An Extended Semidefinite-Relaxation Method for MIMO Detection of High-Order QAM Signals

Shu Cai; Kehu Yang

ChinaCom2009-Signal Processing for Communications Symposium

Research Article

An Extended Semidefinite-Relaxation Method for MIMO Detection of High-Order QAM Signals

Cite: BibTeX Plain Text

@INPROCEEDINGS{10.1109/CHINACOM.2009.5339927,
    author={Shu Cai and Kehu Yang},
    title={An Extended Semidefinite-Relaxation Method for MIMO Detection of High-Order QAM Signals},
    proceedings={ChinaCom2009-Signal Processing for Communications Symposium},
    publisher={IEEE},
    proceedings_a={CHINACOM2009-SPC},
    year={2009},
    month={11},
    keywords={},
    doi={10.1109/CHINACOM.2009.5339927}
}

Shu Cai
Kehu Yang
Year: 2009
An Extended Semidefinite-Relaxation Method for MIMO Detection of High-Order QAM Signals
CHINACOM2009-SPC
IEEE
DOI: 10.1109/CHINACOM.2009.5339927

Shu Cai¹^,*, Kehu Yang¹^,*

1: South Taibai Road #2, 710071, Xi’an, China Phone & fax: (029) 8820 4424

*Contact email: caishu@xidian.edu.cn, yang@xidian.edu.cn

Abstract

In this paper, we propose an extended semidefinite-relaxation (SDR) method for multiple-input multiple-output (MIMO) detection of high-order QAM signals. In the proposed method, high-order QAM constellations are represented by an equivalent virtually-antipodal form. Based on this form, the alphabet relaxation components in the existing SDR formulation can be constrained to the original alphabet set by additional inequalities. Simulation results demonstrate that the extended SDR method provides an alternative to the existing SDR algorithm of with compact formulation for arbitrary constellations.

Published: 2009-11-20
Publisher: IEEE
Modified: 2010-05-16

: http://dx.doi.org/10.1109/CHINACOM.2009.5339927