Open AccessInfluence of Extrinsic Information Scaling Coefficient on Double-Iterative Decoding Algorithm for Space-Time Turbo Codes with Large Number of Antennas
Author(s) -
Lucian Trifina,
Daniela Tărniceriu,
Ana-Mirela Rotopănescu
Publication year - 2011
Publication title -
advances in electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 23
eISSN - 1844-7600
pISSN - 1582-7445
DOI - 10.4316/aece.2011.01014
Subject(s) - turbo code , algorithm , decoding methods , computer science , serial concatenated convolutional codes , turbo , turbo equalizer , scaling , iterative method , mathematics , concatenated error correction code , block code , engineering , geometry , automotive engineering
This paper analyzes the extrinsic information scaling coefficient influence on double-iterative decoding algorithm for space-time turbo codes with large number of antennas. The max-log-APP algorithm is used, scaling both the extrinsic information in the turbo decoder and the one used at the input of the interference-canceling block. Scaling coefficients of 0.7 or 0.75 lead to a 0.5 dB coding gain compared to the no-scaling case, for one or more iterations to cancel the spatial interferences