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EXPLICIT CHANNEL INFORMATION FEEDBACK BASED ON HIGH-ORDER PCA DECOMPOSITION OR PCA COMPOSITION
EXPLICIT CHANNEL INFORMATION FEEDBACK BASED ON HIGH-ORDER PCA DECOMPOSITION OR PCA COMPOSITION
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机译：基于高阶PCA分解或PCA组成的显式信道信息反馈
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摘要
A communication device for providing an explicit channel state information, CSI, feedback in a wireless communication system includes a transceiver to receive, from a transmitter a radio signal via a radio time-variant frequency MIMO channel, the radio signal including downlink reference signals according to a reference signal configuration, and downlink signals including the reference signal configuration, and a processor. The processor estimates the CSI using measurements on the downlink reference signals of the radio channel according to the reference signal configuration over one or more time instants/slots, constructs a frequency-domain channel tensor using the CSI estimate, performs a higher-order principal component analysis, HO-PCA, on the channel tensor, identifies a plurality of dominant principal components of the channel tensor, thereby obtaining a compressed channel tensor, and reports to the transmitter the explicit CSI including the dominant principal components of the channel tensor.
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