This paper provides a comprehensive analysis of nonbinary low-density parity check
(LDPC) codes built out of protographs. We consider both random and constrained edge …

In this paper, we compare the finite-length performance of protograph-based spatially
coupled low-density paritycheck (SC-LDPC) codes and LDPC block codes (LDPC-BCs) …

This paper presents two simple and very flexible methods for constructing non-binary (NB)
quasi-cyclic (QC) LDPC codes. The proposed construction methods have several known …

Dimming control is desirable for visible light communication (VLC) systems to provide
different levels of brightness. In this letter, we propose a new coding scheme for dimmable …

A novel scheme is presented for encoding and iterative soft-decision decoding of cyclic
codes of prime lengths. The encoding of a cyclic code of a prime length is performed on a …

This paper proposes a novel encoder architecture of low-density parity-check (LDPC)
generator matrix in frequency modulation-China digital radio (CDR), which was promulgated …

In the check node (CN) update of non-binary message-passing algorithms, each element of
reliability vectors takes the same computational complexity. However, our analysis indicates …

This letter is concerned with low-complexity decoding algorithms for nonbinary low-density
parity-check (NB-LDPC) codes. A new truncation rule based on an adaptive threshold μ is …

In this letter, we consider the construction of q-ary low-density parity-check (LDPC) codes by
jointly optimizing the girth and number of shortest cycles in the frame of superposition. We …

Toward next-generation multiple access, we propose a multiuser transmission framework
via non-binary factor graphs defined over Galois field GF (q). The non-orthogonal multiuser …