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 (by13; the spectral correlation density of the system output) for the poles, in the group delay domain. The results indicate a significant improvement in system blind13; identification, in terms of root mean square error. Depending upon the signalto-noise ratio, the improvement in percentage normalized mean square error13; ranges between 20 and 50%.
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