Patent ID: 9252852
Filing Date: 2016-02-02
CPC Classification: H04B,H04L

Claim Text:
1. A method for transmitting, by a transmitting end, a feedback using a codebook in a wireless communication system supporting a multi-dimensional antenna, the method comprising: determining a first codeword for a first horizontal antenna group and a second codeword for a second horizontal antenna group among a plurality of horizontal antenna groups, wherein each of the first and the second horizontal antenna groups includes a plurality of horizontal antennas having an identical vertical antenna port; determining a third codeword for each of antenna groups other than the first and second horizontal antenna groups, from among the plurality of horizontal antenna groups; and feeding back at least one of the first, second and third codewords to a receiving end, wherein the third codeword is configured to have a linear phase increment value corresponding to a difference between a first vertical antenna port index of the first horizontal antenna group and a second vertical antenna port index of the second horizontal antenna group.