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Sum-Capacity of Massive MIMO Systems Using Vandermonde Matrices

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posted on 2020-01-15, 20:53 authored by Claudio Ferreira Dias, Michelle S. P. Facina, Felipe Augusto Pereira de FigueiredoFelipe Augusto Pereira de Figueiredo, Eduardo Rodrigues de Lima, Gustavo Fraidenraich
In this paper, we use a series expansion to calculate the sum-capacity of a massive Multiple-Input MultipleOutput (MIMO) system under propagation environment described by a dominant line-of-sight. The sum-capacity is written as Taylor’s series where each term is a function of the mean trace of k-th power of the channel matrix W. We analytically derive the mean trace of first, second, third, and fourth moments of W. Although the series is infinite, our numerical results show that only a few terms can tightly approximate the exact sum capacity. Numerical results corroborate our analytical expressions.


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