Devices and methods for generating a low density parity check code for a incremental redundancy harq communication apparatus

Abstract

Devices and methods are disclosed for generating on the basis of a first protograph matrix Pof size m×n, wherein the first protograph matrix Pdefines a first code H, a second protograph matrix Pof size (m+d)×(n+d), wherein the second protograph matrix Pdefines a second code H. The device comprises a processor configured to: generate an auxiliary protograph matrix P' of size (m+d)×(n+d) on the basis of the first protograph matrix Pusing row splitting; generate drandom integer numbers, wherein d=d−d; generate a binary matrix M of size d×(n−m), wherein rows of the binary matrix M are generated on the basis of the drandom integer numbers; generate a matrix M′ by lifting the binary matrix M; Other operation steps are also included.