Patent ID: 6430237
Filing Date: 2002-08-06
Classification: H04B,H04L

Abstract:
A method for evaluating quality of a communication channel at a receiving node, said method comprising steps:receiving a first representation of a signal to be measured to produce a received signal; detecting information in at least one representation of said signal to be measured in order to produce a detected signal; thereafter remapping said detected signal into a format corresponding to said received signal to obtain a remapped signal; cross-correlating said remapped signal and said received signal to obtain a cross-correlated signal; squaring amplitude of said received signal to produce a power representation of said received signal; squaring amplitude of said cross-correlated signal to produce a power representation of said cross-correlated signal; subtracting said cross-correlated signal power representation from said received signal power representation to obtain, as a difference signal, an interference signal power representation; and dividing said received signal power representation by said interference signal power representation to obtain a signal-to-interference ratio.