Performance Comparison of Multiple-Transmit Multiple-Receive V-BLAST Algorithms

BLAST, a MIMO wireless communication systems can achieve very high spectral efficiency in rich multipath environment through exploiting the extra space dimension. A simplified version of BLAST known as V-BLAST has been proposed and implemented. In this paper we compare the performance of various V-BLAST algorithms through computer simulations. The results show that the nonlinear detection schemes with interference cancellation (IC) have much better performance than linear detection schemes and Minimum Mean Squared Error schemes (MMSE) have better performance than Zero Forcing (ZF) schemes. The efficient square-root algorithm with IC shows very attractive property that having low complexity while keeping the good performance compared with conventional IC scheme. In our simulation, little improvement is observed for the Pre-match filtering plus IC scheme.

[1]  Reinaldo A. Valenzuela,et al.  V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel , 1998, 1998 URSI International Symposium on Signals, Systems, and Electronics. Conference Proceedings (Cat. No.98EX167).

[2]  Babak Hassibi,et al.  An efficient square-root algorithm for BLAST , 2000, 2000 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.00CH37100).

[3]  John M. Cioffi,et al.  Spatio-temporal coding for wireless communication , 1998, IEEE Trans. Commun..

[4]  John M. Cioffi,et al.  Combined ML and DFE decoding for the V-BLAST system , 2000, 2000 IEEE International Conference on Communications. ICC 2000. Global Convergence Through Communications. Conference Record.

[5]  Chi-Ying Tsui,et al.  A low complexity architecture of the V-BLAST system , 2000, 2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540).

[6]  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.

[7]  V. Newhouse.  Parametric beam-steering technique for acoustic waves with applications to signal processing , 1971 .

[8]  Xiaodong Li,et al.  Effects of iterative detection and decoding on the performance of BLAST , 2000, Globecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137).

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

[10]  Khaled Ben Letaief,et al.  Performance of packetized layered space-time detection over wireless links , 2001, Proceedings. Sixth IEEE Symposium on Computers and Communications.

[11]  Reinaldo A. Valenzuela,et al.  Detection algorithm and initial laboratory results using V-BLAST space-time communication architecture , 1999 .