Patent ID: 7012966
Filing Date: 2006-03-14
Classification: H04L

Abstract:
1. A method of characterizing one or more communication channels, comprising: receiving a set of first symbols associated with a first communication channel; receiving a set of second symbols associated with a second communication channel; characterizing at least a first communication channel based on at least the set of first symbols and the set of second symbols to produce a set of first channel characteristics; wherein characterizing one or more communication channels is performed by selecting a plurality of training symbols disposed within said at least the set of first symbols and the set of second symbols, where a correlation between two different sets of said training symbols is zero; wherein at least the first communication channel is based on a constant-modulus technique; wherein characterizing the first communication channel includes; wherein determining the set of first channel characteristics includes determining at least a set of first pre-estimates {overscore (h)} wherein the set of first pre-estimates {overscore (h)} wherein characterizing the first communication channel further includes time-averaging at least one pre-estimate to produce a set of time-averaged estimates.