Title :
Word Error Probability Estimation by Means of a Modified Viterbi Decoder
Author :
Fricke, Justus Ch ; Hoeher, Peter A.
Author_Institution :
Univ. of Kiel, Kiel
Abstract :
In this paper, we introduce a new method for calculating word error probabilities by means of a modified Viterbi decoder. The proposed method can be seen as an approximation of the reliability output Viterbi algorithm (ROVA). The results provided by the proposed algorithm are only slightly worse than that of the ROVA, given a significantly lower computational complexity especially for codes with large memory lengths. As a potential application, both algorithms are compared in reliability- based HARQ.
Keywords :
Viterbi decoding; automatic repeat request; error statistics; HARQ; Viterbi decoder; reliability output Viterbi algorithm; word error probability estimation; Automatic repeat request; Computational complexity; Convolutional codes; Error probability; Estimation error; Labeling; Maximum likelihood decoding; Maximum likelihood estimation; Viterbi algorithm;
Conference_Titel :
Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4244-0263-2
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2007.241
