Low Complexity MIMO Detection Based on the Slowest Descent Method

Author

Simoens, Frederik ; Van Welden, D. ; Wymeersch, Henk ; Moeneclaey, Marc

Author_Institution

Dept. of Telecommun. & Inf. Process., Ghent Univ.

Volume

11

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

429

Lastpage

431

Abstract

This contribution presents a novel multiple-input multiple-output (MIMO) detection scheme for quadrature amplitude modulation (QAM). The proposed method is based on the slowest descent (SD) method and is suitable for both iterative and non-iterative detectors. Similar to other low-complexity detection schemes, such as sphere decoding;, the new SD approach restricts the maximization/marginalization to a small set of candidate vectors. Simulation results indicate that the method achieves a close-to-optimal performance, with a complexity that scales only linearly with the number of transmit antennas

Keywords

MIMO communication; iterative decoding; maximum likelihood detection; quadrature amplitude modulation; QAM; iterative detector; low complexity MIMO scheme; multiple-input multiple-output detection; quadrature amplitude modulation; slowest descent method; Detectors; Iterative decoding; Iterative methods; MIMO; Maximum likelihood decoding; Maximum likelihood detection; Quadrature amplitude modulation; Receiving antennas; Transmitting antennas; Welding;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2007.062022

Filename

4202096