Improved system blind identification based on second-order cyclostationary statistics: A group delay approach

An improved system blind identification method based on secondorder cyclostationary statistics and the properties of group delay, has been proposed. This is achieved by applying a correction to the estimated phase (by the spectral correlation density of the system output) for the poles, in the group delay domain. The results indicate a significant improvement in system blind identification, in terms of root mean square error. Depending upon the signalto-noise ratio, the improvement in percentage normalized mean square error ranges between 20 and 50%.