Fig. 2From: Deep learning-based DOA estimation for hybrid massive MIMO receive array with overlapped subarraysExamples of OSA and other hybrid array architectures, corresponding to the part of Fig. 1 framed by dashed lines, where \(K=2\) and \(M=6\). a OSA with \(M_s=4\) and \(\Delta M_s=2\), b non-overlapped subarray (NOSA) with \(M_s=3\) and \(\Delta M_s=0\), c fully-connected (FC) with \(M_s=\Delta M_s=6\)Back to article page