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Table 4 The ratio of spectral efficiency obtained by the proposed BF with imperfect CSI to that with perfect CSI, where N T =64 and ρ=0.7

From: Massive MIMO signal transmission in spatially correlated channel environments

N   0 (%) 1 (%) 2 (%) 3 (%) 4 (%) 5 (%) 6 (%) 7 (%)
Spectral efficiency σ mse=−10 dB 96 95 93 90 88 86 84 83
  σ mse=−5 dB 84 79 75 72 68 66 63 62