Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/12183
Author(s): | Rosário, F. Monteiro, F. A. Rodrigues, A. |
Date: | 2016 |
Title: | Fast matrix inversion updates for massive MIMO detection and precoding |
Volume: | 23 |
Number: | 1 |
Pages: | 75 - 79 |
ISSN: | 1070-9908 |
DOI (Digital Object Identifier): | 10.1109/LSP.2015.2500682 |
Keywords: | Massive MIMO Detection Linear receivers |
Abstract: | In this letter, methods and corresponding complexities for fast matrix inversion updates in the context of massive multiple-input multiple-output (MIMO) are studied. In particular, we propose an on-the-fly method to recompute the zero forcing (ZF) filter when a user is added or removed from the system. Additionally, we evaluate the recalculation of the inverse matrix after a new channel estimation is obtained for a given user. Results are evaluated numerically in terms of bit error rate (BER) using the Neumann series approximation as the initial inverse matrix. It is concluded that, with fewer operations, the performance after an update remains close to the initial one. |
Peerreviewed: | yes |
Access type: | Open Access |
Appears in Collections: | IT-RI - Artigos em revistas científicas internacionais com arbitragem científica |
Files in This Item:
File | Description | Size | Format | |
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SPL2016_authors_version.pdf | Pós-print | 302,79 kB | Adobe PDF | View/Open |
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