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arXiv · 2001.11879

Low-Complexity Distributed XL-MIMO for Multiuser Detection

Victor Croisfelt Rodrigues·Abolfazl Amiri·Taufik Abrão·Elisabeth de Carvalho·Petar Popovski
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Abstract

In this paper, the zero-forcing and regularized zero-forcing schemes operating in crowded extra-large MIMO (XL-MIMO) scenarios with a fixed number of subarrays have been emulated using the randomized Kaczmarz algorithm (rKA). For that, non-stationary properties have been deployed through the concept of visibility regions when considering two different power normalization methods of non-stationary channels. We address the randomness design of rKA based on the exploitation of spatial non-stationary properties. Numerical results show that, in general, the proposed rKA-based combiner applicable to XL-MIMO systems can considerably decrease computational complexity of the signal detector by paying with small performance losses.

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Victor Croisfelt Rodrigues, Abolfazl Amiri, Taufik Abrão, Elisabeth de Carvalho, Petar Popovski. 2020-01-31. Low-Complexity Distributed XL-MIMO for Multiuser Detection. https://arxiv.org/abs/2001.11879

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