Two Step SOVA-Based Decoding Algorithm for Tailbiting Codes

Ortin, J. ; Garcia, P. (Universidad de Zaragoza) ; Gutierrez, F. (Universidad de Zaragoza) ; Valdovinos, A. (Universidad de Zaragoza)

Resumen: Abstract—In this work we propose a novel decoding algorithm for tailbiting convolutional codes and evaluate its performance over different channels. The proposed method consists on a fixed two-step Viterbi decoding of the received data. In the first step, an estimation of the most likely state is performed based on a SOVA decoding. The second step consists of a conventional Viterbi decoding that employs the state estimated in the previous step as the initial and final states of the trellis. Simulations results show a performance close to that of maximum-likelihood decoding.

Idioma: Inglés

Año: 2009

Publicado en: IEEE COMMUNICATIONS LETTERS 13, 7 (2009), 510-512
ISSN: 1089-7798

Factor impacto JCR: 1.14 (2009)

Categ. JCR: TELECOMMUNICATIONS rank: 24 / 74 = 0.324 (2009) - Q2 - T1

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Teoría Señal y Comunicac. (Dpto. Ingeniería Electrón.Com.)
Área (Departamento): Área Ingeniería Telemática (Dpto. Ingeniería Electrón.Com.)