公开(公告)号：US20150334587A1

公开(公告)日：2015-11-19

申请号：US14711132

申请日：2015-05-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ho-Il KIM ,  Da-Hae CHONG ,  Soo-Bok YEO

IPC: H04W24/08 ,  H04L12/26 ,  H04W76/04

CPC classification number: H04W76/048 ,  H04L1/1607 ,  H04L1/1671 ,  H04L1/1825 ,  H04L1/1838 ,  H04L43/0852 ,  H04W24/08 ,  H04W76/28

Abstract: A method of detecting indicator information received by a receiver of a wireless communication system is provided, and the method includes determining a threshold value that reduces costs incurred by a false alarm rate that decides discontinuous transmission (DTX) information transmitted from a transmitter as non-DTX information and a missed detection rate that decides non-DTX information transmitted from the transmitter as DTX information; and detecting the indicator information using the threshold value. The threshold value is determined based on a reception quality level for acknowledgement (ACK) information when the transmitter transmits the ACK information.

Abstract translation: 提供了一种检测由无线通信系统的接收机接收的指示符信息的方法，并且该方法包括：确定一个阈值，该阈值降低由从发射机发送的非连续传输（DTX）信息的虚警率引起的成本， DTX信息和错误检测率，决定从发射机发送的非DTX信息作为DTX信息; 以及使用所述阈值检测所述指示符信息。 当发送器发送ACK信息时，基于用于确认（ACK）信息的接收质量等级来确定阈值。

公开(公告)号：US20140369215A1

公开(公告)日：2014-12-18

申请号：US14282659

申请日：2014-05-20

Applicant: Samsung Electronics Co., Ltd.

Inventor： Soo-Bok YEO ,  Dong-Sik KIM ,  Heun-Chul LEE

IPC: H04W24/08

CPC classification number: H04B7/0669 ,  H04B7/0413 ,  H04L25/0328 ,  H04L2025/03426 ,  H04W24/08 ,  H04W48/16

Abstract: A method and an apparatus for measuring a link quality in a wireless communication are provided. The method of a receiver for measuring the link quality in the wireless communication system includes determining a modulation type for each of at least one reception stream received through at least one antenna based on a modulation order and channel information regarding each of signals transmitted from a plurality of transmission antennas, searching for a parameter corresponding to the determined modulation type from a pre-stored parameter table in which parameters for each modulation type are stored, and calculating a channel capacity for each of the at least one reception streams received through the at least one antenna by using the searched parameter.

Abstract translation: 提供了一种用于测量无线通信中的链路质量的方法和装置。 用于测量无线通信系统中的链路质量的接收机的方法包括：基于调制次序确定通过至少一个天线接收的至少一个接收流中的每一个的调制类型，以及关于从多个发送的每个信号的信道信息 的传输天线，从存储了每种调制类型的参数的预先存储的参数表中搜索与所确定的调制类型对应的参数，并且计算通过至少一个接收的至少一个接收流中的每一个的信道容量 一个天线通过使用搜索的参数。

公开(公告)号：US20160234761A1

公开(公告)日：2016-08-11

申请号：US14750413

申请日：2015-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dah-Hae CHONG ,  Ho-II KIM ,  Soo-Bok YEO ,  Min-Goo KIM ,  Chae-Hag YI

IPC: H04W48/16 ,  H04L25/02

CPC classification number: H04L25/024 ,  H04J11/0069 ,  H04L27/0014 ,  H04L2027/0026

Abstract: Methods and apparatuses are provided for performing a cell search by a receiver in a communication system. A scrambling code is identified by correlating a common pilot channel with a first synchronization accumulation length based on a frame boundary and a code group. A multipath signal is sought by correlating the common pilot channel with a second synchronization accumulation length based on the frame boundary and the code group. A difference between, or a ratio of, a first maximum value of first correlation values acquired during identification of the scrambling code and a second maximum value of second correlation values acquired during searching for the multipath signal, is determined. It is determined whether a frequency offset exists by comparing the difference or the ratio with a predetermined threshold value. The frequency offset is estimated and the frequency offset is transmitted to a demodulator, when the frequency offset exists.

Abstract translation: 提供了用于在通信系统中由接收机执行小区搜索的方法和装置。 通过基于帧边界和码组将公共导频信道与第一同步累加长度相关联来识别扰码。 通过基于帧边界和代码组将公共导频信道与第二同步累加长度相关联来寻求多径信号。 确定在识别扰码期间获取的第一相关值的第一最大值与在搜索多路径信号期间获取的第二相关值的第二最大值之间的差异或比率。 通过将差异或比率与预定阈值进行比较来确定是否存在频率偏移。 当频率偏移存在时，估计频率偏移并将频率偏移传输到解调器。

公开(公告)号：US20160065274A1

公开(公告)日：2016-03-03

申请号：US14733414

申请日：2015-06-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dong-Sik KIM ,  Soo-Bok YEO

IPC: H04B7/04 ,  H04L25/02 ,  H04L5/00 ,  H04B7/06

CPC classification number: H04B7/0413 ,  H04B7/0632 ,  H04B17/336 ,  H04L25/0202

Abstract: A method and an apparatus for measuring channel quality in a MIMO system is provided. The method includes measuring a first SINR based on an assumption that a first detector is used, using a channel estimation value of a reception signal with respect to each of a plurality of space layers, and a second SINR for each of the plurality of space layers corresponding to a case where the plurality of space layers exist independently using the channel estimation value of the reception signal; determining a Log Likelihood Ratio of reception data based on an assumption that a second detector is used, with respect to each of the plurality of space layers; and generating channel quality information based on an assumption that the second detector is used, based on the first SINR and the second SINR with respect to each of the plurality of space layers, and the LLR.

Abstract translation: 提供了一种用于测量MIMO系统中的信道质量的方法和装置。 该方法包括：使用相对于多个空间层中的每一个的接收信号的信道估计值，以及多个空间层中的每一个的第二SINR，基于使用第一检测器的假设来测量第一SINR 对应于使用接收信号的信道估计值独立存在多个空间层的情况; 基于使用第二检测器的假设，相对于所述多个空间层中的每一个确定接收数据的对数似然比; 以及基于相对于所述多个空间层中的每一个的所述第一SINR和所述第二SINR以及所述LLR，基于使用所述第二检测器的假设来生成信道质量信息。

公开(公告)号：US20150381390A1

公开(公告)日：2015-12-31

申请号：US14753650

申请日：2015-06-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Seok-Joong HEO ,  Soo-Bok YEO ,  Jin-Hyun SO

IPC: H04L25/02 ,  H04W24/10 ,  H04W72/12 ,  H04B7/01 ,  H04B1/12

CPC classification number: H04L25/0226 ,  H04B7/01 ,  H04L25/0232 ,  H04L25/025 ,  H04L2025/03605

Abstract: A terminal including a transmitter and a receiver is provided. The receiver includes a pilot detection unit configured to detect a pilot signal from a received signal; a low-pass filter configured to filter noise from the pilot signal; a channel equalizer configured to perform channel equalization for data of the received signal, based on the filtered pilot signal; and a channel estimation controller configured to adaptively adjust at least one of a coefficient and an order of the low-pass filter, wherein the coefficient of the low-pass filter is controlled according to characteristics of the pilot signal, and the order of the low-pass filter is controlled according to transmission characteristics of the data of the received signal.

Abstract translation: 提供包括发射机和接收机的终端。 接收机包括：导频检测单元，被配置为从接收信号中检测导频信号; 低通滤波器，被配置为滤除来自导频信号的噪声; 信道均衡器，被配置为基于经滤波的导频信号对接收信号的数据执行信道均衡; 以及信道估计控制器，被配置为自适应地调整所述低通滤波器的系数和阶数中的至少一个，其中根据所述导频信号的特性来控制所述低通滤波器的系数，并且所述低通滤波器的顺序 通过滤波器根据接收信号的数据的传输特性进行控制。