tailieunhanh - An efficient CSI feedback scheme for dual-polarized massive MIMO
As an effective solution to the tradeoff between array size and the number of antenna elements, dual polarization antenna is widely utilized in massive MIMO systems. However, existing channel state information (CSI) feedback schemes are not suitable for dual-polarized massive MIMO as they ignore the polarization leakage between the polarization directions, causing significant performance degradation. To facilitate accurate channel acquisition, this paper proposes a practical channel model for dual-polarized massive MIMO by taking polarization leakage into consideration. The model formulates the channel as the sum of two components, ., the ideal polarization channel and the polarization leakage channel between the polarization directions. | An efficient CSI feedback scheme for dual-polarized massive MIMO
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