Impact of Channel Aging on Zero-Forcing Precoding in Cell-Free Massive MIMO Systems
نویسندگان
چکیده
In the context of cell-free massive multi-input multi-output (mMIMO), zero-forcing precoding (ZFP) requires exchange instantaneous channel state information and precoded data symbols via a fronthaul network. It causes considerable propagation processing delays, which degrade performance. This letter analyzes impact aging on performance ZFP in mMIMO. The effects not only user mobility but also phase noise are considered. Numerical results terms per-user spectral efficiency illustrated.
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ژورنال
عنوان ژورنال: IEEE Communications Letters
سال: 2021
ISSN: ['1558-2558', '1089-7798', '2373-7891']
DOI: https://doi.org/10.1109/lcomm.2021.3094266