Modulation yog tus txheej txheem ntawm cuam tshuam cov ntaub ntawv xov xwm ntawm tus cab kuj, thaum demodulation yog rov qab los ntawm cov ntaub ntawv qub ntawm qhov kawg ntawm tus cab kuj. A modem yog ib qho khoom siv uas ua tau ob qho tib si modulation thiab demodulation.
Dab tsi yog qhov txawv ntawm kev hloov pauv thiab kev hloov pauv?
Qhov sib txawv tseem ceeb ntawm kev hloov pauv thiab kev hloov pauv yog qhov qauv ua tiav ntawm sab xa tawm thaum demodulation ua tiav ntawm tus txais kev sib txuas lus. … Modulation yog qhov pib ua kom xa cov ntaub ntawv mus ntev dua whereas demodulation yog ua kom rov tau txais cov lus qub qub.
modulation thiab demodulation yog dab tsi?
Modulation thiab demodulation
Modulation yog txheej txheem ntawm encoding cov ntaub ntawv hauv lub teeb liab kis tau tus mob, thaum demodulation yog txheej txheem ntawm rho tawm cov ntaub ntawv los ntawm cov teeb liab kis. Ntau yam cuam tshuam txog kev ntseeg siab npaum li cas cov ntaub ntawv rho tawm rov ua cov ntaub ntawv tawm tswv yim qub.
Puas yog qhov kev hloov pauv thiab cov khoom siv demodulation?
A modulator yog ib yam khoom lossis Circuit Court uas ua haujlwm. Ib tug demodulator (qee zaum detector) yog ib tug Circuit Court uas ua demodulation, tus inverse ntawm modulation. Lub modem (los ntawm modulator–demodulator), siv nyob rau hauv kev sib txuas lus bidirectional, tuaj yeem ua tau ob qho haujlwm.
Vim li cas yog kev hloov pauv thiab kev txiav txim?
Modulation yog txheej txheemntawm encoding cov ntaub ntawv nyob rau hauv ib tug kis tau tus mob, thaum demodulation yog txheej txheem ntawm extracting cov ntaub ntawv los ntawm lub teeb liab kis tau tus mob. Ntau yam cuam tshuam txog kev ntseeg siab npaum li cas cov ntaub ntawv rho tawm rov ua cov ntaub ntawv tawm tswv yim qub.
