| Abstract: | This paper experimentally verifies how the parallelogram planar array (PPA) can improve the space division multiplexing (SDM) performance of multiuser massive multiple‐input multiple‐output (MIMO) in line‐of‐sight (LOS) channels. PPA can reduce the spatial channel correlation (inter‐user correlation) without any increase in processing load. Channel state information (CSI) of up to 94 antenna elements is measured with simplified test equipment in an outdoor propagation environment. Assessment of the measured CSI confirms the effectiveness of PPA in terms of reduced spatial channel correlation and its higher order SDM ability with simplified user scheduling. |
