho cov bandwidth ntawm cov channel xa cov ntaub ntawv thaum nyob rau hauv broadband kis, ntau lub teeb liab nrog ntau zaus xa cov ntaub ntawv los ntawm ib lub channel ib txhij.
