公开(公告)号：US20200177248A1

公开(公告)日：2020-06-04

申请号：US16273632

申请日：2019-02-12

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyukjoon KWON ,  Xiaoqiang MA ,  Kee-Bong SONG

IPC: H04B7/0456 ,  H04B7/08 ,  H04L1/00

Abstract: A method and an apparatus in a multiple-input multiple-output (MIMO) wireless communication system are provided. A signal is received over a channel. The channel is decomposed into a plurality of virtual channels. Symbol detection is performed on each of the plurality of virtual channels using respective symbol detectors. At least one of the symbol detectors has a lower rank than that of the channel. Output from the symbol detectors is combined to obtain final log likelihood ration (LLR) values for layers of the channel. Decoding is performed using the final LLR values to output a decoded symbol value of the received signal.

公开(公告)号：US20190173718A1

公开(公告)日：2019-06-06

申请号：US16269223

申请日：2019-02-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaoqiang MA ,  Hongbing Cheng ,  Linbo Li ,  Jungwon Lee

IPC: H04L27/26

Abstract: An apparatus including a plurality of multipliers each configured to multiply correlations by a weight, wherein the correlations include a plurality of subsets of correlations, wherein the weight of each of the plurality of multipliers is uniquely different from the weights of at least two of the plurality of multipliers and the correlations; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.

公开(公告)号：US20180167254A1

公开(公告)日：2018-06-14

申请号：US15446673

申请日：2017-03-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Xiaoqiang MA ,  Hongbing Cheng ,  Linbo Li ,  Jungwon Lee

IPC: H04L27/26 ,  H04L7/06

CPC classification number: H04L27/2663 ,  H04L27/2601 ,  H04L27/2671 ,  H04L27/2675

Abstract: An apparatus and a method. The apparatus includes a plurality of correlation processors configured to each receive a group of samples and generate correlations of each group of samples; a plurality of multipliers each configured to multiply the correlations of one of the plurality of correlation processors by a weight, wherein the weight of at least one of the plurality of multipliers is different from the weight of at least another one of the plurality of multipliers; a summation processor configured to sum the weight multiplied correlations of the plurality of multipliers for time n, where n is an integer; and a coarse timing and coarse frequency processor configured to generate a coarse timing and a coarse frequency based on the sum.