CPC H04B 7/0626 (2013.01) [H04B 7/0456 (2013.01)] | 15 Claims |
1. A method for reporting, by a user equipment (UE), channel state information (CSI) in a wireless communication system, the method comprising:
receiving, from a base station (BS), CSI related configuration information;
receiving, from the BS, a reference signal;
calculating the CSI based on the reference signal; and
transmitting, to the BS, the CSI,
wherein the calculating of the CSI includes quantizing an amplitude coefficient included in a matrix related to a codebook,
wherein a first set of a reference amplitude for quantization of the amplitude coefficient and a second set of a differential amplitude are predefined, and
wherein the amplitude coefficient is quantized based on a subset of (i) the first set and (ii) the second set.
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