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51. 发明授权

US07746951B2 Log-likelihood ration (LLR) generating apparatus and method in Multiple Input Multiple Output (MIMO) antenna communication system 有权
标题翻译：多输入多输出（MIMO）天线通信系统中的对数似然比（LLR）生成装置和方法
公开(公告)号：US07746951B2
公开(公告)日：2010-06-29
申请号：US11600524
申请日：2006-11-16
申请人： Keun-Chul Hwang , Soon-Young Yoon , Young-Hoon Kwon
发明人： Keun-Chul Hwang , Soon-Young Yoon , Young-Hoon Kwon
IPC分类号： H04B7/02
CPC分类号： H04B7/0848 , H04B7/0413 , H04L25/067
摘要： A Log-Likelihood Ratio (LLR) generating apparatus and method in a communication system using a spatial multiplexing scheme. The reception method includes acquiring at least one estimated transmit vector by demodulating a receive vector using at least one Multiple Input Multiple Output (MIMO) detection process; selecting one of the at least one estimated transmit vector as an optimum estimated transmit vector; calculating LLRs with respect to the optimum estimated transmit vector; calculating a weight to be applied to each of elements constructing the optimum estimated transmit vector; and applying the weight to each of the calculated LLRs. Accordingly, the present invention can generate the LLRs with high reliability similar to the LLRs of a Maximum Likelihood receiver by applying the weight to the LLRs generated from the estimated transmit vector.
摘要翻译：在使用空间复用方案的通信系统中的对数似然比（LLR）生成装置和方法。接收方法包括：使用至少一个多输入多输出（MIMO）检测过程来解调接收向量来获取至少一个估计的发射矢量; 选择所述至少一个估计的发射矢量中的一个作为最佳估计的发射矢量; 相对于最佳估计传输矢量计算LLR; 计算要应用于构成最佳估计传输矢量的每个元素的权重; 并且将权重应用于每个所计算的LLR。因此，本发明可以通过将权重应用于从所估计的发送向量生成的LLR，来生成与最大似然接收机的LLR相似的高可靠性的LLR。

52. 发明申请

US20080025442A1 Method and apparatus for receiving data in a communication system 有权
标题翻译：用于在通信系统中接收数据的方法和装置
公开(公告)号：US20080025442A1
公开(公告)日：2008-01-31
申请号：US11716385
申请日：2007-03-09
申请人： Keun-Chul Hwang , Soon-Young Yoon
发明人： Keun-Chul Hwang , Soon-Young Yoon
IPC分类号： H04L1/00
CPC分类号： H04L25/03171 , H04L1/0618 , H04L2025/03375
摘要： A method and apparatus for receiving data in a communication system is disclosed. Receiving a first signal from a transmitter, a first canceller cancels from the received first signal a second signal desired to be received from the transmitter. A second canceller detects and cancels an interference signal from the second signal-canceled first signal. A calculator calculates a Log Likelihood Ratio (LLR) of the interference signal-canceled first signal.
摘要翻译：公开了一种在通信系统中接收数据的方法和装置。从发射机接收第一信号，第一消除器从接收的第一信号中取消期望从发射机接收的第二信号。第二消除器检测并消除来自第二信号消除的第一信号的干扰信号。计算器计算干扰信号消除的第一信号的对数似然比（LLR）。

53. 发明授权

US08711964B2 Method and apparatus for pre-scheduling in closed-loop MU-MIMO antenna system 有权
标题翻译：用于在闭环MU-MIMO天线系统中进行预调度的方法和装置
公开(公告)号：US08711964B2
公开(公告)日：2014-04-29
申请号：US13019366
申请日：2011-02-02
申请人： Seung-Won Kang , Sung-Woo Park , Soon-Young Yoon , Keun-Chul Hwang
发明人： Seung-Won Kang , Sung-Woo Park , Soon-Young Yoon , Keun-Chul Hwang
IPC分类号： H04B7/02
CPC分类号： H04B7/02
摘要： A method and an apparatus for pre-scheduling in a closed-loop multiple user multiple input multiple output (MU-MIMO) antenna system. A base station receives channel information representing a downlink channel condition of each mobile station from mobile stations in a cell, and determines a candidate user group for each of frequency bands included in an entire frequency band, based on the channel information, the candidate user group including mobile stations to which resources can be simultaneously allocated. The base station also instructs a mobile station included in each candidate user group to transmit a sounding signal through a corresponding frequency band. If the sounding signal is received through the corresponding frequency band, the base station performs a scheduling with regard to the mobile station included in each candidate user group.
摘要翻译：一种用于在闭环多用户多输入多输出（MU-MIMO）天线系统中进行预调度的方法和装置。基站从小区中的移动台接收表示各移动站的下行链路信道状态的信道信息，并根据信道信息确定候选用户群，该候选用户群基于频道信息，包含在候选用户组包括可以同时分配资源的移动台。基站还指示包括在每个候选用户组中的移动台通过对应的频带发送探测信号。如果通过相应的频带接收到探测信号，则基站对每个候选用户组中包括的移动台进行调度。

54. 发明授权

US07848464B2 Method and apparatus for receiving data in a communication system 有权
标题翻译：用于在通信系统中接收数据的方法和装置
公开(公告)号：US07848464B2
公开(公告)日：2010-12-07
申请号：US11716385
申请日：2007-03-09
申请人： Keun-Chul Hwang , Soon-Young Yoon
发明人： Keun-Chul Hwang , Soon-Young Yoon
IPC分类号： H04L27/06
CPC分类号： H04L25/03171 , H04L1/0618 , H04L2025/03375
摘要： A method and apparatus for receiving data in a communication system is disclosed. Receiving a first signal from a transmitter, a first canceller cancels from the received first signal a second signal desired to be received from the transmitter. A second canceller detects and cancels an interference signal from the second signal-canceled first signal. A calculator calculates a Log Likelihood Ratio (LLR) of the interference signal-canceled first signal.
摘要翻译：公开了一种在通信系统中接收数据的方法和装置。从发射机接收第一信号，第一消除器从接收的第一信号中取消期望从发射机接收的第二信号。第二消除器检测并消除来自第二信号消除的第一信号的干扰信号。计算器计算干扰信号消除的第一信号的对数似然比（LLR）。

55. 发明申请

US20090264087A1 Apparatus and method for beamforming considering interference amount in broadband wireless communication system 有权
标题翻译：考虑宽带无线通信系统中的干扰量的波束成形装置和方法
公开(公告)号：US20090264087A1
公开(公告)日：2009-10-22
申请号：US12386464
申请日：2009-04-17
申请人： Heon-Ki Chae , Keun-Chul Hwang , Soon-Young Yoon
发明人： Heon-Ki Chae , Keun-Chul Hwang , Soon-Young Yoon
IPC分类号： H04B1/04
CPC分类号： H04B7/0408 , H04B7/0617 , H04B7/0848
摘要： An apparatus and method for beamforming in a broadband wireless communication are provided. The apparatus includes a first calculator for determining a degradation factor to indicate a degradation degree of a target signal due to interference cancellation by using a target channel matrix and at least one interfering channel matrix, a second calculator for determining a new noise power value to be used to calculate a beamforming vector if the degradation factor is greater than or equal to a threshold, and for determining the beamforming vector by using the new noise power value, and a beamformer for performing beamforming on a signal transmitted/received with a target Mobile Station (MS) by using the beamforming vector.
摘要翻译：提供了一种宽带无线通信中波束成形的装置和方法。该装置包括：第一计算器，用于通过使用目标信道矩阵和至少一个干扰信道矩阵来确定由于干扰消除引起的目标信号的劣化程度的劣化因子;第二计算器，用于将新的噪声功率值确定为如果劣化因子大于或等于阈值，则用于计算波束形成向量，并且用于通过使用新的噪声功率值来确定波束形成向量;以及波束形成器，用于对与目标移动台发送/接收的信号进行波束形成（MS）。

56. 发明申请

US20070127589A1 Log-likelihood ration (LLR) generating apparatus and method in MIMO antenna communication system 有权
标题翻译： MIMO天线通信系统中的对数似然比（LLR）生成装置和方法
公开(公告)号：US20070127589A1
公开(公告)日：2007-06-07
申请号：US11600524
申请日：2006-11-16
申请人： Keun-Chul Hwang , Soon-Young Yoon , Young-Heon Kwon
发明人： Keun-Chul Hwang , Soon-Young Yoon , Young-Heon Kwon
IPC分类号： H04L1/02
CPC分类号： H04B7/0848 , H04B7/0413 , H04L25/067
摘要： A Log-Likelihood Ratio (LLR) generating apparatus and method in a communication system using a spatial multiplexing scheme. The reception method includes acquiring at least one estimated transmit vector by demodulating a receive vector using at least one Multiple Input Multiple Output (MIMO) detection process; selecting one of the at least one estimated transmit vector as an optimum estimated transmit vector; calculating LLRs with respect to the optimum estimated transmit vector; calculating a weight to be applied to each of elements constructing the optimum estimated transmit vector; and applying the weight to each of the calculated LLRs. Accordingly, the present invention can generate the LLRs with high reliability similar to the LLRs of a Maximum Likelihood receiver by applying the weight to the LLRs generated from the estimated transmit vector.
摘要翻译：在使用空间复用方案的通信系统中的对数似然比（LLR）生成装置和方法。接收方法包括：使用至少一个多输入多输出（MIMO）检测过程来解调接收向量来获取至少一个估计的发射矢量; 选择所述至少一个估计的发射矢量中的一个作为最佳估计的发射矢量; 相对于最佳估计传输矢量计算LLR; 计算要应用于构成最佳估计传输矢量的每个元素的权重; 并且将权重应用于每个所计算的LLR。因此，本发明可以通过将权重应用于从所估计的发送向量生成的LLR，来生成与最大似然接收机的LLR相似的高可靠性的LLR。

57. 发明授权

US08358718B2 Apparatus and method for determining optimum integer perturbation vector of low complexity in multiple antenna system 有权
标题翻译：用于确定多天线系统中低复杂度的最优整数扰动矢量的装置和方法
公开(公告)号：US08358718B2
公开(公告)日：2013-01-22
申请号：US12798185
申请日：2010-03-30
申请人： Sung-Ho Lee , Keun-Chul Hwang , Soon-Young Yoon , In-Kyu Lee , Seok-Hwan Park
发明人： Sung-Ho Lee , Keun-Chul Hwang , Soon-Young Yoon , In-Kyu Lee , Seok-Hwan Park
IPC分类号： H04L27/00
CPC分类号： H04B7/0452 , H04B7/0456 , H04J11/0033 , H04L25/0204 , H04L25/0244 , H04L25/03343
摘要： An apparatus and a method for determining an optimum integer perturbation vector of a low complexity in a multiple antenna system include a transmitter that transmits data using an optimum integer perturbation vector of a low complexity in a multiple antenna system includes a module pre-processor, a shift pre-processor, and a precoder. The modulo pre-processor adds an integer perturbation vector to a transmission signal vector. The shift pre-processor phase-shifts a pseudo inverse matrix of a channel matrix using a phase angle. The precoder precodes a transmission signal vector perturbed by the integer perturbation vector using the phase-shifted pseudo inverse matrix of the channel matrix.
摘要翻译：用于确定多天线系统中的低复杂度的最佳整数扰动矢量的装置和方法包括使用多天线系统中的低复杂度的最佳整数扰动向量来发射数据的发射机，包括模块预处理器，移位预处理器和预编码器。模数预处理器将一个整数扰动矢量加到传输信号矢量上。移位预处理器使用相位角相移一个信道矩阵的伪逆矩阵。预编码器使用信道矩阵的相移伪逆矩阵来预处理由整数扰动向量扰动的传输信号向量。

58. 发明申请

US20090239472A1 Apparatus and method for removing interference in multiple antenna system 有权
标题翻译：用于消除多天线系统干扰的装置和方法
公开(公告)号：US20090239472A1
公开(公告)日：2009-09-24
申请号：US12383144
申请日：2009-03-20
申请人： Heon-Ki Chae , Keun-Chul Hwang , Soon-Young Yoon
发明人： Heon-Ki Chae , Keun-Chul Hwang , Soon-Young Yoon
IPC分类号： H04B15/00
CPC分类号： H04B7/086 , H04B7/0617
摘要： Provided are an apparatus and a method for removing an interference in a multiple antenna system. The apparatus includes a channel estimator, a covariance matrix generator, a weight calculator, and a beam forming unit. The channel estimator estimates a channel for a service cell and an interference channel for an adjacent cell using sounding signals via a plurality of antennas. The covariance matrix generator generates a covariance matrix as an average value from the interference channel. The weight calculator calculates a beam coefficient using the covariance matrix. The beam forming unit forms a beam using the beam coefficient.
摘要翻译：提供了一种用于消除多天线系统中的干扰的装置和方法。该装置包括信道估计器，协方差矩阵发生器，权重计算器和波束形成单元。信道估计器使用经由多个天线的探测信号估计用于服务小区的信道和相邻小区的干扰信道。协方差矩阵发生器产生协方差矩阵作为来自干扰信道的平均值。权重计算器使用协方差矩阵计算光束系数。光束形成单元使用光束系数形成光束。

59. 发明申请

US20080188186A1 Apparatus and method for transmitting channel sounding signal in wireless communication system 有权
标题翻译：在无线通信系统中发送信道探测信号的装置和方法
公开(公告)号：US20080188186A1
公开(公告)日：2008-08-07
申请号：US12012382
申请日：2008-01-31
申请人： Keun-Chul Hwang , Sung-Ho Lee , Soon-Young Yoon , In-Kyu Lee , Seok-Hwan Park
发明人： Keun-Chul Hwang , Sung-Ho Lee , Soon-Young Yoon , In-Kyu Lee , Seok-Hwan Park
IPC分类号： H04B1/00 , H04B7/00
CPC分类号： H04B7/0808 , H04L25/0224
摘要： Provided is an apparatus and method for transmitting a channel sounding signal from a user terminal in a multiple antenna system. In the method, a channel for each of a plurality of antennas is estimated. The receiving signal power of each of the antennas is calculated using the channel information obtained through the channel estimation. The antenna with the highest RX signal power is selected. Therefore, it is possible to enhance the signal reception performance of the user terminal.
摘要翻译：提供了一种用于从多天线系统中的用户终端发送信道探测信号的装置和方法。在该方法中，估计用于多个天线中的每一个的信道。使用通过信道估计获得的信道信息来计算每个天线的接收信号功率。选择RX信号功率最高的天线。因此，可以提高用户终端的信号接收性能。

60. 发明申请

US20070237272A1 Apparatus and method for generating log likelihood ratio in multiple-input multiple-output communication system 有权
标题翻译：在多输入多输出通信系统中产生对数似然比的装置和方法
公开(公告)号：US20070237272A1
公开(公告)日：2007-10-11
申请号：US11784435
申请日：2007-04-07
申请人： Keun-Chul Hwang , Soong-Yoon Choi , Soon-Young Yoon
发明人： Keun-Chul Hwang , Soong-Yoon Choi , Soon-Young Yoon
IPC分类号： H04L1/02
CPC分类号： H04L25/067 , H04B7/0697 , H04B7/0854 , H04L25/03184 , H04L27/38 , H04L2025/03426
摘要： An apparatus and method for generating LLRs in an MIMO communication system. In a receiver for a spatial multiplexing communication system, a determiner performs an MML decoding operation in an ascending or descending order of TX antennas to estimate a plurality of candidate TX vectors. A distance calculator calculates a Euclidean distance for each of the candidate TX vectors from the determiner. An LLR calculator calculates LLRs using the Euclidean distances from the distance calculator. Accordingly, it is possible to generate an LLR with high reliability at low complexity in an MIMO communication system.
摘要翻译：一种用于在MIMO通信系统中生成LLR的装置和方法。在用于空间复用通信系统的接收机中，确定器以TX天线的升序或降序执行MML解码操作，以估计多个候选TX向量。距离计算器计算来自确定器的每个候选TX矢量的欧几里得距离。 LLR计算器使用距离计算器的欧氏距离计算LLR。因此，可以在MIMO通信系统中以低复杂度生成具有高可靠性的LLR。

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