3. Nyob rau hauv hom multiplexing lub sij hawm slots yog preassigned rau qhov chaw thiab tsau. Piav: TDM yog sijhawm faib multiplexing.
Nyob rau hauv qhov TDM qhov twg nkim yog tias tsis muaj ntaub ntawv xa mus?
2. Asynchronous lub sij hawm faib multiplexing. Hauv synchronous TDM yog tias lub davhlau ya nyob twg tshwj xeeb tsis muaj cov ntaub ntawv xa mus rau lub sijhawm tshwj xeeb, qhov sib txuas hauv ib lub thav duab yog nkim lossis qhov khoob khoob yuav raug xa mus. Asynchronous TDM lossis statistical TDM yog siv los kov yeej qhov nyuaj no.
Vim li cas synchronous TDM tsis ua haujlwm?
Qhov tsis zoo tshaj plaws ntawm synchronous lub sij hawm faib multiplexing yog tias lub peev xwm tag nrho ntawm qhov txuas yuav tsis siv. Yog tias lub cuab yeej txuas nrog tsis xa cov ntaub ntawv, nws lub sijhawm teem sijhawm yuav khoob thiab ib feem ntawm kev sib txuas bandwidth yuav raug nkim.
Dab tsi yog interleaving hauv TDM?
Ntawm multiplexing sab, raws li qhov hloov pauv qhib rau pem hauv ntej ntawm kev sib txuas, qhov kev sib txuas muaj lub sijhawm xa ib chav mus rau txoj kev. Txoj kev no hu ua interleaving. Nyob rau sab demultiplexing, raws li qhov hloov pauv qhib rau pem hauv ntej ntawm kev sib txuas, qhov kev sib txuas ntawd muaj lub sijhawm kom tau txais ib chav los ntawm txoj kev.
Yuav ua li cas muaj ntau hom kev sib tw ua ke?
Muaj ntau ob hom ntawm multiplexers, namely analog thiab digital. Lawv ntxivmuab faib ua Frequency Division Multiplexing (FDM), Wavelength Division Multiplexing (WDM), thiab Time Division Multiplexing (TDM).
