2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
txhawm rau txheeb xyuas thiab kho qhov yuam kev, cov khoom ntxiv tau ntxiv rau cov ntaub ntawv khoom thaum lub sijhawm xa mus. Cov khoom ntxiv yog hu ua parity bits. Lawv tso cai rau kev tshawb nrhiav lossis kho qhov yuam kev. Cov ntaub ntawv me me nrog rau cov parity khoom tsim ib lo lus code.
Yuav ua li cas kho tau?
Yam kho qhov yuam kev
- Tsis siv neeg rov thov (ARQ)
- Forward error kho.
- Hybrid schemes.
- yam tsawg kawg nkaus coding.
- Repetition codes.
- Parity me ntsis.
- Checksum.
- Cyclic redundancy check.
Yuav ua li cas muaj pes tsawg tus yuam kev txawm tias parity scheme ntes thiab kho?
2-dimensional parity scheme tuaj yeem ntes tag nrho 2 me ntsis yuam kev… tab sis nws tsis tuaj yeem kho qhov yuam kev. Qhov yuam kev tuaj yeem tshawb pom. Tus neeg txais tsis tuaj yeem qhia qhov twg ntawm 2 kis no tau tshwm sim….
Yuav ua li cas yuam kev los ntawm parity check code?
Qhov kev txheeb xyuas qhov sib luag yog tsim rau kev kuaj pom qhov yuam kev me ntsisnkaus xwb. Txawm Parity - Ntawm no tag nrho cov khoom hauv cov lus tau ua txawm tias. Odd Parity - Ntawm no tag nrho cov khoom hauv cov lus tau ua khib.
Muaj pes tsawg qhov yuam kev tuaj yeem pom qhov sib txawv me ntsis?
Peb tuaj yeem ntes ib qho yuam kev nrog qhov sib luag me ntsis. Lub parity me ntsis yog xam raws li qhov tshwj xeeb-OR (txawm tias parity) los yog tshwj xeeb-NOR (khib parity) ntawm tag nrho lwm cov khoom hauv lo lus. Yog li ntawd, cov lus uas tshwm sim nrog ib tug parity me ntsis yuavib txwm muaj ib qho txawm (rau qhov sib npaug) lossis khib (rau qhov sib txawv txawv) tus lej ntawm 1 cov khoom hauv nws.
Pom zoo:
Puas yog kev ntseeg yuam kev thiab txhais lus yuam kev?
Raws li nouns qhov txawv ntawm misconception thiab misinterpretation. yog hais tias misconception yog ib tug mistaken kev ntseeg, ib lub tswv yim yuam kev thaum txhais mis yog ib qho piv txwv ntawm misinterpreting. Dab tsi yog qhov zoo tshaj plaws txhais ntawm kev tsis ncaj ncees?
Ntawm kev kho qhov yuam kev tom ntej?
Forward kev kho qhov yuam kev ua haujlwm los ntawm kev ntxiv cov khoom siv rov ua dua mus rau ib qho me ntsis txhawm rau pab tus txiav txim siab pom thiab kho qee qhov kev xa mus tsis raug yam tsis tas yuav rov xa rov qab. Lub npe rau pem hauv ntej stems los ntawm qhov tseeb hais tias qhov ntws ntawm cov ntaub ntawv yog ib txwm nyob rau hauv cov kev taw qhia pem hauv ntej (piv txwv li, los ntawm encoder mus decoder).
Qhov twg yog qhov kev txiav txim siab rau kev tsis lees paub thiab rau kev ua kom muaj kev tawm tsam ntawm kev tawm tsam?
Kev qhuab ntuas tau siv los ntawm cov thawj coj loj hauv cov tub rog Romanrau txim rau cov koom haum lossis pab pawg loj ua txhaum cai, xws li kev ua phem, kev tawm tsam, kev tawm tsam, thiab kev tsis ncaj ncees, thiab rau lub pacification ntawm rebellious legions.
Thaum qhov kev ncua deb me me qhov twg ntawm qhov yuam kev hauv qab no tsis tsim nyog?
Thaum qhov kev ncua deb me me qhov twg ntawm qhov yuam kev hauv qab no tsis tsim nyog? Nqe lus piav qhia: Cov txiaj ntsig ntawm curvature yog txhawm rau nyeem cov pas nrig. Thaum qhov deb me me qhov yuam kev yog negligible. Qhov twg ntawm qhov yuam kev hauv qab no los ntawm tus kheej yuam kev?
Puas ob qhov yuam kev suav tias yog qhov yuam kev tsis raug?
Ib qho yuam kev uas tshwm sim los ntawm "kev quab yuam" lossis "kev tua nruj" yuav raug yuam. "Los ntawm txhais ob qhov ua txhaum yog qhov tsis raug yuam kev." Dab tsi suav tias yog qhov yuam kev tsis raug cai hauv kev ntaus pob tesniv?
