公开(公告)号：US10153783B2

公开(公告)日：2018-12-11

申请号：US14477177

申请日：2014-09-04

Applicant: Samsung Electronics Co., Ltd.

Inventor： Gyu Bum Kyung ,  Jae Wook Shim ,  Ho Yang

IPC: H03M13/00 ,  H03M13/11 ,  H03M13/37

Abstract: A low density parity check (LDPC) decoder, including a memory configured to store a log-likelihood ratio (LLR) value of bits output from a demapper, and an LLR message exchanged between a variable node and an inspection node. The LDPC decoder further includes a node processor configured to select a decoding algorithm from a first algorithm and a second algorithm based on a code rate of an LDPC code, and decode the LLR message based on the selected decoding algorithm.

公开(公告)号：US09564993B2

公开(公告)日：2017-02-07

申请号：US14507049

申请日：2014-10-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyeong Yeon Kim ,  Gyu Bum Kyung ,  Ki Taek Bae ,  Ho Yang

IPC: H04L1/00 ,  H04L27/34 ,  H04L27/38

CPC classification number: H04L1/005 ,  H04L27/3444 ,  H04L27/38

Abstract: A method and apparatus to perform a soft demapping in a rotated quadrature amplitude modulation (QAM) based communication system is described. The method and the apparatus include pre-processing a symbol based on a priori information and performing a one-dimensional (1D) soft demapping on the pre-processed symbol, continuously.

Abstract translation: 描述了在基于旋转正交幅度调制（QAM）的通信系统中执行软解映射的方法和装置。 该方法和装置包括基于先验信息对符号进行预处理，并对预处理符号进行一维（1D）软解映射。

公开(公告)号：US09148310B2

公开(公告)日：2015-09-29

申请号：US14197005

申请日：2014-03-04

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Gyu Bum Kyung ,  Ho Yang

IPC: H04L25/02 ,  H04L1/20 ,  H04L25/03 ,  H04L25/06 ,  H04W80/04

CPC classification number: H04L25/0212 ,  H04L1/20 ,  H04L25/0202 ,  H04L25/022 ,  H04L25/0222 ,  H04L25/03038 ,  H04L25/067 ,  H04W80/04

Abstract: An apparatus and a method are provided including a parameter estimator, a controller, an initial channel estimator, and a channel estimator. The parameter estimator configured to estimate parameters related to a channel. The controller configured to select one of channel environments based on the parameters, and generate a control signal corresponding to the selected channel environment. The initial channel estimator configured to estimate an initial channel based on the control signal. The channel estimator configured to estimate a channel of remaining resource blocks, excluding resource blocks corresponding to a pilot signal, from among resource blocks, based on the initial channel and the control signal.

Abstract translation: 提供了一种装置和方法，包括参数估计器，控制器，初始信道估计器和信道估计器。 参数估计器被配置为估计与信道相关的参数。 所述控制器被配置为基于所述参数来选择一个信道环境，并且生成对应于所选择的信道环境的控制信号。 初始信道估计器被配置为基于控制信号来估计初始信道。 信道估计器，被配置为基于初始信道和控制信号从资源块中估计与导频信号相对应的资源块的剩余资源块的信道。

公开(公告)号：US10136261B2

公开(公告)日：2018-11-20

申请号：US14502253

申请日：2014-09-30

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jae Wook Shim ,  Gyu Bum Kyung ,  Ho Yang

IPC: H04W24/00 ,  H04W4/02 ,  G01S5/00 ,  H04W4/029

Abstract: An apparatus and method for transmitting and receiving data based on a location is disclosed, the apparatus for receiving the data, for example, a data receiver includes a location predictor configured to predict a location of the receiver based on location information of the receiver, a data rate calculator configured to calculate a predicted data rate during an interval based on communication environment information corresponding to the location of the receiver and the predicted location, and a buffer configured to backlog data received in advance based on the predicted data rate.