Space-time receiver for wideband BLAST in rich-scattering wireless channels

Previous results in information theory have demonstrated the enormous capacity potential of wireless communication systems with antenna arrays at both the transmitter and receiver. To exploit this potential, the Bell-laboratories LAyered Space-Time (BLAST) architecture was proposed. BLAST systems transmit parallel data streams, simultaneously and on the same frequency, in a Multiple-Input Multiple-Output (MIMO) fashion. With rich multipath propagation, these different streams can be separated and recovered at the receiver. The analysis of BLAST presented thus far had always been strictly narrowband. In this paper, we extend the formulation by presenting a receiver devised for more general frequency-selective channels. This new receiver is evaluated-via simulation-in the context of a typical urban (TU) channel with excellent results.

[1]  Thomas L. Marzetta,et al.  BLAST training : Estimating Channel Characteristics for High-Capacity Space-Time Wireless , 1999 .

[2]  Inkyu Lee,et al.  Optimum space-time processors with dispersive interference-unified analysis and required filter span , 1999, 1999 IEEE International Conference on Communications (Cat. No. 99CH36311).

[3]  Anders Ahlén,et al.  Reuse within a cell-interference rejection or multiuser detection? , 1999, IEEE Trans. Commun..

[4]  Constantinos B. Papadias,et al.  Unbiased decision feedback equalization , 1998, Proceedings. 1998 IEEE International Symposium on Information Theory (Cat. No.98CH36252).

[5]  A.H. Sayed,et al.  A computationally-efficient FIR MMSE-DFE for multi-user communications , 1999, Conference Record of the Thirty-Third Asilomar Conference on Signals, Systems, and Computers (Cat. No.CH37020).

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

[7]  Reinaldo A. Valenzuela,et al.  Simplified processing for high spectral efficiency wireless communication employing multi-element arrays , 1999, IEEE J. Sel. Areas Commun..

[8]  Alexandra Duel-Hallen,et al.  A family of multiuser decision-feedback detectors for asynchronous code-division multiple-access channels , 1995, IEEE Trans. Commun..

[9]  Arogyaswami Paulraj,et al.  Space-time processing for wireless communications , 1997 .

[10]  A.J. Paulraj,et al.  Space-time processing for wireless communications , 1997, 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing.

[11]  Gerard J. Foschini,et al.  Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas , 1996, Bell Labs Technical Journal.

[12]  Andrew J. Viterbi,et al.  Very Low Rate Convolutional Codes for Maximum Theoretical Performance of Spread-Spectrum Multiple-Access Channels , 1990, IEEE J. Sel. Areas Commun..

[13]  Jack M. Winters,et al.  Optimum Combining in Digital Mobile Radio with Cochannel Interference , 1984, IEEE Journal on Selected Areas in Communications.

[14]  Alexandra Duel-Hallen,et al.  Equalizers for Multiple Input/Multiple Output Channels and PAM Systems with Cyclostationary Input Sequences , 1992, IEEE J. Sel. Areas Commun..

[15]  M. J. Gans,et al.  On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas , 1998, Wirel. Pers. Commun..