Scarce state transition turbo decoding based on re-encoding combined with a dummy insertion

Haisheng Liu (1, 2) , Christophe Jego (1, 2) , Emmanuel Boutillon (3) , Michel Jezequel (1, 2) , Jean-Philippe Diguet (4)

1 Lab-STICC_TB_CACS_IAS
2 ELEC - Département Electronique
3 LESTER - Laboratoire d'Electronique des Systèmes TEmps Réel
4 Lab-STICC_UBS_CACS_MOCS

An efficient way to reduce the dynamic power dissipation in the turbo decoder is presented. This technique is based on a dynamic re-encoding of the received messages. The idea is to decrease the state transition activity of the trellis-based algorithms by replacing the classical direct decoding of the random noisy codewords by an equivalent decoding of an almost “all zero” codewords in order to keep the survivor path on the “zero path”.

Mots clés: Turbo-code; low-power; re-encoding

Domaines: Electronique

Haisheng Liu, Christophe Jego, Emmanuel Boutillon, Michel Jezequel, Jean-Philippe Diguet. Scarce state transition turbo decoding based on re-encoding combined with a dummy insertion. Electronics Letters, 2009, 45 (16), pp. 846-848. ⟨hal-00417714⟩