专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20090147887A1 METHOD OF CALCULATING SOFT VALUE AND METHOD OF DETECTING TRANSMISSION SIGNAL 有权
标题翻译：计算软值的方法和检测传输信号的方法
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。

2. 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。

3. 发明申请

US20080137781A1 METHOD OF DETECTING SPACE-TIME CODE IN MOBILE COMMUNICATION SYSTEM WITH 4 Tx ANTENNA 有权
标题翻译：使用4个Tx天线检测移动通信系统中的时间码的方法
公开(公告)号：US20080137781A1
公开(公告)日：2008-06-12
申请号：US11930013
申请日：2007-10-30
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： H04L27/06
CPC分类号： H04L25/03242 , H04L1/0631
摘要： The present invention relates to a method of detecting a space-time code in a mobile communication system. When detecting a space-time code B for a plurality of transmitting antennas, an ML (maximum likelihood) metric, which is generally calculated by using a specific structure of a matrix B, is defined as a new ML metric by reducing a variable of the ML metric. Two dependent sphere decoding processes are performed and an intersection of the decoding results is calculated, and a signal is detected from the ML metric. Therefore, since detection of the space-time code B for the plurality of transmitting antennas is performed by using the newly defined ML metric, an amount of matrix calculated can be reduced, and a calculation amount can be reduced by performing the two dependent sphere decoding processes. Further, since a detection order of symbols is changed according to a channel situation, it is possible to improve the performance of the system.
摘要翻译：本发明涉及一种在移动通信系统中检测时空码的方法。当检测到多个发射天线的时空码B时，通常通过使用矩阵B的特定结构计算的ML（最大似然度）度量被定义为新的ML度量，通过减少 ML度量。执行两个相关球体解码处理，并且计算解码结果的交点，并且从ML度量检测信号。因此，由于通过使用新定义的ML度量来执行多个发送天线的空时码B的检测，所以可以减少计算出的矩阵的量，并且可以通过执行两个相关球体解码来减少计算量过程。此外，由于符号的检测顺序根据通道情况而改变，因此可以提高系统的性能。

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. 发明申请

US20080137782A1 SIGNAL DETECTION METHOD AND RECEIVING APPARATUS IN MIMO SYSTEM 有权
标题翻译： MIMO系统中的信号检测方法和接收装置
公开(公告)号：US20080137782A1
公开(公告)日：2008-06-12
申请号：US11930047
申请日：2007-10-30
申请人： Seung-Jae BAHNG , Young-Jo BANG , Youn-Ok PARK
发明人： Seung-Jae BAHNG , Young-Jo BANG , Youn-Ok PARK
IPC分类号： H03D1/00 , H04L1/02
CPC分类号： H04B7/0413 , H04L1/0656 , H04L25/0204 , H04L25/0246
摘要： The present invention relates to a signal detection method and a receiving apparatus in a multiple input multiple output (MIMO) system. More particularly, the present invention relates to a signal detection device in a MIMO system using a spatial multiplexing (SM) method. In the signal detection method, a channel is estimated and layers are rearranged according to a predetermined layer arrangement rule. QR-decomposition is performed by using a rearranged system model, all constellation points in a symbol of a layer having the lowest reliability are considered, and symbols are detected by using a sequential interference elimination method.
摘要翻译：本发明涉及多输入多输出（MIMO）系统中的信号检测方法和接收装置。更具体地，本发明涉及使用空间复用（SM）方法的MIMO系统中的信号检测装置。在信号检测方法中，估计信道并根据预定层布置规则重新布置层。通过使用重排系统模型进行QR分解，考虑具有最低可靠性的层的符号中的所有星座点，并且通过使用顺序干扰消除方法来检测符号。

7. 发明申请

US20070133728A1 Apparatus and method for acquiring frame timing in communication system 有权
标题翻译：在通信系统中获取帧定时的装置和方法
公开(公告)号：US20070133728A1
公开(公告)日：2007-06-14
申请号：US11636797
申请日：2006-12-11
申请人： Seung-Jae Bahng , Youn-Ok Park , Chang-Wahn Yu , Eon-Young Hong
发明人： Seung-Jae Bahng , Youn-Ok Park , Chang-Wahn Yu , Eon-Young Hong
IPC分类号： H04L25/38
CPC分类号： H04L27/2656 , H04L27/2676
摘要： Disclosed is an apparatus for acquiring initial frame timing in a communication system having a normalizer that calculates a normalized window power from powers of samples of received signal during a monitoring period, a cross power calculator that calculates a window cross power from cross powers of the samples during the monitoring period, and each cross power corresponds to multiplication of two of the samples, a divider that divides the window cross power by the normalized window power and outputs a metric for a sample corresponding to the monitoring period, and a peak-value detector that searches a sample having the maximum value among metrics for the samples of the received signals during a predetermined period, and the metrics are calculated by shifting the monitoring period, with a sample next to the sample searched by the peak-value detector being determined as a starting point of a frame.
摘要翻译：公开了一种用于在具有归一化器的通信系统中获取初始帧定时的装置，该归一化器根据监视期间的接收信号的采样功率计算归一化窗功率;交叉功率计算器，其从样本的交叉功率计算窗口交叉功率在监视期间，并且每个交叉功率对应于两个样本的乘法，分频器将窗口交叉功率除以归一化窗功率，并输出对应于监视周期的样本的度量，以及峰值检测器在预定时间段内搜索具有接收信号样本的度量中的最大值的样本，并且通过将监测周期移位，通过峰值检测器搜索的样本旁边的样本被确定为一个框架的起点。

8. 发明授权

US08098777B2 Signal detection method and receiving apparatus in MIMO system 有权
标题翻译： MIMO系统中的信号检测方法和接收装置
公开(公告)号：US08098777B2
公开(公告)日：2012-01-17
申请号：US11930047
申请日：2007-10-30
申请人： Seung-Jae Bahng , Young-Jo Bang , Youn-Ok Park
发明人： Seung-Jae Bahng , Young-Jo Bang , Youn-Ok Park
IPC分类号： H03D1/04 , H03D1/06 , H03K5/01 , H03K6/04 , H04B1/10 , H04L1/00 , H04L25/08
CPC分类号： H04B7/0413 , H04L1/0656 , H04L25/0204 , H04L25/0246
摘要： The present invention relates to a signal detection method and a receiving apparatus in a multiple input multiple output (MIMO) system. More particularly, the present invention relates to a signal detection device in a MIMO system using a spatial multiplexing (SM) method. In the signal detection method, a channel is estimated and layers are rearranged according to a predetermined layer arrangement rule. QR-decomposition is performed by using a rearranged system model, all constellation points in a symbol of a layer having the lowest reliability are considered, and symbols are detected by using a sequential interference elimination method.
摘要翻译：本发明涉及多输入多输出（MIMO）系统中的信号检测方法和接收装置。更具体地，本发明涉及使用空间复用（SM）方法的MIMO系统中的信号检测装置。在信号检测方法中，估计信道并根据预定层布置规则重新布置层。通过使用重排系统模型进行QR分解，考虑具有最低可靠性的层的符号中的所有星座点，并且通过使用顺序干扰消除方法来检测符号。

9. 发明授权

US08054909B2 Method of selecting candidate vector and method of detecting transmission symbol 有权
标题翻译：选择候选矢量的方法和检测传输符号的方法
公开(公告)号：US08054909B2
公开(公告)日：2011-11-08
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 , G06Q30/00
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。

10. 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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式