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Influence of Extrinsic Information Scaling Coefficient on Double-Iterative Decoding Algorithm for Space-Time Turbo Codes with Large Number of AntennasTRIFINA, L. , TARNICERIU, D. , ROTOPANESCU, A.-M.
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space-time turbo codes, double iterative MMSE receiver, max-log-APP decoding, extrinsic information scaling
decoding(6), codes(6), turbo(5), communications(5), soft(4), information(4), biglieri(4)
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About this article
Date of Publication: 2011-02-27
Volume 11, Issue 1, Year 2011, On page(s): 85 - 90
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2011.01014
Web of Science Accession Number: 000288761800014
SCOPUS ID: 79955954462
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.
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