Abstract
This paper introduces several new combinatorial constructions of low-density parity-check (LDPC) codes, in contrast to the prevalent practice of using long, random-like codes. The proposed codes are well structured, and unlike random codes can lend themselves to a very low-complexity implementation. Constructions of regular Gallager codes based on cyclic difference families, cycle-invariant difference sets, and affine 1-configurations are introduced. Several constructions of difference families used for code design are presented, as well as bounds on the minimal distance of the codes based on the concept of a generalized Pasch configuration.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1156-1176 |
| Number of pages | 21 |
| Journal | IEEE Transactions on Information Theory |
| Volume | 50 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2004 |
Keywords
- Cyclic difference families
- Iterative decoding
- Low-density parity-check (LDPC) codes
- Pasch configurations
ASJC Scopus subject areas
- Information Systems
- Computer Science Applications
- Library and Information Sciences
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