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Lub PON system txais kev siv lub sij hawm faib multiplexing technology nyob rau hauv uplink kev taw qhia, thiab ONU xa datagrams mus rau uplink kev taw qhia raws li lub sij hawm stamp faib los ntawm lub OLT. Thaum ONU tso tawm lub teeb yam tsis tau muab lub sijhawm thwj, nws yuav cuam tshuam nrog cov teeb liab tawm ntawm lwm yam ntawm ...

Nrog rau kev txhim kho ntawm kev sib txuas lus kho qhov muag nrog kev ncua deb, muaj peev xwm loj dua, thiab kev nrawm dua, tshwj xeeb tshaj yog thaum cov nthwv dej ib leeg hloov zuj zus los ntawm 40g mus rau 100g lossis txawm tias super 100g, chromatic dispersion, nonlinear cuam tshuam, polarization hom dispersion, thiab lwm yam kev sib kis hauv. ..

Kev kuaj xyuas yuam kev (parity check code): parity check code muaj n-1 ntsis ntaub ntawv chav tsev thiab 1 ntsis kos lub caij. N-1 ntsis ntaub ntawv chav tsev yog cov ntaub ntawv siv tau nyob rau hauv cov ntaub ntawv peb xa, thiab 1-ntsis check unit yog siv rau kev ua yuam kev thiab redundancy code. Odd check: yog tias n...

Nyob zoo, nyeem. Hauv tsab xov xwm no kuv yuav tham txog OSI-Data Link Layer Error Control nrog kev piav qhia. Cia peb pib… Rau kev nkag siab txog kev sib kis ntawm cov ntaub ntawv txuas txheej cia peb ua piv txwv, yog tias A ntaus ntawv xav tau kev sib txuas lus nrog B ntaus ntawv, kev sib txuas lus txuas ...

Nyob zoo Cov neeg nyeem, Hauv tsab xov xwm no peb yuav kawm dab tsi yog Kev Tswj Xyuas Kev Ua Haujlwm thiab kev faib ua yuam kev. Nyob rau hauv tus txheej txheem ntawm cov ntaub ntawv kis tau tus mob, vim lub cuam tshuam ntawm lub suab nrov ntawm lub channel, lub teeb liab waveform tej zaum yuav distorted thaum nws kis mus rau lub receiver, re ...

Nyob rau hauv lub sij hawm digital division multiplexing kev sib txuas lus system, txhawm rau txhawm rau cais cov cim lub sijhawm, qhov kawg xa yuav tsum muab cov cim pib ntawm txhua tus ncej, thiab cov txheej txheem ntawm kev ntes thiab tau txais cov cim no ntawm qhov kawg tau txais yog hu ua ncej synchr. .