Patent ID: 8532202
Filing Date: 2013-09-10
Classification: H04B,H04L

Abstract:
1. A method for generating soft-decision output values for a set of transmitted spatial streams in a multiple-input multiple-output (MIMO) communication system, comprising: looping over a plurality of constellation points for respective transmitted spatial streams to estimate values for other transmitted streams based at least in part on Reduced List Detection (RLD); determining a set of distance metrics as values of the plurality of constellation points for the respective transmitted spatial streams; and generating soft-decision outputs for the respective transmitted streams based at least in part on the set of distance metrics, wherein the plurality of constellation points are assigned to a particular spatial stream based on the signal strength of the spatial stream, the noise level of the spatial stream, the Signal-to-Noise Ratio (SNR) of the spatial stream, or the capacity of the spatial stream, and wherein the spatial streams are sorted in ascending order based on signal strength and a spatial stream with the weakest signal strength is looped over more constellation points than a spatial stream with a stronger signal strength, wherein the signal strength of a spatial stream is indicated by the absolute value of the (N