An embodiment of a method for a multiple-antenna receiver is disclosed. For this embodiment of the method, a detector obtains a channel matrix and a symbol vector. Contents of the channel matrix and the symbol vector are accessed in order and out of order, where the out of order access of the contents of the channel matrix and the symbol vector respectively provide a reordered channel matrix and a reordered symbol vector. The channel matrix is decomposed with the symbol vector to obtain first decomposition inputs. The reordered channel matrix is decomposed with the reordered symbol vector to obtain second decomposition inputs. The first decomposition inputs are sphere detected to provide first candidates. The second decomposition inputs are sphere detected to provide second candidates. Reliability information is generated from the first candidates and the second candidates.