A maximum likelihood a posteriori probability detector

摘要

This invention relates to a communication device including the ML-APP detector coupled to at least two antennas will. The ML-APP detector comprises at least one Hx unit coupled to at least one LLR unit. Hx unit is one of all possible symbols that can be received part, that is, generates a special portion, transfers each generated symbol candidate to the LLR unit, the LLR unit is transferred to create another symbol candidate that is not part of the special portion and the conversion operation performed on the symbol candidates. In this way, all the possible symbol candidates are obtained by the LLR unit. LLR unit is to perform a cost calculation, and compares the symbol candidates to a received symbol. Symbol candidate yielding the lowest cost from the cost calculations of all possible symbol candidates is selected as the best candidate. Then, the soft information is the APP decoding is performed on the selected candidate using soft information associated with the selected candidate generated by the LLR units.