A subspace-based approach to blind channel identification in pulse shapingOFDM/OQAM systems

We introduce a subspace-based algorithm for the blind identification of tim e-dispersive channels in pulse shaping OFDM systems based on offset quadrat ure amplitude modulation (OFDM/OQAM). Our approach exploits cyclostationari ty induced by the use of overlapping pulse shaping filters and uses second- order statistics only. The proposed method is similar in spirit to modulati on-induced cyclostationarity. Our algorithm assumes symbol-rate sampling in the receiver and does not require knowledge of the channel order. We provi de simulation results demonstrating the performance of the new method.