公开(公告)号：US20090147894A1

公开(公告)日：2009-06-11

申请号：US12127342

申请日：2008-05-27

申请人： Young Jo BANG ,  Chang Wahn YU ,  Seung Jae BAHNG ,  Dae Ho KIM ,  Youn Ok PARK ,  Jee Hwan AHN ,  Il Min KIM

发明人： Young Jo BANG ,  Chang Wahn YU ,  Seung Jae BAHNG ,  Dae Ho KIM ,  Youn Ok PARK ,  Jee Hwan AHN ,  Il Min KIM

IPC分类号： H04B1/10

CPC分类号： H04B7/0413 ,  H04B7/0854

摘要： The present invention relates to a transmission symbol detection method in a multiple antenna system. In the present invention, when a channel matrix is estimated through channel estimation, a receiving side calculates a Q matrix and an R matrix through QR decomposition that is more simplified than a typical QR decomposition from an augmented channel matrix that includes the estimated channel matrix. In addition, the receiving side detects symbols having the minimum Euclidean metric by using the two matrixes, as transmission symbols.

摘要翻译： 本发明涉及多天线系统中的发射符号检测方法。 在本发明中，当通过信道估计来估计信道矩阵时，接收侧通过QR分解来计算Q矩阵和R矩阵，其比来自包括估计信道矩阵的增强信道矩阵的典型QR分解更简化。 此外，接收端通过使用两个矩阵来检测具有最小欧几里德量度的符号作为发送符号。

公开(公告)号：US20100135438A1

公开(公告)日：2010-06-03

申请号：US12627506

申请日：2009-11-30

申请人： Young Jo BANG ,  Hyeong Sook PARK ,  Jun-Woo KIM ,  Kyung Yeol SOHN ,  Chang Wahn YU ,  Youn Ok PARK ,  Jee Hwan AHN ,  Il Min KIM

发明人： Young Jo BANG ,  Hyeong Sook PARK ,  Jun-Woo KIM ,  Kyung Yeol SOHN ,  Chang Wahn YU ,  Youn Ok PARK ,  Jee Hwan AHN ,  Il Min KIM

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H04B7/0413

摘要： Disclosed is a method of detecting signals at a receiver of a communication system with a multiple input multiple output antenna. With the signal detection method, a square of the distance between a received signal vector and a channel status-considered transmission symbol vector is calculated first, and the square of the distance is then classified into first and second components. The first component is minimized to calculate a plurality of first soft symbol estimates. A solution set of the first component is calculated on the basis of the plurality of first soft symbol estimates. The second component is minimized to calculate a plurality of second soft symbol estimates. A solution set of the second component is calculated on the basis of the plurality of second soft symbol estimates. A final solution set is calculated by doing the sum of the first component solution set and the second component solution.

摘要翻译： 公开了一种在具有多输入多输出天线的通信系统的接收机处检测信号的方法。 利用信号检测方法，首先计算接收信号矢量和通道状态考虑的发送符号向量之间的距离的平方，然后将距离的平方分成第一和第二分量。 将第一分量最小化以计算多个第一软符号估计。 基于多个第一软符号估计来计算第一分量的解集合。 将第二分量最小化以计算多个第二软符号估计。 基于多个第二软符号估计来计算第二分量的解集合。 通过执行第一分量解集合和第二分量解的和来计算最终解集。

公开(公告)号：US20090052593A1

公开(公告)日：2009-02-26

申请号：US12142600

申请日：2008-06-19

申请人： Seung Jae BAHNG ,  Chang Wahn YU ,  Young Jo BANG ,  Dae Ho KIM ,  Young Ha LEE ,  Youn Ok PARK

发明人： Seung Jae BAHNG ,  Chang Wahn YU ,  Young Jo BANG ,  Dae Ho KIM ,  Young Ha LEE ,  Youn Ok PARK

IPC分类号： H04L27/06

CPC分类号： H04L25/03318 ,  H04L25/0204 ,  H04L25/0246 ,  H04L25/067

摘要： The present invention relates to a log-likelihood ratio calculation method, a transmitting signal detection method, and a receiver. The present invention estimates a channel on the basis of the received signal and rearranges a plurality of layers. Further, at the time of rearrangement of the layers, a symbol of a layer having the lowest reliability is considered for every constellation dot, and the successive interference for the remaining layers is removed corresponding to the constellation dots of the layer having the lowest reliability to set the transmitting symbol candidate vector. Furthermore, a log-likelihood ratio for every bit of the plurality of layers is calculated using the transmitting symbol candidate vector to decode the channel.

摘要翻译： 本发明涉及对数似然比计算方法，发送信号检测方法和接收机。 本发明基于接收到的信号来估计信道并重排多个层。 此外，在层的重排时，对于每个星座点考虑具有最低可靠性的层的符号，并且对应于具有最低可靠性的层的星座点去除对剩余层的连续干扰， 设置发送符号候选向量。 此外，使用发送符号候选向量计算多个层中的每一比特的对数似然比，以解码该信道。

公开(公告)号：US20090135947A1

公开(公告)日：2009-05-28

申请号：US12141539

申请日：2008-06-18

申请人： Seung Jae BAHNG ,  Jae Kwon KIM ,  Hoon HEO ,  Hyun Myung WU ,  Youn Ok PARK ,  Young Jo BANG ,  Hyeong Sook PARK ,  Hoon LEE ,  Young Ha LEE ,  Jung Pil CHOI

发明人： Seung Jae BAHNG ,  Jae Kwon KIM ,  Hoon HEO ,  Hyun Myung WU ,  Youn Ok PARK ,  Young Jo BANG ,  Hyeong Sook PARK ,  Hoon LEE ,  Young Ha LEE ,  Jung Pil CHOI

IPC分类号： H04L27/00

CPC分类号： H04L25/067 ,  H04L25/03203 ,  H04L2025/03426

摘要： The present invention relates to a method of detecting a candidate vector and a method of detecting a transmission symbol using the same. According to an embodiment of the present invention, in a multiple input multiple output (MIMO) system using spatial multiplexing (SM), a receiver selects candidate vectors corresponding to a layer located at a last row among a plurality of rearranged layers, and sequentially ranks constellation dots of a next layer for each of the selected candidate vectors. Then, a plurality of arbitrary constellation dots are selected from the ranked constellation dots, accumulated costs of the arbitrary constellation dots are calculated, and a candidate vector is selected in correspondence with a constellation dot having a minimal accumulated cost. Then, a new arbitrary constellation dot is selected in place of the constellation dot selected as the candidate vector, an accumulated cost of the selected arbitrary constellation dot is compared with accumulated costs of the other arbitrary constellation dots, and another candidate vector is selected.

摘要翻译： 本发明涉及检测候选向量的方法和使用其的发送符号的检测方法。 根据本发明的实施例，在使用空间复用（SM）的多输入多输出（MIMO）系统中，接收机选择与多个重排层中位于最后一行的层相对应的候选向量，并且顺次排列 每个所选候选向量的下一层的星座点。 然后，从分级星座点中选择多个任意星座点，计算任意星座点的累积成本，并且与具有最小累积成本的星座点对应地选择候选矢量。 然后，代替选择为候选矢量的星座点，选择新的任意星座点，将所选择的任意星座点的累积成本与其他任意星座点的累积成本进行比较，并选择另一候选矢量。

公开(公告)号：US20180279245A1

公开(公告)日：2018-09-27

申请号：US12906496

申请日：2010-10-18

申请人： Chang Wahn YU ,  Youn Ok PARK ,  Chong Hyun LEE ,  Jun-Woo KIM ,  Seungjae BAHNG ,  Byung-Han RYU ,  Jung Pil CHOI ,  Young Jo BANG

发明人： Chang Wahn YU ,  Youn Ok PARK ,  Chong Hyun LEE ,  Jun-Woo KIM ,  Seungjae BAHNG ,  Byung-Han RYU ,  Jung Pil CHOI ,  Young Jo BANG

IPC分类号： H04W56/00

CPC分类号： H04W56/004 ,  H04W56/0055

摘要： An apparatus and method for detecting synchronization and signals using block data processing in a receiving system are provided. To process an input signal, a cumulative matrix is obtained from an input vector signal for each frame generated from the signal. A primary eigenvector is extracted from the cumulative matrix, and the maximum value of a correlation vector is calculated from the extracted primary eigenvector. A time delay is detected by comparing the calculated maximum value of the correlation vector with a first threshold value, and a delay correlation vector is calculated from the detected time delay. Finally, synchronization and signals are detected by comparing the calculated delay correlation vector with a second threshold value.

公开(公告)号：US20100142654A1

公开(公告)日：2010-06-10

申请号：US12629433

申请日：2009-12-02

申请人： Young Jo BANG ,  Young Ha LEE ,  Jung Pil CHOI ,  Hoon LEE ,  Seungjae BAHNG ,  Youn Ok PARK ,  Il Min KIM

发明人： Young Jo BANG ,  Young Ha LEE ,  Jung Pil CHOI ,  Hoon LEE ,  Seungjae BAHNG ,  Youn Ok PARK ,  Il Min KIM

IPC分类号： H04L27/06

CPC分类号： H04L25/0321 ,  H04L27/34 ,  H04L2025/03426

摘要： In a multi-input multi-output communication system receiving signals transmitted through a plurality of transmission antennas by using a plurality of reception antennas, a matrix determining a position of a symbol to be detected from a received signal is calculated at a first symbol detection step, and from the subsequent step, a matrix at the current step is acquired through a simple relationship from the matrix calculated at the previous step to determine a position of a symbol to be detected.

摘要翻译： 在通过使用多个接收天线接收通过多个发送天线发送的信号的多输入多输出通信系统中，在第一符号检测步骤中计算从接收信号确定要检测的符号的位置的矩阵 ，并且从后续步骤，通过从在前一步骤计算的矩阵的简单关系获取当前步骤中的矩阵，以确定要检测的符号的位置。

公开(公告)号：US20090147887A1

公开(公告)日：2009-06-11

申请号：US12141673

申请日：2008-06-18

申请人： Seung Jae BAHNG ,  Jung Pil CHOI ,  Youn Ok PARK

发明人： Seung Jae BAHNG ,  Jung Pil CHOI ,  Youn Ok PARK

IPC分类号： H04L27/06

CPC分类号： H04L25/067 ,  H04L25/03006 ,  H04L2025/03426

摘要： The present invention relates to a method of calculating a soft value and a method of detecting a transmission signal. The present invention estimates a channel on the basis of a received signal and rearranges a plurality of data streams. Further, a plurality of substitute vectors are selected from the rearranged data streams and a metric corresponding to each of the substitute vector is calculated. Further, a threshold value is calculated from a metric calculated for each of the substitute vectors and a soft value of each bit of a transmission signal is calculated from the metric and threshold value corresponding to each of the substitute vectors.

摘要翻译： 本发明涉及计算软值的方法和检测发送信号的方法。 本发明基于接收到的信号估计信道并重新排列多个数据流。 此外，从重新布置的数据流中选择多个替代矢量，并且计算与每个替代矢量对应的度量。 此外，根据针对每个替代矢量计算的度量来计算阈值，并且从与每个替代矢量对应的度量和阈值计算发送信号的每个比特的软值。

公开(公告)号：US20090154540A1

公开(公告)日：2009-06-18

申请号：US12212433

申请日：2008-09-17

申请人： Chang Wahn YU ,  Kyung-Yeol SOHN ,  Hyuk Jun OH ,  Youn Ok PARK

发明人： Chang Wahn YU ,  Kyung-Yeol SOHN ,  Hyuk Jun OH ,  Youn Ok PARK

IPC分类号： H04B3/46

CPC分类号： H04L25/0244 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/0228

摘要： The present invention relates to a method and apparatus for estimating a channel in a mobile communication network. In particular, the present invention relates to a method of estimating a channel under a channel environment where interference between neighboring base stations exists in a mobile communication network using an orthogonal frequency division multiplexing (OFDM) method. In order to estimate a channel, one cluster is divided into two sub-clusters, and pilot sub-carrier signals included in at least one sub-cluster in an OFDM symbol direction are used. Therefore, it is possible to further improve performance as compared to a method of estimating a channel by using pilot sub-carriers included in one cluster.

摘要翻译： 本发明涉及一种用于估计移动通信网络中的信道的方法和装置。 具体地说，本发明涉及一种使用正交频分复用（OFDM）方法估计在移动通信网络中存在相邻基站之间的干扰的信道环境下的信道的方法。 为了估计信道，一个簇被划分成两个子簇，并且使用包括在OFDM符号方向上的至少一个子簇中的导频子载波信号。 因此，与通过使用包括在一个簇中的导频子载波来估计信道的方法相比，可以进一步提高性能。

公开(公告)号：US20090147892A1

公开(公告)日：2009-06-11

申请号：US12204464

申请日：2008-09-04

申请人： Hoon LEE ,  Chang Wahn YU ,  Youn Ok PARK

发明人： Hoon LEE ,  Chang Wahn YU ,  Youn Ok PARK

IPC分类号： H04B1/10

CPC分类号： H04L25/03159 ,  H04L27/2647

摘要： An apparatus for canceling interference includes a plurality of converters, a plurality of interference cancellation units, a plurality of variance detectors, and an output selecting unit. The plurality of converters converts a plurality of received signals to a plurality of frequency domain signals, respectively. The plurality of interference cancellation units cancel interference in the plurality of frequency domain signals using a plurality of interference cancellation schemes to generate a plurality of interference-canceled signals corresponding to the plurality of interference cancellation schemes, respectively. The plurality of variance detectors measure a plurality of amounts of residual interference corresponding to the plurality of interference-canceled signals, respectively. The output selecting unit selects a single interference-canceled signal with the least amount of residual interference from the plurality of interference-canceled signals, based on the plurality of amounts of residual interference.

摘要翻译： 用于消除干扰的装置包括多个转换器，多个干扰消除单元，多个方差检测器和输出选择单元。 多个转换器将多个接收信号分别转换成多个频域信号。 多个干扰消除单元使用多个干扰消除方案来消除多个频域信号中的干扰，以分别产生与多个干扰消除方案对应的多个干扰消除信号。 多个方差检测器分别测量与多个干扰消除信号相对应的多个残余干扰量。 输出选择单元基于多个残留干扰量从多个干扰消除信号中选择具有最小残留干扰量的单个干扰消除信号。

公开(公告)号：US20100142661A1

公开(公告)日：2010-06-10

申请号：US12510120

申请日：2009-07-27

申请人： Hoon LEE ,  Young Jo BANG ,  Seungjae BAHNG ,  Youn Ok PARK

发明人： Hoon LEE ,  Young Jo BANG ,  Seungjae BAHNG ,  Youn Ok PARK

IPC分类号： H04B1/06 ,  H04L27/08

CPC分类号： H03G3/3052

摘要： The present invention relates to a device for gain control and a method for receiving a signal. The device for gain control according to the present invention includes a map interpreter that detects beamforming symbol periods in wireless signals, a power calculator that calculate the average power of the beamforming symbol periods in response to outputs of the map interpreter, a gain calculator that calculates gain control signals on the basis of the output signals of the power calculator, and a switch that outputs gains from the gain control signals, in which the wireless signals are corrected on the basis of the gains.

摘要翻译： 本发明涉及一种用于增益控制的装置和一种接收信号的方法。 根据本发明的用于增益控制的装置包括：地图解释器，其检测无线信号中的波束成形符号周期;功率计算器，其响应于地图解释器的输出计算波束成形符号周期的平均功率;计算增益计算器 基于功率计算器的输出信号的增益控制信号和从增益控制信号输出增益的开关，其中基于增益来校正无线信号。