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。

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。

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 。

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。

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。

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。

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。

公开(公告)号：US20070026896A1

公开(公告)日：2007-02-01

申请号：US11496815

申请日：2006-08-01

申请人： Ki-Young Han ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Eun-Sun Choi ,  Soong-Yoon Choi

发明人： Ki-Young Han ,  Young-Hoon Kwon ,  Sung-Soo Hwang ,  Soon-Young Yoon ,  Yong-Seok Kim ,  Eun-Sun Choi ,  Soong-Yoon Choi

IPC分类号： H04B1/38

CPC分类号： H04L27/2655 ,  H04L5/0023 ,  H04L5/0037 ,  H04L5/0053

摘要： Provided is an apparatus and method for simultaneously receiving data signals of two adjacent frequency allocation (FA) in a cellular environment. When there is another base station using an adjacent FA to an FA of the base station, a subcarrier mapper maps control information to subcarriers of predetermined sections such that a mobile station simultaneously receives data signals of the adjacent FAs. An inverse fast Fourier transform (IFFT) processor IFFT-processes data mapped to the subcarriers. Because two different BSs transmit the same data through independent paths, the mobile station can obtain a macro diversity gain. Also, it is possible to balance the loads of the two BSs.

摘要翻译： 提供了一种用于在蜂窝环境中同时接收两个相邻频率分配（FA）的数据信号的装置和方法。 当存在使用与基站的FA相邻的FA的另一基站时，子载波映射器将控制信息映射到预定部分的子载波，使得移动台同时接收相邻FA的数据信号。 反FFT快速傅里叶变换（IFFT）处理器IFFT处理映射到子载波的数据。 因为两个不同的BS通过独立的路径发送相同的数据，所以移动站可以获得宏分集增益。 此外，可以平衡两个BS的负载。

公开(公告)号：US20060276191A1

公开(公告)日：2006-12-07

申请号：US11433268

申请日：2006-05-12

申请人： Sung-Soo Hwang ,  Soong-Yoon Choi ,  Sei-Jei Cho ,  Soon-Young Yoon ,  Ki-Young Han ,  Yong-Seok Kim ,  Eun-Sun Choi ,  Young-Hoon Kwon

发明人： Sung-Soo Hwang ,  Soong-Yoon Choi ,  Sei-Jei Cho ,  Soon-Young Yoon ,  Ki-Young Han ,  Yong-Seok Kim ,  Eun-Sun Choi ,  Young-Hoon Kwon

IPC分类号： H04Q7/20

CPC分类号： H04W36/30

摘要： Provided is a method for determining handover of a mobile station by a serving base station in a mobile communication system. The method includes receiving traffic quality information from the mobile station; determining whether the traffic quality information satisfies a preset setting condition; if the traffic quality information satisfies the setting condition, sending a request for pilot signal strength measurement for the serving base station and adjacent base stations to the mobile station; receiving pilot signal strengths of the base stations, reported by the mobile station; determining whether there is a corresponding base station whose pilot signal strength exceeds the pilot signal strength of the serving base station; and determining handover of the mobile station to the corresponding base station.

摘要翻译： 提供了一种用于在移动通信系统中由服务基站确定移动台的切换的方法。 该方法包括从移动台接收流量质量信息; 确定所述交通质量信息是否满足预设的设置条件; 如果业务质量信息满足设置条件，则向移动台发送对服务基站和相邻基站的导频信号强度测量请求; 接收由移动台报告的基站的导频信号强度; 确定导频信号强度是否超过服务基站的导频信号强度的对应基站; 以及确定移动台到相应的基站的切换。

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。