Video: Dab tsi yog lub ntsiab lus ntawm linear block code?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A linear thaiv code yog a thaiv code nyob rau hauv uas qhov tshwj xeeb-los yog ntawm ob lub codewords ua rau lwm codeword.
Hais txog qhov no, dab tsi yog linear block codes?
Hauv coding txoj kev xav, a linear code yog ib qho yuam kev-kho code rau qhov twg kab tawm ua ke ntawm codewords kuj yog codeword. Codewords nyob rau hauv a linear thaiv code yog thaiv ntawm cov cim uas tau encoded siv cov cim ntau dua li tus nqi qub yuav raug xa mus.
Ib yam li ntawd, koj ua pov thawj li cas linear code? A linear code feem ntau txhais tau tias yog subspace ntawm Fn rau qee qhov F (vim koj tab tom tham txog cov khoom, koj tuaj yeem nqa F = F2 = {0, 1}). Cov code C generated los ntawm ib tug generating matrix G yog ncua ntawm kab ntawm G. Qhov ncua sij hawm ntawm ib txheej vectors nyob rau hauv Fn yog ib tug subspace ntawm Fn, C yog ib tug linear code.
Hauv qhov no, dab tsi yog block code hauv kev sib txuas lus digital?
Qhov kev sim no soj ntsuam cov LOCK CODE ENCODER thiab LOCK CODE DECODER modules. Thaiv coding hais txog cov txheej txheem ntawm kev ntxiv cov khoom ntxiv rau a digital lo lus txhawm rau txhim kho kev ntseeg tau ntawm kev sib kis. Lo lus muaj cov lus me me (feem ntau hu ua cov ntaub ntawv, lossis cov ntaub ntawv) ntxiv rau code me ntsis.
Dab tsi yog cov khoom ntawm linear block code?
2. LINEAR BLOCK CODEIn ib (n, k) linear thaiv code : 1 feem ntawm k cov khoom yeej ib txwm zoo ib yam rau cov lus sib lawv liag kom xa mus. 2nd feem ntawm (n-k) cov khoom raug xam los ntawm cov lus me me raws li txoj cai encoding thiab hu ua parity bits.
Pom zoo:
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