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• W4205328577 endingPage "4521" @default.
• W4205328577 startingPage "4509" @default.
• W4205328577 abstract "An irregular tiled array technique is proposed for the application of massive MIMO systems, where the uniformly spaced antenna array elements are irregularly divided into subarrays fed by only one radio frequency (RF) chain separately. As compared to conventional beamforming architecture, the number of RF chains is reduced to one-half or one-quarter of the original number by using domino-shaped subarrays or tetromino-shaped subarrays, respectively. Two beamforming architectures for such a framework are proposed and a minimum mean square error (MMSE) method is applied to design the layouts of irregular arrays efficiently. In the framework of single-user massive MIMO systems, numerical simulation results show that the proposed architectures outperform conventional beamforming architectures and antenna selection architecture under the same number of RF chains conditions. With saving half of the transceivers, the loss of gain of the state-of-the-art sparsely sampled array is 1.9dB in the broadside and 2.2 dB for scanning to 30° in comparison with reference array (i.e., one transceiver per element). By contrast, there is no loss of gain of domino-shaped irregular array (i.e., one transceiver per two elements) in the broadside as compared to reference array and the loss of gain will be about 1.5dB for scanning to 30°." @default.
• W4205328577 created "2022-01-26" @default.
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• W4205328577 date "2022-06-01" @default.
• W4205328577 modified "2023-10-13" @default.
• W4205328577 title "An Irregular Tiled Array Technique for Massive MIMO Systems" @default.
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• W4205328577 doi "https://doi.org/10.1109/twc.2021.3130628" @default.
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