Title :
Indoor experiment of multi-user MIMO user selection algorithm based on chordal distance
Author :
Taniguchi, Masaaki ; Murata, Hidekazu ; Yoshida, Sigeru ; Yamamoto, Koji ; Umehara, Daisuke ; Denno, Satoshi ; Morikura, Masahiro
Author_Institution :
Grad. Sch. of Inf., Kyoto Univ., Kyoto, Japan
Abstract :
A transmission experiment of a multi-user MIMO system with user selection and linear spatial precoding is conducted and the results are reported. As a low-complexity user selection algorithm, the chordal distance-based user selection (CDUS) algorithm is employed. The testbed used in the experiment is implemented by taking full advantage of the software-defined radio. An amplify-and-forward-based simple channel estimation method is adopted. As a result of the experiment in a conference room, the CDUS algorithm improved both the power efficiency and the interference suppression accuracy compared to the round-robin user selection.
Keywords :
MIMO communication; amplify and forward communication; channel estimation; indoor communication; interference suppression; multi-access systems; precoding; software radio; amplify-and-forward; channel estimation; chordal distance-based user selection algorithm; indoor experiment; interference suppression; linear spatial precoding; multiuser MIMO user selection algorithm; power efficiency; round-robin user selection; software-defined radio; Antennas; Band-pass filters; Channel estimation; Downlink; MIMO; Radio frequency; Uplink;
Conference_Titel :
Global Communications Conference (GLOBECOM), 2013 IEEE
Conference_Location :
Atlanta, GA
DOI :
10.1109/GLOCOM.2013.6831692
