Title :
Finite-length MIMO decision feedback equalization for space-time block-coded signals over multipath-fading channels
Author :
Al-Dhahir, Naofal ; Naguib, Ayman F. ; Calderbank, A.R.
Author_Institution :
AT&T Shannon Lab., Florham Park, NJ, USA
fDate :
7/1/2001 12:00:00 AM
Abstract :
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
Keywords :
FIR filters; MIMO systems; block codes; cellular radio; decision feedback equalisers; decoding; fading channels; feedforward; intersymbol interference; multipath channels; receiving antennas; transmitting antennas; GSM; MIMO feedforward linear equalization; MSE DFE; block-coded transmission; combined equalization/decoding; decision feedback equalization; diversity combining; feedforward FIR filters; finite-length MIMO DFE; frequency-selective fading; intersymbol interference; linear processing complexity; mean-square-error; multi-input-multi-output equalizer; multipath-fading channels; optimized-delay DFE; performance comparisons; receive antennas; single-transmit/single-receive antenna; space-time block-coded signals; transmit antennas; urban EDGE channel; Block codes; Decision feedback equalizers; Fading; Finite impulse response filter; GSM; MIMO; Maximum likelihood decoding; Multipath channels; Receiving antennas; Transmitting antennas;
Journal_Title :
Vehicular Technology, IEEE Transactions on
