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Main Authors:	Qin, Ziao, Yin, Haifan
Format:	Preprint
Published:	2024
Subjects:	Information Theory Signal Processing
Online Access:	https://arxiv.org/abs/2410.04475
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author	Qin, Ziao Yin, Haifan
author_facet	Qin, Ziao Yin, Haifan
contents	The timely precoding of frequency division duplex (FDD) massive multiple-input multiple-output (MIMO) systems is a substantial challenge in practice, especially in mobile environments. In order to improve the precoding performance and reduce the precoding complexity, we propose a partial reciprocity-based precoding matrix prediction scheme and further reduce its complexity by exploiting the channel gram matrix. We prove that the precoders can be predicted through a closed-form eigenvector interpolation which was based on the periodic eigenvector samples. Numerical results validate the performance improvements of our schemes over the conventional schemes from 30 km/h to 500 km/h of moving speed.
format	Preprint
id	arxiv_https___arxiv_org_abs_2410_04475
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Partial reciprocity-based precoding matrix prediction in FDD massive MIMO with mobility Qin, Ziao Yin, Haifan Information Theory Signal Processing The timely precoding of frequency division duplex (FDD) massive multiple-input multiple-output (MIMO) systems is a substantial challenge in practice, especially in mobile environments. In order to improve the precoding performance and reduce the precoding complexity, we propose a partial reciprocity-based precoding matrix prediction scheme and further reduce its complexity by exploiting the channel gram matrix. We prove that the precoders can be predicted through a closed-form eigenvector interpolation which was based on the periodic eigenvector samples. Numerical results validate the performance improvements of our schemes over the conventional schemes from 30 km/h to 500 km/h of moving speed.
title	Partial reciprocity-based precoding matrix prediction in FDD massive MIMO with mobility
topic	Information Theory Signal Processing
url	https://arxiv.org/abs/2410.04475

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