TY - Journal of Beijing University of Posts and Telecommunications A1 - CHEN Ying, YIN Liang, SUN Jun, LI Shu-fang T1 - Research on Channel Reciprocity of Massive MIMO Time Division Duplex System Y1 - 2018-06-04 00:00:00.0 JF - Journal of Beijing University of Posts and Telecommunications JO - Journal of Beijing University of Posts and Telecommunications SP - 56 EP - 62 VL - 41 IS - 3 UR - {https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2017-164} N1 - 10.13190/j.jbupt.2017-164 ER -