Patent ID: 9584206
Date: 2017-02-28
CPC Classifications: H04B

Claim:
1. A method for operating a non-orthogonal multiple access (NOMA) scheme by a base station (BS) in a multiuser beamforming system, the method comprising: receiving channel information related to channels from a plurality of terminals; determining channel correlations representing correlations between the channels based on the channel information; determining channel gain differences representing differences of gains for the channels based on the channel information; classifying the plurality of terminals into a plurality of groups based on the channel correlations and the channel gain differences; determining a beamforming vector for each of the plurality of groups based on the channel information of terminals in each of the plurality of groups; allocating power to the terminals in each of the plurality of groups; and forming a beam for each of the plurality of groups based on the allocated power and the determined beamforming vector.