Dab tsi yog qhov kev sib kis tsis zoo?
Dab tsi yog qhov kev sib kis tsis zoo?

Video: Dab tsi yog qhov kev sib kis tsis zoo?

Video: Dab tsi yog qhov kev sib kis tsis zoo?
Video: zoo lawm qhov kj tsis yuav kv (ci ntsa iab )nkauj tawm tshiab 2024, Kaum ib hlis
Anonim

Kev cuam tshuam tsis zoo . Lub teeb liab tau txais yuav txawv ntawm lub teeb liab kis. Cov nyhuv yuav degrade lub teeb liab zoo rau analog signals thiab qhia me ntsis yuam kev rau digital signals. Muaj peb hom kis tsis taus : attenuation, ncua distortion, thiab suab nrov.

Yog li ntawd, dab tsi yog qhov kev tsis sib haum xeeb piav qhia nrog daim duab?

Kev tsis sib haum xeeb hauv Data Communication. Nyob rau hauv kev sib txuas lus system, analog signals mus los ntawm kis tau tus mob media, uas zoo li deteriorate qhov zoo ntawm analog teeb liab. Qhov kev tsis zoo no ua rau muaj teeb meem kev puas tsuaj . Nws ntsuas qhov txheeb ze zog ntawm ob lub teeb liab lossis ib lub teeb liab ntawm ob qhov sib txawv.

Tom qab ntawd, lo lus nug yog, yuav ua li cas kis tau tus mob rau lub LAN? Common wireless LAN kis tau tus mob impairments suav nrog txoj kev poob, ntau txoj kev sib txawv, thiab RF cuam tshuam. Txoj kev poob, uas yog qhov attenuation uas lub teeb liab dhau mus vim qhov kev nthuav tawm deb ntawm lub xov tooj cua thiab qhov chaw nkag, yog tam sim no nyob rau hauv tag nrho cov wireless LAN kev sib kis.

Ib yam li ntawd ib tug yuav nug, Dab tsi yog Kev Tsis Txaus Siab Kev Sib Txuas Lus Nws yog vim li cas?

Peb qhov txawv ua rau ntawm kev puas tsuaj yog attenuation, distortion, thiab suab nrov. Attenuation: Attenuation txhais tau tias tsis muaj zog. Thaum lub teeb liab, yooj yim los yog sib xyaw, taug kev los ntawm qhov nruab nrab, nws poob qee qhov nws lub zog nyob rau hauv kov yeej qhov tsis kam ntawm nruab nrab.

Transmission attenuation yog dab tsi?

Attenuation yog ib lo lus dav dav uas hais txog kev txo qis ntawm lub zog ntawm lub teeb liab. Attenuation tshwm sim nrog txhua hom teeb liab, txawm tias digital lossis analog. Qee lub sij hawm hu ua poob, attenuation yog qhov tshwm sim ntawm lub teeb liab kis tau tus mob hla kev deb.

Pom zoo: