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Finite-length MIMO decision feedback equalization for space-time block-coded signals over multipath-fading channels

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3 Author(s)
Al-Dhahir, N. ; AT&T Shannon Lab., Florham Park, NJ, USA ; Naguib, A.F. ; Calderbank, A.R.

A finite-length optimized-delay multi-input-multi-output (MIMO) mean-square-error decision-feedback equalizer for space-time block-coded transmissions over multipath-fading channels is presented. Alamouti's (see IEEE J. Select. Areas Commun., p.1451-58, 1998) space-time block code with two transmit and two receive antennas on a typical urban EDGE channel is taken as a case study. We propose a combined equalization and decoding scheme under the constraint of linear processing complexity (no trellis search) at the receiver. Performance comparisons are made with the single-transmit/single-receive antenna case and the case of MIMO feedforward linear equalization only with no decision feedback

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Vehicular Technology, IEEE Transactions on  (Volume:50 ,  Issue: 4 )