A Gram-Schmidt based lattice-reduction aided MMSE detection in MIMO systems

Authors:
Tadashi Fujino;Shinjiro Wakazono;Yusuke Sasaki
Affiliations:
The University of Electro-Communications, Chofu-shi, Tokyo, Japan;Sony Corporation, Tokyo, Japan and The University of Electro-Communications, Chofu-shi, Tokyo, Japan;The University of Electro-Communications, Chofu-shi, Tokyo, Japan
Venue:
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Year:
2009

Citing 2
Cited 0

Layer Error Characteristics of Lattice-Reduction Aided V-BLAST Detectors

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
An efficient square-root algorithm for BLAST

ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 02

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper proposes an improved lattice-reduction aided (LRA) MMSE detection based on the Gram-Schmidt (GS) procedure. The proposed detection reduces the column vectors of the MIMO channel matrix using the LLL algorithm and the GS procedure to create mutually purely orthogonal column vectors of the reduced channel matrix. Then the decision boundary becomes the same as that for the ML detection. Compared to the conventional LRA MMSE detector, the proposed detector achieves much closer BER performances to those for the ML detector in both the 4×4 MIMO and the 8×8 MIMO systems.