公开(公告)号：US10651905B1

公开(公告)日：2020-05-12

申请号：US16256301

申请日：2019-01-24

Applicant: Samsung Electronics Co., Ltd.

Inventor： Qi Zhan ,  Hongbing Cheng ,  Kee-Bong Song

IPC: H04B7/04 ,  H04B7/0456 ,  H04L27/26 ,  H04B7/06 ,  H04B7/0417

Abstract: A method and system for selecting precoding matrix index are herein disclosed. The method includes determining a precoder and candidate beams, selecting base beams based on a correlation power between the determined precoder and determined candidate beams, and estimating amplitude coefficients and cophase coefficients based on a correlation between the determined precoder and the selected base beams.

公开(公告)号：US20200136694A1

公开(公告)日：2020-04-30

申请号：US16354024

申请日：2019-03-14

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mehdi Ganji ,  Hongbing Cheng ,  Kee-Bong Song ,  Qi Zhan

IPC: H04B7/0456 ,  H04B7/06

Abstract: A method of designing a codebook for analog beamforming. In some embodiments, the method includes: generating a plurality of training points, based on a predefined distribution, each training point being a channel vector; generating, for each of a plurality of codewords, a respective initial value; assigning, in a first assignment operation, each of the training points to a respective desired codeword, the desired codeword maximizing a metric function of a beamforming gain for the training point over the codewords; updating, in a first updating operation, each of the codewords according to the training points assigned to it; and determining whether convergence is achieved; and in response to determining that convergence is achieved, determining a final codebook.