Flat Fading: Nyob rau hauv tiaj tus fading, tag nrho cov zaus feem cuam tshuam yuav luag sib npaug. Flat multipath fading ua rau lub amplitude hloov mus rau lub sijhawm. Selective Fading: Selective Fading lossis Selective Frequency Fading yog hais txog ntau txoj kev fading thaum xaiv qhov zaus ntawm lub teeb liab cuam tshuam.
Dab tsi yog hom kev fading?
Piv txwv ntawm fading qauv rau kev faib tawm ntawm qhov attenuation yog:
- Dispersive fading qauv, nrog ntau lub suab nrov, txhua qhov cuam tshuam rau qhov sib txawv qeeb, nce thiab theem hloov, feem ntau tas li. …
- Nkagami fading.
- Log-zoo li qub duab ntxoov ntxoo fading.
- Rayleigh fading.
- Rician fading.
- Ob-wave with diffuse power (TWDP) fading.
- Weibull fading.
Dab tsi yog fading Dab tsi yog hom fading?
Cov Fading hom tau muab faib ua loj fading thiab me me fading (multipath qeeb kis thiab doppler kis). Flat fading thiab zaus xaiv fading yog ib feem ntawm multipath fading qhov twg sai fading thiab qeeb fading yog ib feem ntawm doppler kis fading.
Zoo piav qhia yog dab tsi?
Fading tshwm sim thaum muaj qhov hloov pauv tseem ceeb hauv cov teeb liab tau txais amplitude thiab theem dhau sijhawm lossis qhov chaw. Fading tuaj yeem yog zaus xaiv-uas yog, qhov sib txawv ntawm cov khoom sib txawv ntawm ib qho kev sib kis ntawm cov teeb liab tuaj yeem ua rau ntau qhov sib txawv.fading.
Dab tsi yog fading thiab nws ua li cas?
Dab tsi ua rau ploj mus. Kev ploj tuag tuaj yeem tshwm sim vim huab cua cuam tshuam, xws li nag, daus, pos huab, lawg thiab huab cua txias heev dhau lub ntiaj teb sov. Fading tuaj yeem tsim los ntawm tib neeg ua rau muaj kev cuam tshuam, xws li dej, lossis los ntawm ntau txoj kev sib kis, qhov chaw hauv ntiaj teb tsis sib xws, thiab ntau qhov chaw.
