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• W3201343766 startingPage "8534" @default.
• W3201343766 abstract "Future mobile systems have shown a growing trend towards wider frequency bands, larger antenna arrays, and more user equipment, simultaneously expanding the channel in the frequency, space, and user domains. However, the huge size of the multi-domain channel brings great challenges to the acquisition of channel state information (CSI), especially in frequency division duplex (FDD) massive multiple input multiple output (MIMO) systems. In this paper, we propose a multi-domain channel extrapolation scheme that can reconstruct the huge multi-domain channel with low pilot overhead. Specifically, information on the environment shared by multiple domains is utilized for the design of a low-complexity channel extrapolation algorithm. Moreover, we investigate the patterns of sparse pilots and antenna selection by establishing a theoretical framework for the performance analysis of the patterns. We further propose a sparse random pattern design, which can legitimately obtain a set of patterns that are suitable for channel extrapolations. Numerical results demonstrate that we can accurately extrapolate the multi-domain channel using our proposed channel extrapolation scheme and our designed sparse random patterns." @default.
• W3201343766 created "2021-09-27" @default.
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• W3201343766 date "2021-12-01" @default.
• W3201343766 modified "2023-10-16" @default.
• W3201343766 title "Multi-Domain Channel Extrapolation for FDD Massive MIMO Systems" @default.
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• W3201343766 doi "https://doi.org/10.1109/tcomm.2021.3112593" @default.
• W3201343766 hasPublicationYear "2021" @default.
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