Patent ID: 6463043
Filing Date: 2002-10-08
Classification: H04B,H04L

Abstract:
An estimator for determining a complex channel gain estimation from a transformer output and a non-coherent combiner output, comprising:a selector for determining an orthogonal function index from said non-coherent combiner output, and determining a corresponding complex value from said transformer output using said orthogonal function index, an envelope detector for calculating the squared magnitude of said transformer output, and for generating at least one M-ary real value, wherein M is an integer greater than one, a weighting unit coupled to said envelope detector for estimating a signal quality coefficient from said at least one M-ary real value and generating at least one weighted symbol by multiplying said signal quality coefficient by said corresponding complex value, at least one store unit coupled to said weighting unit for storing said at least one weighted symbol, an averager coupled to said at least one store unit for averaging said at least one weighted symbol, and a controller coupled to said non-coherent combiner output, said at least one store unit, and said averager, for resetting said at least one store unit and for controlling said averager, thereby determining said complex channel gain estimation.