Video: Hamming yuam kev kho code yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Hamming code yog ib txheej ntawm yuam kev - kho cov cai uas tuaj yeem siv los txheeb xyuas thiab yog lawm qhov yuam kev uas tuaj yeem tshwm sim thaum cov ntaub ntawv raug txav los yog khaws cia los ntawm tus xa mus rau tus txais.
Ib yam li ntawd, Hamming code siv li cas hauv kev kho qhov yuam kev?
Hamming code yog block code uas muaj peev xwm mus ntes tau mus txog ob simultaneous me ntsis yuam kev thiab kho ib-ntsis yuam kev. Nws tau tsim los ntawm RW. Cov khoom siv tsis tu ncua yog cov khoom ntxiv uas tau tsim thiab muab tso rau ntawm cov haujlwm tshwj xeeb hauv cov lus nws tus kheej kom pab tau kev tshawb nrhiav yuam kev thiab kho.
Kuj Paub, muaj pes tsawg qhov yuam kev tuaj yeem ntes Hamming code? Hamming codes tuaj yeem ntes tau mus txog rau ob-ntsis yuam kev los yog kho ib-ntsis yuam kev tsis muaj kuaj pom ntawm tsis raug yuam kev . Ntawm qhov sib txawv, qhov yooj yim parity code kho tsis tau yuam kev , thiab tuaj yeem ntes tau tsuas yog tus lej khib ntawm cov khoom hauv yuam kev.
Dhau li ntawd, Hamming code nrog piv txwv yog dab tsi?
Hamming code yog ib txheej ntawm kev ua yuam kev-kho code s uas tuaj yeem siv los txheeb xyuas thiab kho qhov yuam kev me me uas tuaj yeem tshwm sim thaum lub khoos phis tawj cov ntaub ntawv raug txav lossis khaws cia. Hamming code npe R. W. Hamming ntawm Bell Labs. Txhawm rau ua kom qhov no, lub chaw xa xov yuav tsum ntxiv cov ntaub ntawv ntxiv (hu ua yuam kev kho cov khoom) rau kev sib kis.
Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm Hamming code?
Qhov loj tshaj txiaj ntsig ntawm kev cai kod txoj kev ua tau zoo ntawm cov tes hauj lwm uas cov ntaub ntawv ntws tau muab rau qhov yuam kev ib-ntsis. Qhov loj tshaj qhov tsis zoo ntawm kev cai kod txoj kev yog tias nws tuaj yeem daws cov teeb meem nkaus xwb.
Pom zoo:
Dab tsi yog qhov sib txawv loj ntawm kev txheeb xyuas qhov yuam kev thiab kev kho cov lej yuam kev?
Ob qhov kev tshawb nrhiav qhov yuam kev thiab kev kho qhov yuam kev yuav tsum muaj qee qhov ntawm cov ntaub ntawv rov qab xa mus nrog cov ntaub ntawv tiag tiag; kev kho yuav tsum muaj ntau tshaj li kev tshawb nrhiav. Parity bits yog ib txoj hauv kev yooj yim rau kev tshawb nrhiav qhov yuam kev. Ib qho parity me ntsis yog ib qho ntxiv me ntsis xa nrog cov ntaub ntawv uas tsuas yog 1-ntsis suav ntawm cov ntaub ntawv
Vim li cas kev cob qhia yuam kev tsawg dua qhov kev xeem yuam kev?
Kev cob qhia yuam kev feem ntau yuav tsawg dua qhov kev xeem yuam kev vim tias tib cov ntaub ntawv siv los ua kom haum tus qauv yog ua haujlwm los ntsuas nws qhov kev kawm yuam kev. Ib feem ntawm qhov tsis sib xws ntawm qhov kev cob qhia yuam kev thiab qhov kev xeem yuam kev yog vim tias cov txheej txheem kev cob qhia thiab cov ntawv xeem muaj qhov sib txawv ntawm cov khoom siv
Dab tsi yog kev saib xyuas kev kho mob thiab kev kho kom zoo dua qub?
Kev piav qhia ntxaws ntxaws yog qhov txheej txheem nco uas suav nrog kev xav txog lub ntsiab lus ntawm lub ntsiab lus uas yuav tsum nco ntsoov, sib piv nrog cov txheej txheem ntawm kev rov hais dua cov lus rau tus kheej ntau dua. Kev saib xyuas kev kho mob yog cov txheej txheem ntawm kev rov xav txog lossis hais lus ib yam ntawm cov ntaub ntawv
Kev kho me ntsis yuam kev yog dab tsi?
Ib qho kev ua yuam kev ib zaug kho Hamming code tuaj yeem txuas ntxiv kom ntseeg tau tias ob npaug ntawm qhov yuam kev los ntawm kev ntxiv ib qho ntxiv me ntsis ntawm tag nrho cov lus encoded. Ib qho yuam kev ib-ntsis yog nyob deb ntawm ib lo lus siv tau, thiab kev kho algorithm hloov cov lus tau txais mus rau qhov ze tshaj plaws siv tau
Cov txheej txheem kho qhov yuam kev yog dab tsi?
Kev Kho yuam kev tuaj yeem ua tau ob txoj hauv kev: Rov qab kho qhov yuam kev: Thaum pom qhov yuam kev, tus txais yuav thov tus xa rov qab rau tag nrho cov ntaub ntawv. Kev kho qhov yuam kev rau pem hauv ntej: Hauv qhov no, tus txais yuav siv qhov yuam kev-kho code uas yuav kho qhov yuam kev