Optimizing the Error Recovery Capabilities of LDPC-Staircase Codes Featuring a Gaussian Elimination Decoding Scheme: Preliminary Results

Mathieu Cunche (1) , Vincent Roca (1)

1 PLANETE - Protocols and applications for the Internet

The erasure recovery capabilities of LDPC-Triangle and LDPC-Staircase codes can be greatly improved by means of a Gaussian elimination decoding scheme . Thanks to this decoding, the LDPC-Triangle codes are now very close to an ideal code. The LDPC-Staircase codes are also improved but they are not as close to an ideal code as the LDPC-Triangle codes are. Furthermore, for some code rates, the performances of the LDPC-Staircase codes diverge from their asymptotic behavior. This document studies the influence of the N1 parameter of the LDPC-Staircase codes, i.e., the target number of '1s' per column, which in turn controls the left degree of source symbols, on the erasure recovery capabilities of the codes when a Gaussian elimination decoding scheme is used.

Mots clés: FEC codes for the packet erasure channel; AL-FEC codes; LDPC codes; LDPC-staircase codes; Gaussian elimination

Domaines: Théorie de l'information [cs.IT]; Théorie de l'information et codage [math.IT]

Mathieu Cunche, Vincent Roca. Optimizing the Error Recovery Capabilities of LDPC-Staircase Codes Featuring a Gaussian Elimination Decoding Scheme: Preliminary Results. 2008. ⟨inria-00271430⟩