关于5G PMI预编码矩阵指示原理的图形化描述，比较形象

内容简介：5G NR in BULLETS 478 13.6.3 PRECODING MATRIX INDICATOR  The Precoding Matrix Indicator (PMI) allows the UE to report its preferred precoding for downlink transmissions on the PDSCH. The PMI is applicable to closed loop and semi-open loop transmission schemes. In the case of semi-open loop transmis...