The USC Andrew and Erna Viterbi School of Engineering USC Signal and Image Processing Institute USC Ming Hsieh Department of Electrical Engineering University of Southern California

Technical Report USC-SIPI-218

“On Blind Identification of A Band-Limited Nonminimum-Phase Channel from Its Output Autocorrelation”

by Yuanjie Chen and Chrysostomos L. Nikias

September 1992

It has been well established in the literature that when the input to a linear time invariant (LTI) channel (system) is a continuous-time white noise, the identification of the phase of the channel from its output autocorrelation is impossible. To make the channel identification from its output autocorrelation unique, we need to know a priori the whole phase response of the channel. In this paper, we show that when the input is a discrete-time white noise sequence, what is needed to make the channel identification from its output autocorrelation unique is reduced to the phase response in the frequency range of .

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