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1. 发明授权

US07864896B2 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：US07864896B2
公开(公告)日：2011-01-04
申请号：US11784435
申请日：2007-04-06
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： H04L27/06
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。

2. 发明授权

US07720181B2 Apparatus and method for iterative detection and decoding (IDD) in multi-antenna communication system 有权
标题翻译：多天线通信系统中迭代检测和解码（IDD）的装置和方法
公开(公告)号：US07720181B2
公开(公告)日：2010-05-18
申请号：US11638786
申请日：2006-12-14
申请人： Sung-Woo Park , Keun-Chul Hwang , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , June Moon , Soong-Yoon Choi
发明人： Sung-Woo Park , Keun-Chul Hwang , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , June Moon , Soong-Yoon Choi
IPC分类号： H04L27/06
CPC分类号： H04L1/005 , H04L1/0048 , H04L25/03242 , H04L27/2647 , H04L2025/03426
摘要： An Iterative Detection and Decoding (IDD) receiving apparatus and method in a multiple input multiple output (MIMO) communication system. The IDD receiving apparatus includes an MIMO detector which generates soft decision values of coded bits by MIMO-decoding a receive vector, feedback priori information, and a list of candidate coded symbol vectors; a decoder which Soft-Input/Soft-Output (SISO)-decodes the soft decision values generated at the MIMO detector and feeds back soft decision values of the coded bits to the MIMO detector; a hard decision part which generates a coded symbol vector by performing a hard decision on the soft decision values generated at the decoder; and a list updater which generates a list of candidate coded symbol vectors using the receive vector and provides the list to the MIMO detector at a first iteration, updates the list using the coded symbol vector fed from the hard decision part, and provides the updated list to the MIMO detector at subsequent iterations.
摘要翻译：一种多输入多输出（MIMO）通信系统中的迭代检测和解码（IDD）接收装置和方法。 IDD接收装置包括MIMO检测器，其通过对接收向量进行MIMO解码，反馈先验信息和候选编码符号向量列表来生成编码比特的软判决值; 软输入/软输出（SISO）的解码器 - 对在MIMO检测器处产生的软判决值进行解码，并将编码比特的软判决值反馈给MIMO检测器; 硬判决部分，通过对解码器上产生的软决策值执行硬判决来产生编码符号向量; 以及列表更新器，其使用接收向量生成候选编码符号向量的列表，并且在第一次迭代时将该列表提供给MIMO检测器，使用从硬判决部分馈送的编码符号向量来更新列表，并提供更新的列表在随后的迭代中到MIMO检测器。

3. 发明申请

US20060281462A1 Method for performing handover in a mobile communication system 审中-公开
标题翻译：用于在移动通信系统中执行切换的方法
公开(公告)号：US20060281462A1
公开(公告)日：2006-12-14
申请号：US11452813
申请日：2006-06-14
申请人： Jong-In Kim , Young-Hoon Kwon , Sung-Soo Hwang , Soon-Young Yoon , Yong-Seok Kim , Soong-Yoon Choi , Ki-Young Han , Keun-Chul Hwang
发明人： Jong-In Kim , Young-Hoon Kwon , Sung-Soo Hwang , Soon-Young Yoon , Yong-Seok Kim , Soong-Yoon Choi , Ki-Young Han , Keun-Chul Hwang
IPC分类号： H04Q7/20
CPC分类号： H04W36/30
摘要： Disclosed is a method for determining handover of a mobile station by a mobile station in a mobile communication system. The method includes measuring a downlink reference signal intensity of a serving base station; determining to perform scanning for measurement of reference signal intensities of the serving base station and neighbor base stations, when the measured downlink reference signal intensity of the serving base station is less than a reference value, negotiating with the serving base station for a scanning period and the number of scanning repetitions, measuring the reference signal intensities of the serving base station and the neighbor base stations, and resetting the reference value when a reference signal intensity of the serving base station is greater than or equal to reference signal intensities of neighbor base stations.
摘要翻译：公开了移动通信系统中移动台确定移动台的切换的方法。该方法包括：测量服务基站的下行链路参考信号强度; 当所测量的服务基站的下行链路参考信号强度小于参考值时，确定执行对服务基站和相邻基站的参考信号强度的测量的扫描，在服务基站与扫描周期协商，扫描重复次数，测量服务基站和相邻基站的参考信号强度，并且当服务基站的参考信号强度大于或等于相邻基站的参考信号强度时，重新设置参考值。

4. 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。

5. 发明申请

US20070230609A1 Iterative detection and decoding apparatus and method in MIMO system 有权
标题翻译： MIMO系统中的迭代检测和解码设备和方法
公开(公告)号：US20070230609A1
公开(公告)日：2007-10-04
申请号：US11640618
申请日：2006-12-18
申请人： Keun-Chul Hwang , Sung-Woo Park , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , Soong-Yoon Choi
发明人： Keun-Chul Hwang , Sung-Woo Park , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , Soong-Yoon Choi
IPC分类号： H04L1/02
CPC分类号： H04L1/005 , H04L25/03171 , H04L25/03318
摘要： An iterative detection and decoding method in a Multiple Input Multiple Output (MIMO) system includes detecting entire MIMO nodes to generate soft decision values; decoding a first soft decision value among the soft decision values; determining whether to perform an iterative detection and decoding by measuring reliability of the decoded first decoding signal; generating a soft decision value by performing a redetection of a MIMO node containing the soft decision value, when the decoded soft decision value is iteratively detected and decoded; and decoding a second soft decision value among the soft decision values.
摘要翻译：多输入多输出（MIMO）系统中的迭代检测和解码方法包括检测整个MIMO节点以产生软判决值; 解码软判决值中的第一软判决值; 通过测量解码的第一解码信号的可靠性来确定是否执行迭代检测和解码; 当解码的软判决值被迭代检测和解码时，通过执行包含软判决值的MIMO节点的重新检测来产生软判决值; 以及对所述软判决值中的第二软判决值进行解码。

6. 发明授权

US08027401B2 Iterative detection and decoding apparatus and method in MIMO system 有权
标题翻译： MIMO系统中的迭代检测和解码设备和方法
公开(公告)号：US08027401B2
公开(公告)日：2011-09-27
申请号：US11640618
申请日：2006-12-18
申请人： Keun-Chul Hwang , Sung-Woo Park , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , Soong-Yoon Choi
发明人： Keun-Chul Hwang , Sung-Woo Park , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , Soong-Yoon Choi
IPC分类号： H04L1/02
CPC分类号： H04L1/005 , H04L25/03171 , H04L25/03318
摘要： An iterative detection and decoding method in a Multiple Input Multiple Output (MIMO) system includes detecting entire MIMO nodes to generate soft decision values; decoding a first soft decision value among the soft decision values; determining whether to perform an iterative detection and decoding by measuring reliability of the decoded first decoding signal; generating a soft decision value by performing a redetection of a MIMO node containing the soft decision value, when the decoded soft decision value is iteratively detected and decoded; and decoding a second soft decision value among the soft decision values.
摘要翻译：多输入多输出（MIMO）系统中的迭代检测和解码方法包括检测整个MIMO节点以产生软判决值; 解码软判决值中的第一软判决值; 通过测量解码的第一解码信号的可靠性来确定是否执行迭代检测和解码; 当解码的软判决值被迭代检测和解码时，通过执行包含软判决值的MIMO节点的重新检测来产生软判决值; 以及对所述软判决值中的第二软判决值进行解码。

7. 发明申请

US20070133709A1 Apparatus and method for iterative detection and decoding (IDD) in multi-antenna communication system 有权
标题翻译：多天线通信系统中迭代检测和解码（IDD）的装置和方法
公开(公告)号：US20070133709A1
公开(公告)日：2007-06-14
申请号：US11638786
申请日：2006-12-14
申请人： Sung-Woo Park , Keun-Chul Hwang , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , June Moon , Soong-Yoon Choi
发明人： Sung-Woo Park , Keun-Chul Hwang , Soon-Young Yoon , Young-Hoon Kwon , Sung-Soo Hwang , June Moon , Soong-Yoon Choi
IPC分类号： H04L1/02
CPC分类号： H04L1/005 , H04L1/0048 , H04L25/03242 , H04L27/2647 , H04L2025/03426
摘要： An Iterafive Detection and Decoding (IDD) receiving apparatus and method in a multiple input multiple output (MIMO) communication system. The IDD receiving apparatus includes an MIMO detector which generates soft decision values of coded bits by MIMO-decoding a receive vector, feedback priori information, and a list of candidate coded symbol vectors; a decoder which Soft-Input/Soft-Output (SISO)-decodes the soft decision values generated at the MIMO detector and feeds back soft decision values of the coded bits to the MIMO detector; a hard decision part which generates a coded symbol vector by performing a hard decision on the soft decision values generated at the decoder; and a list updater which generates a list of candidate coded symbol vectors using the receive vector and provides the list to the MIMO detector at a first iteration, updates the list using the coded symbol vector fed from the hard decision part, and provides the updated list to the MIMO detector at subsequent iterations.
摘要翻译：一种多输入多输出（MIMO）通信系统中的Iterafive检测和解码（IDD）接收装置和方法。 IDD接收装置包括MIMO检测器，其通过对接收向量进行MIMO解码，反馈先验信息和候选编码符号向量列表来生成编码比特的软判决值; 软输入/软输出（SISO）的解码器 - 对在MIMO检测器处产生的软判决值进行解码，并将编码比特的软判决值反馈给MIMO检测器; 硬判决部分，通过对解码器上产生的软决策值执行硬判决来生成编码符号向量; 以及列表更新器，其使用接收向量生成候选编码符号向量的列表，并且在第一次迭代时将该列表提供给MIMO检测器，使用从硬判决部分馈送的编码符号向量来更新列表，并提供更新的列表在随后的迭代中到MIMO检测器。

8. 发明申请

US20070032206A1 Spatial multiplexing detection apparatus and method in MIMO system 有权
标题翻译： MIMO系统中的空间复用检测装置和方法
公开(公告)号：US20070032206A1
公开(公告)日：2007-02-08
申请号：US11499164
申请日：2006-08-04
申请人： Keun-Chul Hwang , Soong-Yoon Choi , Jae-Kwon Kim , Cheol-Woo You
发明人： Keun-Chul Hwang , Soong-Yoon Choi , Jae-Kwon Kim , Cheol-Woo You
IPC分类号： H04B1/02 , H04B7/02
CPC分类号： H04B7/0697 , H04L1/0631 , H04L25/0204
摘要： Provided are a spatial multiplexing apparatus and method in a Multiple Input Multiple Output (MIMO) system. The spatial multiplexing detection method includes estimating channels of a received signal, and sorting the estimated channels in descending order according to a scheme; generating a subsystem of a minimum unit by nulling an arbitrary channel among the sorted channels; performing a modified maximum likelihood (MML) in the subsystem of the minimum unit to calculate a number of transmission signal vectors; and calculating Euclidean distances of the number of the transmission signal vectors, and selecting a transmission signal vector having a minimum Euclidean distance. Accordingly, the receiver exhibits a performance level similar to a Maximum Likelihood (ML) and can obtain the complexity similar to successive interference cancellation (SIC).
摘要翻译：提供了一种多输入多输出（MIMO）系统中的空间复用装置和方法。空间复用检测方法包括估计接收信号的信道，并按照方案按降序对估计信道进行排序; 通过使排序的频道中的任意频道舍弃来生成最小单位的子系统; 在最小单位的子系统中执行修改的最大似然（MML）以计算传输信号向量的数量; 并计算发送信号向量的欧几里得距离，并选择具有最小欧几里德距离的发送信号向量。因此，接收机呈现类似于最大似然（ML）的性能水平，并且可以获得与连续干扰消除（SIC）类似的复杂度。

9. 发明授权

US07978798B2 Spatial multiplexing detection apparatus and method in MIMO system 有权
标题翻译： MIMO系统中的空间复用检测装置和方法
公开(公告)号：US07978798B2
公开(公告)日：2011-07-12
申请号：US11499164
申请日：2006-08-04
申请人： Keun-Chul Hwang , Soong-Yoon Choi , Jae-Kwon Kim , Cheol-Woo You
发明人： Keun-Chul Hwang , Soong-Yoon Choi , Jae-Kwon Kim , Cheol-Woo You
IPC分类号： H04B1/10
CPC分类号： H04B7/0697 , H04L1/0631 , H04L25/0204
摘要： Provided are a spatial multiplexing apparatus and method in a Multiple Input Multiple Output (MIMO) system. The spatial multiplexing detection method includes estimating channels of a received signal, and sorting the estimated channels in descending order according to a scheme; generating a subsystem of a minimum unit by nulling an arbitrary channel among the sorted channels; performing a modified maximum likelihood (MML) in the subsystem of the minimum unit to calculate a number of transmission signal vectors; and calculating Euclidean distances of the number of the transmission signal vectors, and selecting a transmission signal vector having a minimum Euclidean distance. Accordingly, the receiver exhibits a performance level similar to a Maximum Likelihood (ML) and can obtain the complexity similar to successive interference cancellation (SIC).
摘要翻译：提供了一种多输入多输出（MIMO）系统中的空间复用装置和方法。空间复用检测方法包括估计接收信号的信道，并按照方案按降序对估计信道进行排序; 通过使排序的频道中的任意频道舍弃来生成最小单位的子系统; 在最小单位的子系统中执行修改的最大似然（MML）以计算传输信号向量的数量; 并计算发送信号向量的欧几里得距离，并选择具有最小欧几里德距离的发送信号向量。因此，接收机呈现类似于最大似然（ML）的性能水平，并且可以获得与连续干扰消除（SIC）类似的复杂度。

10. 发明授权

US08577303B2 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：US08577303B2
公开(公告)日：2013-11-05
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
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。

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