Design of systematic GIRA codes for CPM

Author

Benaddi, Tarik ; Poulliat, Charly ; Boucheret, Marie-Laure ; Gadat, Benjamin ; Lesthievent, Guy

Author_Institution

CNES, Toulouse, France

fYear

2014

fDate

18-22 Aug. 2014

Firstpage

7

Lastpage

11

Abstract

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.

Keywords

concatenated codes; continuous phase modulation; optimisation; scheduling; turbo codes; CPM codes; LDGM codes; asymptotic analysis; concatenated turbo schemes; continuous phase modulation; generalized irregular repeat accumulate; low density generator matrix; semianalytic EXIT chart optimization method; systematic GIRA codes design; Convergence; Decoding; Information processing; Parity check codes; Systematics; Transfer functions; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Turbo Codes and Iterative Information Processing (ISTC), 2014 8th International Symposium on

Conference_Location

Bremen

Type

conf

DOI

10.1109/ISTC.2014.6955075

Filename

6955075