LDPC codes code construction and encoder hardware implementation
Sta psephiaka sustemata, e plerophoria kodikopoieitai se akolouthies apo 0kai 1, pou antistoikhoun stis duo dunates katastaseis ton tranzistor, on off, ta opoia leitourgoun os diakoptes. To pleonektema auto ekhei epipherei semantikesallages ston tropo epexergasias tes plerophorias. E plerophoria ste phuse parousiazetai apokleiatika se analogike morphe, kathos o anthropos mono analogikasemata mporei na antilephthei. 'Etsi loipon, ta analogika dedomena prepei na pse phiopoiethoun, na metatrapoun delade se akolouthies apo 0 kai 1, oste o dektes namen einai upokhreomenos na kanei mia ektimese ton apeiron timon enos analogikousematos, alla apla na parei mia apophase metaxu ton duo diakriton timon giakathe sema, 0 e 1. E diadikasia aute kathista ta psephiaka semata pio axiopistagia te metadose plerophorias se ena enthorubo periballon, kathos mporoun na ani khneuontai skhedon teleia, otan to epipedo tou thorubou den einai idiaitera upselo,pragma pou epitrepei ten anaktese ton psephiakon stoikheion, kai meso ton tekhni kon diorthoses lathon einai dunate e diorthose sphalmaton pou sumbainoun kata temetadose.E diatribe epikentronetai sten kataskeue apodotikon kodikon LDPC kai ste melete tes kodikopoieses gia kodikes LDPC. Sugkekrimena, sten parousa diatribeakoloutheitai mia skhediastike methodologia basismene sten apo koinou kataskeuekai ulopoiese se uliko ton kodikon LDPC kai ton kodikopoieton, antistoikha.Stokhos einai na anaptukhthoun methodologies kataskeues kodikon LDPC me megaleikanoteta diorthoses lathon, idiaitera se khamelo BER oi opoioi ikanopoioun prodiagraphes sugkekrimenon epharmogon, alla kai na einai katalleloi gia khrese kai se alles epharmoges me paromoies apaiteseis se diorthotike ikanoteta. Tautokhronos, ulopoiountai se uliko diaphores arkhitektonikes kodikopoieton, oi opoies epises ikanopoioun ena arketa megalo euros apo prodiagraphes arkhitektonikon, opos upselo ruthmo epexergasias kai metadoses dedomenon (Throughput rate) tes taxeos ton pollon Gbps, khamele khronike poluplokoteta me mikre epiphaneia ton kuklomaton VLSI, khrese mikron mnemon kai khamele katanalose iskhuos, alla kai uposterixe kodikopoieses kodikon me pollaplous ruthmous khresimopoiontas eite ena mono kodika apo ton opoio paragontai kai alloi kodikes me diaphoretikous ruthmous, eite khresimopoiontas pollous kodikes, o kathenas apo tous opoiousuposterizei ena sugkekrimeno ruthmo. Sta plaisia tes diatribes, meletountai ta problemata kai e poluplokoteta kodikopoieses kodikon LDPC mazi me ten diorthotike ikanoteta tous. 'Emphase dinetai ste kataskeue kai ulopoiese ton kodikon pou anekoun ste kategoriaton QC LDPC.