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The errors induced by channel noise influence on the quality of digital transmission. The latter depends on the probability of errors in the transmitted symbols. To control these errors, a technique of digital signal processing is used, including the information code to be transmitted. As these techniques are used for controlling the transmssion, they are called "channel encoding". In this paper, we introduced and studied two major correction code families' error; LDPC (Low Density Paritydoi:10.22201/icat.16656423.2019.17.2.802 fatcat:3bsdvstzqzdhfnvj6u67sujqwu