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Published December 1994 | Published
Book Section - Chapter Open

Blind identification of FIR channels with multiple users via spatio-temporal processing


A new method is proposed for blind identification of possibly nonminimum phase FIR channels with multiple users. The technique exploits the structure of the signals received by an antenna array in both the temporal and spatial frequency domains. Although in the single antenna case it is necessary to use cyclostationary signals or higher order statistics to identify the magnitude and phase of the channel, the present authors circumvent such a requirement by exploiting certain multichannel features of the array. They show that if multiple users are present, the nonminimum phase channels associated with each user can still be identified from the second-order statistics, provided additional spatial structure exists.

Additional Information

© 1994 IEEE. This work was supported in part by the Advanced Research Projects Agency of the Department of Defense and was monitored by the Air Force Office of Scientific Research under contract F49620-93-1-0085. Support was also provided by the Army Research Office under grant DAAH04-93-G-0029.

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August 20, 2023
August 20, 2023