Abstract:In this paper, we present an efficient architecture of turbo decoder for IMT2000 system. We introduce a base 2 logarithmic maximum a-posteriori algorithm (IogzMAP) whose architecture is simpler than that of the conventional natural logarithmic MAP algorithm (1ogMAP). With logzMAP, we obtain a '2 function' which is simpler than the 'E function' used by lo&MAP. In order to implement the architecture of the 2 function, we use approximated binary logarithmic algorithm (ABLA) which has been usefully adopted in DSP.… Show more
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