A Lattice-Reduction-Aided Soft Detector for Multiple-Input Multiple-Output Channels

— Lattice basis reduction is a powerful technique that enables a hard-output detector for a multiple-input multiple-output channel to approach maximum-likelihood performance with low complexity. In this work we propose a soft-output detector that combines latticereduction-aided detection and list decoding. The proposed algorithm performs nearly as well as the list-sphere detector but with much lower complexity. Numerical results reveal that the complexity per bit for the proposed algorithm decreases as the size of the QAM alphabet increases.

• Type: Conference
• Year: 2006
• Where: GLOBECOM
• Authors: David L. Milliner, John R. Barry
• Keywords: Detector, GLOBECOM 2006, Hard-output Detector, Lattice Basis Reduction, Telecommunications