| 摘要 |
<p>A decoding method for low density generator matrix codes is disclosed, which decodes a bit information sequence that is transmitted after encoding with LDGC, the method comprises: S1: filling L-K known bits in a received code word sequence R and deleting code word symbols erased by a channel in R, and getting R e ;
S2: deleting rows corresponding to the code word symbols erased by a channel from a transposed matrix G Idgct of an LDGC generator matrix, and getting G e ;
S3: obtaining I t according to relation G e ×I t =R e ;
S4: obtaining s t according to relation G Idgct (0:L-1,0:L-1)×I t =s t , and getting an original information sequence of K bits by deleting the filled L-K known bits from s t . The present invention can significantly reduce the storage overhead of a decoder, accelerate the decoding speed, and allow LDGC to be more smartly used in high speed communication systems.</p> |
