Patent ID: 8472565

Claim:
A method of processing a signal in a receiving terminal having a plurality of antennas, the method comprising: demapping a symbol signal received via the plurality of antennas to a bit signal according to a mapping rule that is adaptively determined; extracting reliability information for the bit signal obtained from the demapping; and re-performing the demapping of the symbol signal using the reliability information, wherein determining the mapping rule comprises: calculating a mean bit error value for each of one or more available mapping rules, a harmonic mean of a minimum Euclidean distance in an error floor and a non-convergence harmonic mean of a minimum Euclidean distance; dividing the one or more available mapping rules into at least one mapping group according to the mean bit error value; selecting at least one mapping rule having a biggest harmonic mean of the minimum Euclidean distance in the error floor within each of the at least one mapping group; and selecting at least one mapping rule having a biggest non-convergence harmonic mean of the minimum Euclidean distance from the selected at least one mapping rule.