Title :
Multi-user MIMO linear precoding schemes in OFDM systems
Author :
Liu, Peng ; Wu, Mu Qing ; Xu, Chun Xiu ; Zheng, Feng
Author_Institution :
Sch. of Inf. & Telecommun. Eng., Beijing Univ. of Post & Telecommun., Beijing, China
Abstract :
In this paper, several multi-user multiple-input multiple-output (MU-MIMO) linear precoding schemes with both perfect and imperfect channel state information (CSI) for downlink transmission are proposed. Compared to nonlinear precoding schemes which need perfect CSI to achieve the channel capacity, we focus on systems which are restricted to use only linear precoding schemes due to complexity constraints and limited feedback. The limited feedback and some improvement technologies have also been introduced. The proposed MU-MIMO schemes extend the point-to-point single-user precoding to point-to-multipoint multi-user precoding.
Keywords :
MIMO communication; OFDM modulation; precoding; OFDM systems; channel state information; complexity constraints; downlink transmission; multiuser MIMO linear precoding schemes; multiuser multiple input multiple output system; point-to-multipoint multiuser precoding; point-to-point single user precoding; Antennas; Downlink; Radio access networks; Variable speed drives; Wireless communication; MU-MIMO; limited feedback; linear precoding; multi-user interference;
Conference_Titel :
Computer Science and Information Technology (ICCSIT), 2010 3rd IEEE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-5537-9
DOI :
10.1109/ICCSIT.2010.5564646
