Deakin University
Browse

File(s) under permanent embargo

Approximate maximum a posteriori detection for multiple-input-multiple-output systems with bit-level lattice reduction-aided detectors and successive interference cancellation

journal contribution
posted on 2014-03-27, 00:00 authored by L Bai, Q Li, W Bai, Jinho ChoiJinho Choi
For iterative detection and decoding (IDD) in multiple-input-multiple-output (MIMO) systems, although the maximum a posteriori (MAP) detector can achieve an optimal performance, because of its prohibitively high computational complexity, various low-complexity approximate MAP detectors are studied. Among the existing MIMO detectors for the non-IDD receivers, lattice reduction (LR)-aided detectors can provide a near maximum-likelihood (ML) detector's performance with reasonably low complexity, and they could be modified to be used in the IDD receivers. In this study, the authors propose a bit-level LR-aided MIMO detector whose performance can approach that of the MAP detector, where a priori information is taken into account for soft-decisions. Furthermore, the proposed method can be extended to large dimensional MIMO systems by channel matrix decomposition and successive interference cancellation, by which a significant complexity reduction can be achieved. Through simulations and complexity analysis, it is shown that a near-optimal performance is obtained by the authors proposed low-complexity bit-level LR-aided detector for the IDD in the MIMO systems.

History

Journal

IET communications

Volume

8

Issue

5

Pagination

697 - 706

Publisher

Institution of Engineering and Technology

Location

Stevenage, Eng.

ISSN

1751-8628

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2014, The Institution of Engineering and Technology