In b3g - system , the ldpc code has been used with the random irregular parity - check matrix , which the data length is 3944 “ b3g ”系統(tǒng)中, ldpc碼校驗矩陣為隨機(jī)的非規(guī)則校驗矩陣,碼長為3944比特。
This article uses the parity check matrix to produce a simplified decoding table under the premise of not using the structure standard array 摘要在不用構(gòu)造標(biāo)準(zhǔn)陣列的前提下,利用一致校驗矩陣直接生成簡化的譯碼表。
( 2 ) introduce the graph theory of ldpc codes ; analyse the impact of cycle ; and research how to construct the parity check matrix ( 2 )介紹了ldpc碼圖模型理論;分析環(huán)對ldpc碼性能的影響;并討論了如何構(gòu)造ldpc碼校驗矩陣。
By column exchanging , the ( m , n ) parity check matrix is divided into k ( m , ni " ) sub - matrixes which obey the same rules 該方法對m行n列的校驗矩陣進(jìn)行列交換處理,使得校驗矩陣形成k個m行ni '列的子矩陣,每個子矩陣具有一定的規(guī)律。