Abstract:
This paper presents a study on the
interfacing between the turbo encoder and modulator.
The binary allocation of the bits from a turbo coded
symbol towards the modulator symbol can be done in
several ways. This study shows the performance of the
allocation modes taking into account the quadrature
amplitude modulation with 64 points and the Rice
fluctuating transmission channel. The simulations
presented show that the performance of the entire
transmission system, measured in coding gain may be
influenced by up to 1 dB by a suitable choice of the
allocation method.