公开(公告)号：US08699605B2

公开(公告)日：2014-04-15

申请号：US12856005

申请日：2010-08-13

Applicant: Joo-Yeol Yang

Inventor： Joo-Yeol Yang

IPC: H04B7/02 ,  H04L1/02

CPC classification number: H04B7/0854

Abstract: A receiving method and apparatus in a Multiple-Input Multiple-Output (MIMO) communication system are provided. The method includes receiving reception signals through a plurality of reception antennas, grouping symbols corresponding to the reception signals, respectively, into a preset number of groups, and rearranging symbols of the respective groups, transforming the reception signals by applying QR decomposition to the reception signals, sequentially canceling interference due to each of total possible candidate symbols for a first symbol based on an order of the rearranged symbols in the transformed reception signals, determining a portion of the total possible candidate symbols to be a candidate symbol set for each remaining symbol, except for the first symbol, using the interference-canceled reception signal, and determining log-likelihood ratio values of the first symbol, which are to be used upon decoding the received signals, using candidate symbols for the first symbol and each remaining symbol.

Abstract translation: 提供了一种多输入多输出（MIMO）通信系统中的接收方法和装置。 该方法包括：通过多个接收天线接收接收信号，分别对应于接收信号的符号分组成预定数量的组，并重新排列各组的符号，通过对接收信号应用QR分解来变换接收信号 根据经变换的接收信号中的重新排列的符号的顺序，顺序地消除由于第一符号的总可能候选符号中的每一个引起的干扰，将总可能候选符号的一部分确定为每个剩余符号的候选符号集， 除了第一符号，使用干扰消除的接收信号，并且使用用于第一符号和每个剩余符号的候选符号来确定在解码接收信号时要使用的第一符号的对数似然比值。

公开(公告)号：US08379781B2

公开(公告)日：2013-02-19

申请号：US12313884

申请日：2008-11-25

Applicant: Joo-Yeol Yang ,  Sung-Soo Kim

Inventor： Joo-Yeol Yang ,  Sung-Soo Kim

IPC: H04B14/06

CPC classification number: H04L25/0202 ,  H04L1/0036 ,  H04L1/0631 ,  H04L1/0668 ,  H04L25/0222

Abstract: An apparatus for adaptively decoding based on a channel variation at a receiver of a communication system supporting an Alamouti mode is provided. The apparatus includes a channel variation estimator for estimating the channel variation; a channel estimator for estimating a channel value of successive channel periods or a channel value of each channel period by comparing the estimated channel variation with a threshold; an Alamouti decoder for decoding a receive signal using an Alamouti method when the estimated channel variation is less than or equal to the threshold; and a Spatial Multiplexing (SM) decoder for decoding the receive signal using an SM method having a square channel matrix when the estimated channel variation is greater than the threshold.

公开(公告)号：US20110163906A1

公开(公告)日：2011-07-07

申请号：US12984325

申请日：2011-01-04

Applicant: Joo Yeol YANG ,  Jae Eun Lee ,  Kyeong Jin Song ,  Seong Hee Jeong ,  Seung Un Choi ,  Hyung Suk Ham

Inventor： Joo Yeol YANG ,  Jae Eun Lee ,  Kyeong Jin Song ,  Seong Hee Jeong ,  Seung Un Choi ,  Hyung Suk Ham

IPC: G01S13/04 ,  G01S13/00

CPC classification number: G01S7/03 ,  G01S3/74 ,  G01S13/422 ,  G01S13/931 ,  H01Q1/3233 ,  H01Q1/3283 ,  H01Q21/0006 ,  H01Q21/061

Abstract: A radar apparatus, an antenna apparatus, and a data acquisition method are provided, which can reduce the size of a radar apparatus as well as maintaining angular resolution.

Abstract translation: 提供了雷达装置，天线装置和数据采集方法，其可以减小雷达装置的尺寸以及维持角度分辨率。

公开(公告)号：US20090323843A1

公开(公告)日：2009-12-31

申请号：US12493904

申请日：2009-06-29

Applicant: Joo Yeol Yang ,  Hee Jin Roh

Inventor： Joo Yeol Yang ,  Hee Jin Roh

IPC: H04J11/00 ,  H04L27/28

CPC classification number: H04L27/2662 ,  H04L27/2672 ,  H04L27/2675

Abstract: A method and an apparatus for estimating a symbol timing offset in an Orthogonal Frequency Division Multiplexing (OFDM) based communication system are provided. A Carrier to Interference Ratio (CIR) of an Reference Signal (RS) is acquired using received pilot signals. The RS CIR includes power information on channel components of the RS. A CIR of a Secondary Synchronization Channel (S-SCH) is acquired using the received pilot signals. The S-SCH CIR includes power information on channel components of the S-SCH. Unnecessary channel components are suppressed from the RS CIR using the S-SCH CIR. Real channel components of the RS remain. An observation window is set having a predetermined duration for windowing the real channel components of the RS. A first arriving channel component is searched for within the observation window. A start point of data is estimated using the first arriving channel component.

Abstract translation: 提供了一种用于估计基于正交频分复用（OFDM）的通信系统中的符号定时偏移的方法和装置。 使用接收到的导频信号来获取参考信号（RS）的载波干扰比（CIR）。 RS CIR包括关于RS的信道分量的功率信息。 使用接收到的导频信号来获取辅同步信道（S-SCH）的CIR。 S-SCH CIR包括关于S-SCH的信道分量的功率信息。 使用S-SCH CIR从RS CIR抑制不必要的信道分量。 RS的实际通道组件保持不变。 设置具有预定持续时间的观察窗，用于对RS的真实信道分量进行加窗。 在观察窗口内搜索第一个到达的信道分量。 使用第一到达信道分量来估计数据的起始点。

公开(公告)号：US20090141835A1

公开(公告)日：2009-06-04

申请号：US12315322

申请日：2008-12-02

Applicant: Joo-Yeol Yang ,  Sung-Soo Kim

Inventor： Joo-Yeol Yang ,  Sung-Soo Kim

IPC: H04B1/10 ,  H04L27/06

CPC classification number: H04L25/03178 ,  H04B7/0854 ,  H04L25/03318 ,  H04L25/061 ,  H04L27/38

Abstract: Detection apparatus and method for achieving performance close to a Maximum Likelihood (ML) detection having optimal performance and reducing computational complexity in a Multiple-Input Multiple-Output (MIMO) system including a plurality of transmit antennas and receive antennas are provided. The apparatus includes a hard decision part for confirming an initial hard decision value of a receive symbol vector; a candidate symbol selector for selecting candidate symbols restricted to neighbor values of the initial hard decision value; and an interference canceller for canceling interference in the selected candidate symbols and selecting a final candidate symbol from the received symbols using a result of the interference cancellation.

Abstract translation: 提供了一种用于在包括多个发射天线和接收天线的多输入多输出（MIMO）系统中实现接近具有最佳性能并降低计算复杂度的最大似然（ML）检测性能的检测装置和方法。 该装置包括用于确认接收符号向量的初始硬判决值的硬判决部分; 候选符号选择器，用于选择限于初始硬判决值的邻近值的候选符号; 以及干扰消除器，用于消除所选择的候选符号中的干扰，并使用干扰消除的结果从所接收的符号中选择最终候选符号。

公开(公告)号：US20110051861A1

公开(公告)日：2011-03-03

申请号：US12856005

申请日：2010-08-13

Applicant: Joo-Yeol YANG

Inventor： Joo-Yeol YANG

IPC: H04L27/06

CPC classification number: H04B7/0854

Abstract: A receiving method and apparatus in a Multiple-Input Multiple-Output (MIMO) communication system are provided. The method includes receiving reception signals through a plurality of reception antennas, grouping symbols corresponding to the reception signals, respectively, into a preset number of groups, and rearranging symbols of the respective groups, transforming the reception signals by applying QR decomposition to the reception signals, sequentially canceling interference due to each of total possible candidate symbols for a first symbol based on an order of the rearranged symbols in the transformed reception signals, determining a portion of the total possible candidate symbols to be a candidate symbol set for each remaining symbol, except for the first symbol, using the interference-canceled reception signal, and determining log-likelihood ratio values of the first symbol, which are to be used upon decoding the received signals, using candidate symbols for the first symbol and each remaining symbol.

Abstract translation: 提供了一种多输入多输出（MIMO）通信系统中的接收方法和装置。 该方法包括：通过多个接收天线接收接收信号，分别对应于接收信号的符号分组成预定数量的组，并重新排列各组的符号，通过对接收信号应用QR分解来变换接收信号 根据经变换的接收信号中的重新排列的符号的顺序，顺序地消除由于第一符号的总可能候选符号中的每一个引起的干扰，将总可能候选符号的一部分确定为每个剩余符号的候选符号集， 除了第一符号，使用干扰消除的接收信号，并且使用用于第一符号和每个剩余符号的候选符号来确定在解码接收信号时要使用的第一符号的对数似然比值。

公开(公告)号：US07433413B2

公开(公告)日：2008-10-07

申请号：US11020532

申请日：2004-12-23

Applicant: Kyung-Whoon Cheun ,  Joo-Yeol Yang ,  Jong-Hyeuk Lee

Inventor： Kyung-Whoon Cheun ,  Joo-Yeol Yang ,  Jong-Hyeuk Lee

IPC: H04K1/10

CPC classification number: H04L27/2628 ,  H04L1/0618 ,  H04L27/2605

Abstract: An apparatus and method for transmitting data on a plurality of frequency sub-channels for a plurality of successive symbol periods through a plurality of transmit antennas in an OFDM system. In the data transmitting apparatus, an S/P converter converts information symbols received from a data source to an information symbol vector, a coder generates at least one code symbol vector using the information symbol vector in at least one symbol period, an IFFT unit generates at least as many transmission signal vectors as twice the number of code symbol vectors generated in the coder for the one symbol period, a plurality of P/S converters each convert the transmission signal vectors to a transmission signal stream, and a guard interval inserter inserts a guard interval into each of the transmission signal streams received from the P/S converters.

Abstract translation: 一种用于在OFDM系统中通过多个发射天线在多个连续符号周期的多个频率子信道上发送数据的装置和方法。 在数据发送装置中，S / P转换器将从数据源接收的信息符号转换为信息符号向量，编码器在至少一个符号周期内使用信息符号向量生成至少一个码元矢量，IFFT单元生成 至少与在一个符号周期中在编码器中生成的码符号向量数量的两倍的传输信号向量，多个P / S转换器各自将传输信号向量转换为传输信号流，并且保护间隔插入器插入 对从P / S转换器接收的每个发送信号流的保护间隔。

公开(公告)号：US20050141414A1

公开(公告)日：2005-06-30

申请号：US11020532

申请日：2004-12-23

Applicant: Kyung-Whoon Cheun ,  Joo-Yeol Yang ,  Jong-Hyeuk Lee

Inventor： Kyung-Whoon Cheun ,  Joo-Yeol Yang ,  Jong-Hyeuk Lee

IPC: H04J11/00 ,  H04B7/06 ,  H04L1/06 ,  H04L27/26

CPC classification number: H04L27/2628 ,  H04L1/0618 ,  H04L27/2605

Abstract: An apparatus and method for transmitting data on a plurality of frequency sub-channels for a plurality of successive symbol periods through a plurality of transmit antennas in an OFDM system. In the data transmitting apparatus, an S/P converter converts information symbols received from a data source to an information symbol vector, a coder generates at least one code symbol vector using the information symbol vector in at least one symbol period, an IFFT unit generates at least as many transmission signal vectors as twice the number of code symbol vectors generated in the coder for the one symbol period, a plurality of P/S converters each convert the transmission signal vectors to a transmission signal stream, and a guard interval inserter inserts a guard interval into each of the transmission signal streams received from the P/S converters.

Abstract translation: 一种用于在OFDM系统中通过多个发射天线在多个连续符号周期的多个频率子信道上发送数据的装置和方法。 在数据发送装置中，S / P转换器将从数据源接收的信息符号转换为信息符号向量，编码器在至少一个符号周期内使用信息符号向量生成至少一个码元矢量，IFFT单元生成 至少与在一个符号周期中在编码器中生成的码符号向量数量的两倍的传输信号向量，多个P / S转换器各自将传输信号向量转换为传输信号流，并且保护间隔插入器插入 对从P / S转换器接收的每个发送信号流的保护间隔。

公开(公告)号：US08243777B2

公开(公告)日：2012-08-14

申请号：US12493904

申请日：2009-06-29

Applicant: Joo Yeol Yang ,  Hee Jin Roh

Inventor： Joo Yeol Yang ,  Hee Jin Roh

IPC: H04B1/00

CPC classification number: H04L27/2662 ,  H04L27/2672 ,  H04L27/2675

Abstract: A method and an apparatus for estimating a symbol timing offset in an Orthogonal Frequency Division Multiplexing (OFDM) based communication system are provided. A Carrier to Interference Ratio (CIR) of an Reference Signal (RS) is acquired using received pilot signals. The RS CIR includes power information on channel components of the RS. A CIR of a Secondary Synchronization Channel (S-SCH) is acquired using the received pilot signals. The S-SCH CIR includes power information on channel components of the S-SCH. Unnecessary channel components are suppressed from the RS CIR using the S-SCH CIR. Real channel components of the RS remain. An observation window is set having a predetermined duration for windowing the real channel components of the RS. A first arriving channel component is searched for within the observation window. A start point of data is estimated using the first arriving channel component.

Abstract translation: 提供了一种用于估计基于正交频分复用（OFDM）的通信系统中的符号定时偏移的方法和装置。 使用接收到的导频信号来获取参考信号（RS）的载波干扰比（CIR）。 RS CIR包括关于RS的信道分量的功率信息。 使用接收到的导频信号来获取辅同步信道（S-SCH）的CIR。 S-SCH CIR包括关于S-SCH的信道分量的功率信息。 使用S-SCH CIR从RS CIR抑制不必要的信道分量。 RS的实际通道组件保持不变。 设置具有预定持续时间的观察窗，用于对RS的真实信道分量进行加窗。 在观察窗口内搜索第一个到达的信道分量。 使用第一到达信道分量来估计数据的起始点。

公开(公告)号：US20090135963A1

公开(公告)日：2009-05-28

申请号：US12313884

申请日：2008-11-25

Applicant: Joo-Yeol Yang ,  Sung-Soo Kim

Inventor： Joo-Yeol Yang ,  Sung-Soo Kim

IPC: H04L27/06

CPC classification number: H04L25/0202 ,  H04L1/0036 ,  H04L1/0631 ,  H04L1/0668 ,  H04L25/0222

Abstract: An apparatus for adaptively decoding based on a channel variation at a receiver of a communication system supporting an Alamouti mode is provided. The apparatus includes a channel variation estimator for estimating the channel variation; a channel estimator for estimating a channel value of successive channel periods or a channel value of each channel period by comparing the estimated channel variation with a threshold; an Alamouti decoder for decoding a receive signal using an Alamouti method when the estimated channel variation is less than or equal to the threshold; and a Spatial Multiplexing (SM) decoder for decoding the receive signal using an SM method having a square channel matrix when the estimated channel variation is greater than the threshold.

Abstract translation: 提供了一种基于在支持Alamouti模式的通信系统的接收机处的信道变化进行自适应解码的装置。 该装置包括用于估计信道变化的信道变化估计器; 信道估计器，用于通过将估计的信道变化与阈值进行比较来估计连续信道周期的信道值或每个信道周期的信道值; Alamouti解码器，当所估计的信道变化小于或等于阈值时，使用Alamouti方法对接收信号进行解码; 以及空间复用（SM）解码器，用于当所估计的信道变化大于阈值时，使用具有平方信道矩阵的SM方法对接收信号进行解码。