Title :
A Novel Quadratic Programming Model for Soft-Input Soft-Output MIMO Detection
Author :
Li, Zi ; Pan, Chengkang ; Cai, Yueming ; Xu, Youyun
Author_Institution :
PLA Univ. of Sci. & Technol., Nanjing
Abstract :
In this letter, we propose a novel quadratic programming model for soft-input soft-output (SISO) multiple-input multiple-output (MIMO) detection that is compact for QAM constellations and easy to analyze. A semidefinite relaxation for this model is derived that can be solved by the interior-point method. We also give the sufficient conditions and necessary conditions to speed up the interior-point method.
Keywords :
MIMO communication; computational complexity; multiuser detection; quadratic programming; quadrature amplitude modulation; QAM constellation; SISO MIMO detection; interior-point method; multiple-input multiple-output detection; quadratic programming model; quadrature amplitude modulation; semidefinite relaxation; soft-input soft-output detection; Multiple-input multiple-output (MIMO) detector; semidefinite relaxation (SDR); soft-input soft-output (SISO);
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2007.906630
