Patent ID: 7542743
Filing Date: 2009-06-02
Classification: H04L

Abstract:
1. A method comprising: performing a linear transformation by use of a transformation matrix W to convert a multiple-input-multiple-output communication channel matrix H into a transformed channel matrix WH and a receive signal vector r into a transformed receive signal vector Wr that allows a Euclidean distance metric to be represented in a partitioned form, wherein the Euclidean distance metric has a first partitioned term that depends on a candidate value x initializing recursion values corresponding to terms of the first and second partitioned terms for an initial x using the recursion values to compute a local minimum Euclidean distance metric for the initial x performing an ordered search over all x selecting a first global minimum from the local minimum Euclidean distance metrics found for x using a comparison of the first and second global minimum Euclidean distance metrics for each bit position k to determine a maximum likelihood information L