Design of systematic GIRA Codes for CPM

Tarik Benaddi (1, 2, 3) , Charly Poulliat (2, 3, 4) , Marie-Laure Boucheret (2, 3, 4) , Benjamin Gadat (5) , Guy Lesthievent (1)

1 CNES - Centre National d'Études Spatiales [Toulouse]
2 IRIT-SC - Signal et Communications
3 TéSA - Télécommunications Spatiales et Aéronautiques - Telecommunications for Space ant Aeronautics
4 Toulouse INP - Institut National Polytechnique (Toulouse)
5 THALES [France]

In this paper, we derive an asymptotic analysis for the design of serially concatenated turbo schemes that works for both systematic generalized irregular repeat accumulate (GIRA) and low density generator matrix (LDGM) codes concatenated with a continuous phase modulation (CPM). The proposed design is based on a semi-analytic EXIT chart optimization method. By considering a particular scheduling, inserting partial interleavers between GIRA accumulator and CPM and allowing degree-1 variable nodes, we show that one can achieve very good thresholds.

Mots clés: Continuous phase modulation; Low density generator matrix; Generalized irregular repeat accumulate; Asymptotic analysis

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]; Traitement du signal et de l'image [eess.SP]; Traitement des images [eess.IV]; Vision par ordinateur et reconnaissance de formes [cs.CV]; Intelligence artificielle [cs.AI]

Tarik Benaddi, Charly Poulliat, Marie-Laure Boucheret, Benjamin Gadat, Guy Lesthievent. Design of systematic GIRA Codes for CPM. 8th International Symposium on Turbo Codes and Iterative Information Processing - ISTC 2014, Aug 2014, Bremen, Germany. pp. 7-11. ⟨hal-01147234⟩