Title :
Combined Forward and Backward Lattice Reduction Aided MMSE Detection in MIMO Systems
Author :
Fujino, Tadashi ; Shimokawa, Tetsuyoshi
Author_Institution :
Univ. of Electro-Commun., Chofu
Abstract :
This paper proposes a combined forward and backward lattice reduction scheme to improve estimation of transmitted signals in lattice-reduction aided (LRA) MMSE MIMO systems. The cross-correlation between the forward and the backward transform matrices is also analyzed to make sure that the proposed detector achieves more reliable estimates. The proposed detector achieves better BER performance than the conventional LRA detector. The achieved BER curve is improved by 3.5 dB at BER=10-5 over the curve of the conventional LRA MMSE detector in the 8times8 MIMO.
Keywords :
MIMO communication; channel capacity; error statistics; least mean squares methods; matrix algebra; signal detection; wireless channels; BER performance; LRA detector; MIMO systems; bit error rate; channel capacity; cross-correlation; lattice-reduction aided MMSE MIMO systems; minimum mean square error methods; multiple-input multiple-output communication; transform matrix; Bit error rate; Channel capacity; Detectors; Estimation; Gaussian processes; Lattices; MIMO; Maximum likelihood detection; Receiving antennas; Scattering;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th
Conference_Location :
Calgary, BC
Print_ISBN :
978-1-4244-1721-6
Electronic_ISBN :
1090-3038
DOI :
10.1109/VETECF.2008.283