Video: Muaj pes tsawg tus cab kuj siv nyob rau hauv BFSK?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Muaj pes tsawg tus cab kuj siv nyob rau hauv BFSK ? Kev daws: 27. Nyob rau hauv _ kis tau tus mob, theem ntawm lub tus cab kuj teeb liab yog modulated ua raws li qhov hloov voltage theem (amplitude) ntawm modulating teeb liab.
Kuj nug, yog FSK thiab BFSK tib yam?
Zaus-hloov keying ( FSK ) yog ib qho kev hloov pauv zaus uas cov ntaub ntawv digital kis tau los ntawm kev hloov pauv zaus ntawm cov teeb liab nqa khoom. BFSK siv ib khub ntawm discrete frequencies xa binary (0s thiab 1s) cov ntaub ntawv.
FSK bandwidth xam li cas? Ib daim duab plaub-pulse polar baseband teeb liab yog siv los hloov kho tus neeg nqa khoom RF hauv FSK . Yog tias lub teeb liab baseband muaj cov ntaub ntawv tus nqi ntawm 200 kbit / sec thiab ob lub RF zaus yog 150 kHz sib nrug, txiav txim tus bandwidth . 2f + 2B = 150 kHz + 200 kHz = 350 kHz.
Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog bandwidth yuav tsum tau nug?
Ib NUG teeb liab xav tau a bandwidth sib npaug rau nws tus nqi baud. Yog li ntawd, lub bandwidth yog 2000 Hz.
FSK siv rau dab tsi?
Binary FSK (feem ntau hu ua yooj yim li FSK ) yog ib qho kev hloov pauv feem ntau siv rau xa cov ntaub ntawv digital ntawm cov khoom siv digital xws li teleprinters thiab computers. Cov ntaub ntawv raug xa mus los ntawm kev hloov qhov zaus ntawm tus neeg nqa khoom txuas ntxiv mus rau ib qho los yog lwm qhov ntawm ob qhov sib txawv.
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