A novel joint ML and DFE scheme for V-BLAST system

The use of multiple antennas at the transmitter and receiver results in enormous capacity increase. However, the performance of many current space-time architectures like Vertical Bell Laboratories Layered Space-Time (V-BLAST) is depend on the first sub-channel decoding's performance. In this paper, we present a novel detection algorithm, which joint ML and DFE scheme for the V-BLAST system. It can improve the V-BLAST system's performance by add ML modification module after the conventional detection scheme. It can also get the tradeoff between complexity and performance. Simulation result shows that the performance of the proposed scheme is better than that of conventional method.

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

[3]  John M. Cioffi,et al.  Iterative soft interference cancellation for multiple antenna systems , 2000, 2000 IEEE Wireless Communications and Networking Conference. Conference Record (Cat. No.00TH8540).

[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]  John M. Cioffi,et al.  On the relation between V-BLAST and the GDFE , 2001, IEEE Communications Letters.

[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.