A Low Complexity Scheme for Transmit Diversity Over Frequency Selective Channels

A low complexity transmit diversity scheme is derived in this paper in order to overcome the prohibitive complexity imposed by the maximum likelihood detection for the systems with space-time block code (STBC) over frequency selective channels. By taking advantage of multipath propagation and exploiting temporal diversity gain, the proposed turbo equalization algorithm significantly improves the system performance compared to the original Alamouti algorithm as well as the conventional minimum mean square error (MMSE) detection scheme.

[1]  Andrew C. Singer,et al.  Turbo equalization: principles and new results , 2002, IEEE Trans. Commun..

[2]  Luc Vandendorpe,et al.  MMSE-based fractional turbo receiver for space-time BICM over frequency-selective MIMO fading channels , 2004, IEEE Transactions on Signal Processing.

[3]  H. Vincent Poor,et al.  Iterative (turbo) soft interference cancellation and decoding for coded CDMA , 1999, IEEE Trans. Commun..

[4]  Pei Xiao,et al.  Estimation of FWA MIMO Channels , 2006, 2006 IEEE Information Theory Workshop - ITW '06 Chengdu.

[5]  Tadashi Matsumoto,et al.  Space-time turbo equalization in frequency-selective MIMO channels , 2003, IEEE Trans. Veh. Technol..

[6]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[7]  Rolando Carrasco,et al.  Turbo Equalization For Space-Time Block Coded FWA Systems , 2006, 2006 IEEE Information Theory Workshop - ITW '06 Chengdu.

[8]  A. Robert Calderbank,et al.  Space-Time Codes for High Data Rate Wireless Communications : Performance criterion and Code Construction , 1998, IEEE Trans. Inf. Theory.

[9]  Stephan ten Brink,et al.  Convergence behavior of iteratively decoded parallel concatenated codes , 2001, IEEE Trans. Commun..

[10]  Xiaodong Wang,et al.  Iterative receivers for multiuser space-time coding systems , 2000, IEEE Journal on Selected Areas in Communications.