A posteriori probability (APP) and max-log APP detection is widely used in soft-input soft-output detection. In contrast to bijective modulation schemes, there are important differences when applying these algorithms to non-bijective symbol constellations. In this letter the main differences are highlighted.
Cite
@article{arxiv.2102.04028,
title = {Max-log APP Detection for Non-bijective Symbol Constellations},
author = {Martin Damrath and Peter Adam Hoeher},
journal= {arXiv preprint arXiv:2102.04028},
year = {2021}
}