公开(公告)号：US20150172001A1

公开(公告)日：2015-06-18

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 ,  H04L1/02 ,  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：US20150154144A1

公开(公告)日：2015-06-04

申请号：US14556576

申请日：2014-12-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyeong Yeon KIM ,  Navneet BASUTKAR ,  Young Hwan PARK ,  Ki Taek BAE ,  Ho YANG

IPC: G06F15/82 ,  G06F9/30

CPC classification number: G06F9/3001 ,  G06F9/30021 ,  G06F9/30036 ,  G06F9/30098 ,  G06F9/30112

Abstract: An apparatus and a method for performing a single instruction multiple data (SIMD) operation using pairing of registers are provided. An example SIMD apparatus includes a first register configured to store first result data generated by dyadic operators, and a second register configured to store second result data generated by the dyadic operators. The first register and the second register may be paired with each other. Examples also include the use of more than two dyadic operators and/or registers, as well as intermediate registers.

Abstract translation: 提供了一种使用配对寄存器执行单指令多数据（SIMD）操作的装置和方法。 一个示例SIMD设备包括：第一寄存器，被配置为存储由二元运算符生成的第一结果数据;以及第二寄存器，被配置为存储由二进制运算符生成的第二结果数据。 第一寄存器和第二寄存器可以彼此配对。 示例还包括使用两个以上的二进制操作符和/或寄存器以及中间寄存器。

公开(公告)号：US20150146810A1

公开(公告)日：2015-05-28

申请号：US14518356

申请日：2014-10-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ki Taek BAE ,  Peng XUE ,  Kyeong Yeon KIM ,  Navneet BASUTKAR ,  Ho YANG

IPC: H04L27/38 ,  H04L1/00

CPC classification number: H04L27/38 ,  H04L25/067

Abstract: A method of performing a soft demapping, includes obtaining a signal from a symbol representing bits that is transmitted from a transmitter, and calculating a gradient of a reference line in a constellation for a bit based on a rotation angle and a channel state of the constellation. The method further includes selecting a candidate for each of lines that corresponds to a logic value of the bit from constellation points included in the constellation based on the signal and the gradient of the reference line, and calculating a log-likelihood ratio (LLR) of the bit based on the signal and the selected candidate for each of the lines.

Abstract translation: 执行软解映射的方法包括从表示从发送器发送的比特的符号获得信号，并且基于星座的旋转角度和信道状态来计算比特的星座图中的参考线的梯度 。 该方法还包括：基于参考线的信号和斜率，从包括在星座中的星座点中选择与该位的逻辑值对应的每行的候选，并且计算对数似然比（LLR） 该比特基于该信号和每条线路的选择的候选。

公开(公告)号：US20140270014A1

公开(公告)日：2014-09-18

申请号：US14200739

申请日：2014-03-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Peng XUE ,  Kyeong Yeon KIM ,  Ki Taek BAE ,  Navneet BASUTKAR ,  Ho YANG

IPC: H04L27/06

CPC classification number: H04L27/06 ,  H04L25/067 ,  H04L27/3444 ,  H04L27/38

Abstract: A soft demapping apparatus and method thereof includes a pre-processing unit to pre-process a reception signal obtained from a symbol representing bits. A candidate selection unit selects two candidates from among constellation points included in a constellation for each of the bits. A distance calculation unit calculates a Euclidean distance between the reception signal and the two candidates. A log-likelihood ratio (LLR) calculation unit calculates an LLR with respect to the bits based on the Euclidean distance between the reception signal and the two candidates.

Abstract translation: 软解映射装置及其方法包括：预处理单元，用于预处理从表示比特的符号获得的接收信号。 候选选择单元从针对每个位的星座中包括的星座点中选择两个候选。 距离计算单元计算接收信号与两个候选者之间的欧几里得距离。 对数似然比（LLR）计算单元基于接收信号和两个候选者之间的欧氏距离来计算相对于比特的LLR。

公开(公告)号：US20140254727A1

公开(公告)日：2014-09-11

申请号：US14199213

申请日：2014-03-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kyeong Yeon KIM ,  Ki Taek BAE ,  Ho YANG

IPC: H04B7/04

CPC classification number: H04B7/0417 ,  H04B7/0663 ,  H04L25/03891

Abstract: Provided is a method and apparatus for lattice reduction with reduced computational complexity. The apparatus and method include calculating an R matrix using sorted QR decomposition, and conducting an R-value test using an R-value based on diagonal elements of the R matrix and a threshold value. The R matrix is an upper triangular matrix. The apparatus and method further execute a loop comprising a size reduction and a conditional update of a basis vector corresponding to a column element of the R matrix in response to the R-value being greater than or equal to the threshold value. The apparatus and method conduct another R-value test based on the R matrix comprising the updated basis vector in response to the basis vector being updated.

Abstract translation: 提供了一种降低计算复杂度的晶格简化方法和装置。 该装置和方法包括使用排序的QR分解来计算R矩阵，并且使用基于R矩阵的对角元素和阈值的R值进行R值测试。 R矩阵是上三角矩阵。 所述装置和方法还响应于所述R值大于或等于所述阈值执行包括对应于所述R矩阵的列元素的基矢量的大小减小和条件更新的循环。 该装置和方法响应于正在更新的基本向量，基于包括更新的基本向量的R矩阵进行另一R值测试。