Linear precoding scheme for MIMO twoway relay system with imperfect channel state information#br#
CHEN Xiaomin, SU Junxu, ZHU Qiuming, HU Xujun, FANG Zhu
Systems Engineering and Electronics . 2017, (12): 2796 -2802 .  DOI: 10.3969/j.issn.1001-506X.2017.12.24