Icheon Kim Kwonyeol Park Sanghyun Lee Min-Ho Shin Jonghan Kim Performance of Limited Feedback for Best Companion Grouping in Multi-user MIMO System. 1-5 2022 VTC Spring https://doi.org/10.1109/VTC2022-Spring54318.2022.9860448 conf/vtc/2022s db/conf/vtc/vtc2022s.html#KimPLSK22