Title :
Evaluation of MIMO channel non-stationarity
Author :
Aldayel, Omar ; Bengtsson, Martin ; Alshebeili, S.A.
Author_Institution :
Sch. of Electr. Eng., R. Inst. of Technol. (KTH), Stockholm, Sweden
Abstract :
Several MIMO processing algorithms have been proposed that exploit long-term channel statistics, relaying on the critical assumption that this long-term information is valid long enough. In this paper, we consider the Correlation Matrix Distance (CMD) method previously proposed for the evaluation of MIMO channel non-stationarity. We highlight a couple of problems with the CMD measure and propose two new metrics that are more appropriate for non-stationarity evaluation. The performance of the CMD method and new correlation matrix distance metrics is investigated using measured 4×4 MIMO channels. Both Line-of-Sight (LOS) and Non-LOS (NLOS) environments are considered.
Keywords :
MIMO communication; channel estimation; correlation methods; matrix algebra; wireless channels; MIMO channel nonstationarity; MIMO processing algorithms; correlation matrix distance method; line-of-sight environment; long term channel statistics; nonLOS environment; Antenna measurements; Channel estimation; Correlation; Eigenvalues and eigenfunctions; MIMO; Receiving antennas; Channel Non-Stationarity; Correlation Matrix Distance; MIMO;
Conference_Titel :
Signal Processing Conference (EUSIPCO), 2013 Proceedings of the 21st European
Conference_Location :
Marrakech