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1. 发明授权

US08654905B2 Method and apparatus for canceling interference 有权
标题翻译：消除干扰的方法和装置
公开(公告)号：US08654905B2
公开(公告)日：2014-02-18
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。

2. 发明授权

US08040980B2 Log likelihood ratio calculation method, transmit signal detection method, and receiver 有权
标题翻译：对数似然比计算方法，发射信号检测方法和接收机
公开(公告)号：US08040980B2
公开(公告)日：2011-10-18
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 , H03K9/00 , H04L27/00
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。

3. 发明申请

US20090135964A1 METHOD OF CALCULATING LOG-LIKELIHOOD RATIO AND METHOD OF DETECTING TRANSMISSION SIGNAL 有权
标题翻译：计算日志比例的方法和检测传输信号的方法
公开(公告)号：US20090135964A1
公开(公告)日：2009-05-28
申请号：US12141382
申请日：2008-06-18
申请人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
发明人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
IPC分类号： H03D1/00
CPC分类号： H04L1/0054
摘要： The present invention relates to a method of calculating a log-likelihood ratio and a method of detecting a transmission signal. According to the present invention, when a transmission symbol candidate vector is detected on the basis of a received signal, a threshold value and an ML metric of each transmission symbol candidate vector are calculated and the ML metric that is larger than the threshold value is updated by the threshold value. Further, a log-likelihood ratio of the transmission signal bit is calculated using the updated ML metric and the threshold value, and a transmission signal is detected using the log-likelihood ratio.
摘要翻译：本发明涉及计算对数似然比的方法和检测发送信号的方法。根据本发明，当基于接收信号检测到发送符号候选向量时，计算每个发送符号候选向量的阈值和ML度量，并且更新大于阈值的ML度量通过阈值。此外，使用更新的ML度量和阈值来计算发送信号比特的对数似然比，并且使用对数似然比来检测发送信号。

4. 发明授权

US08559566B2 Method and apparatus for decomposing received symbol signal modulated with bit reflected gray code in bit information 有权
标题翻译：用于在位信息中分解用位反射灰度码调制的接收符号信号的方法和装置
公开(公告)号：US08559566B2
公开(公告)日：2013-10-15
申请号：US12734984
申请日：2008-09-01
申请人： Chang Wahn Yu , Dong Weon Yoon , Kwang Min Hyun , Youn Ok Park , Dae Ho Kim , Jun-Woo Kim , Hyeong Sook Park , Seung Jae Bahng , Young Jo Bang , Kyung Yeol Sohn
发明人： Chang Wahn Yu , Dong Weon Yoon , Kwang Min Hyun , Youn Ok Park , Dae Ho Kim , Jun-Woo Kim , Hyeong Sook Park , Seung Jae Bahng , Young Jo Bang , Kyung Yeol Sohn
IPC分类号： H04L27/06
CPC分类号： H04L25/067 , H04L1/005
摘要： Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.
摘要翻译：公开了一种用于将被反映格雷码的位进行调制的接收符号信号组合成比特信息的方法和装置。根据本发明的实施例，根据Gray映射规则分配具有位的接收符号信号的正整数，并且确定符号。计算表示构成接收符号信号的位的排列的值。获取由构成接收到的符号信号的比特组构成的至少一个比特组中的边界值，并且计算与接收到的符号信号的绝对值的差值。基于正整数和确定的符号，指示比特排列的值以及与绝对值的差，使用接收到的符号信号的值将接收的符号信号转换为每位的信息。因此，可以降低在接收机中不可避免地使用的迭代解码器的逐位分解的复杂度。

5. 发明授权

US08135099B2 Method for detecting transmission symbols in multiple antenna system 有权
标题翻译：用于检测多天线系统中发射符号的方法
公开(公告)号：US08135099B2
公开(公告)日：2012-03-13
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。

6. 发明授权

US08379691B2 Method and apparatus for estimating channel in mobile communication network 有权
标题翻译：用于估计移动通信网络中信道的方法和装置
公开(公告)号：US08379691B2
公开(公告)日：2013-02-19
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： H04B1/00 , H04L27/28 , H04J11/00
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。

7. 发明授权

US08036322B2 Method of calculating log-likelihood ratio and method of detecting transmission signal 有权
标题翻译：计算对数似然比的方法和检测传输信号的方法
公开(公告)号：US08036322B2
公开(公告)日：2011-10-11
申请号：US12141382
申请日：2008-06-18
申请人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn-Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
发明人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn-Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
IPC分类号： H04L27/06
CPC分类号： H04L1/0054
摘要： The present invention relates to a method of calculating a log-likelihood ratio and a method of detecting a transmission signal. According to the present invention, when a transmission symbol candidate vector is detected on the basis of a received signal, a threshold value and an ML metric of each transmission symbol candidate vector are calculated and the ML metric that is larger than the threshold value is updated by the threshold value. Further, a log-likelihood ratio of the transmission signal bit is calculated using the updated ML metric and the threshold value, and a transmission signal is detected using the log-likelihood ratio.
摘要翻译：本发明涉及计算对数似然比的方法和检测发送信号的方法。根据本发明，当基于接收信号检测到发送符号候选向量时，计算每个发送符号候选向量的阈值和ML度量，并且更新大于阈值的ML度量通过阈值。此外，使用更新的ML度量和阈值来计算发送信号比特的对数似然比，并且使用对数似然比来检测发送信号。

8. 发明授权

US10321426B2 Apparatus and method for detecting synchronization and signals using block data processing 有权
公开(公告)号：US10321426B2
公开(公告)日：2019-06-11
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： H04J3/06 , H04W56/00
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.

9. 发明授权

US08160174B2 Signal detection method and receiver 有权
标题翻译：信号检测方法和接收机
公开(公告)号：US08160174B2
公开(公告)日：2012-04-17
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： H04B7/02 , H04L5/12 , 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。

10. 发明授权

US08693572B2 Method for transmitting signal of orthogonal frequency division multiplexing type, and apparatus applied to the same 失效
标题翻译：用于发送正交频分复用类型信号的方法及应用于其的装置
公开(公告)号：US08693572B2
公开(公告)日：2014-04-08
申请号：US13545691
申请日：2012-07-10
申请人： Gweon Do Jo , Chang Wahn Yu , Heon Kook Kwon , Byung Su Kang , Kwang Chun Lee
发明人： Gweon Do Jo , Chang Wahn Yu , Heon Kook Kwon , Byung Su Kang , Kwang Chun Lee
IPC分类号： H04L27/12
CPC分类号： H03M7/6023 , H04L27/26
摘要： The method for transmitting a signal of an orthogonal frequency division multiplexing type according to an exemplary embodiment of the present invention has a configuration allowing a radio unit (RU) to perform a component adding a compression component and a decompression component before/after a serial interface interlocking between a digital unit (DU) and the radio unit (RU) and a component inserting a cyclic prefix (CP) into a signal so as to secure orthogonality of an orthogonal frequency division multiplexing (OFDM) signal, in a structure in which a base station is physically divided into the DU and the RU.
摘要翻译：根据本发明的示例性实施例的用于发送正交频分复用类型的信号的方法具有允许无线电单元（RU）在串行接口之前/之后执行添加压缩分量和解压缩分量的分量的配置在数字单元（DU）和无线电单元（RU）之间互锁，以及将一个循环前缀（CP）插入到信号中以便确保正交频分复用（OFDM）信号的正交性的组件，其中基站在物理上分为DU和RU。

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