| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-input multi-output mobile communication technique capable of reducing overhead of spatial channel state information (CSI) feedback.SOLUTION: A receiver generates CSI by measuring spatial channel state information, generates multiple CSI components by decomposing the CSI, quantizes each of the multiple CSI components by use of a codebook, generates indexes indicating vectors or matrixes in the codebook, and feeds back the multiple indexes to a transmitter. |
