Comments on "On Favorable Propagation in Massive MIMO Systems and Different Antenna Configurations" [1]

09/18/2019

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by   S. Loyka, et al.

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It is shown that the condition of Theorem 1 in [1] never holds in practice and that Theorem 2 is incorrect under the stated condition. Extra assumptions or/and modifications are needed to make the conclusions of Theorem 1 and 2 above valid, which are provided below.