Efficient computation of symbol statistics from bit a priori information in turbo receivers

Authors:
Jianfeng Liu;Hilde Vanhaute;Marc Moonen;André Bourdoux;Hugo De Man
Affiliations:
Samsung Electronics Co. Ltd., Yougin-city, Gyeonggi-Do, Korea and Department of Electrical Engineering, K.U.Leuven, Heverlee, Belgium and IMEC vzw, HeverIee, Belgium;Department of Electrical Engineering, K. U. Leuven, Leuven, Belgium;Department of Electrical Engineering, K. U. Leuven, Leuven, Belgium;IMEC vzw, Leuven, Belgium;IMEC vzw, Leuven, Belgium
Venue:
IEEE Transactions on Communications
Year:
2009

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Abstract

In this paper, an efficient computational scheme is proposed to calculate the symbol mean and variance from bit a priori information, when a so-called multilinear mapping is employed. The multilinear mapping is exploited to reduce the number of the terms needed for the calculation of the symbol mean and variance.