Patent ID: 7489746
Filing Date: 2009-02-10
Classification: H04B,H04L

Abstract:
1. A wireless receiver that receives a received signal from a wireless multiple-input, multiple-output (MIMO) channel and detects from the received signal a maximum likelihood for a corresponding transmitted signal, the wireless receiver comprising: an input for receiving N input signals comprising the received signal, N being greater than one; storage for a channel matrix H; logic for calculating a matrix Q and a matrix R from H such that H=QR and R has at least one more real term than H, at least one more zero term than H, or both; storage for matrix Q and matrix R; a maximum likelihood detector that determines the maximum likelihood for the corresponding transmitted signal using distance comparisons for a plurality of considered transmitted signals, wherein the plurality of considered transmitted signals is a subset of less than all the possible transmitted signals and equal to c