Patent Document ID: 20110019777
Application ID: 12899280
Patent Flag: 0

Claim One:
1. Apparatus for detecting a block of data symbols received at a communication station, said apparatus comprising: a decider for receiving a signal matrix representation of the block of data symbols, a channel matrix representation of channel conditions, and a permutation of the channel matrix representation, and for providing a first decision output of the received block and a first error calculation of the first decided output, and for providing a second decision output of the received block and a second error calculation of the second decision output; wherein: the first decision output is a first hard decision value formed in response to a first soft decision value, the first soft decision value formed in response to the received signal matrix representation and a first decomposed matrix of the channel matrix representation; the second decision output is a second hard decision value formed in response to a second soft decision value, the second soft decision value formed in response to the received signal matrix representation and of a first decomposed matrix of the permutated channel matrix representation; and a selector for selecting either the first decision output or the second decision output in response to a comparison of the first error calculation and the second error calculation.