Abstract
Lattice-reduction is an effective technique to improve the performance of MIMO data detection. This paper presents a quantization error reduction scheme for MIMO detection based on orthogonal lattices. The motivation of the proposed detection is to solve the problem of degrading the performance due to the rounding quantization error in the signal estimate stage. The simulation results exhibit that the proposed detection can achieve the near-ML performance with a little additional complexity in the high Eb/N0 region. In addition, this quantization error reduction scheme is efficient even for the high modulation order.
