公开(公告)号：US20070041467A1

公开(公告)日：2007-02-22

申请号：US11507285

申请日：2006-08-21

申请人： Jae-Kwon Kim ,  Seung-Hoon Nam

发明人： Jae-Kwon Kim ,  Seung-Hoon Nam

IPC分类号： H04L1/02

CPC分类号： H04L25/03203 ,  H04B7/04 ,  H04L1/0054 ,  H04L1/0631

摘要： Disclosed is a signal detection method for a receiver of a Multiple-Input Multiple-Output (MIMO) communication system having nT and nR (where nR is greater than or equal to nT) transmission and reception antennas, respectively, and an nT×nR channel matrix. The signal detection method includes selecting a plurality of sub-channel matrices having smaller dimensions than the nT×nR channel matrix, estimating transmission symbols received from corresponding transmission antennas using a maximum likelihood decoding method with respect to a received signal corresponding to each of the sub-channel matrices, estimating transmission symbols received from the remaining transmission antenna(s) using the estimated transmission symbols, temporarily storing a candidate symbol set composed of the estimated transmission symbols, and comparing candidate symbol sets corresponding to all the sub-channel matrices and determining the smallest candidate symbol set as a transmission symbol set.

摘要翻译： 公开了一种用于具有n个T和N个R（其中n个R'）的多输入多输出（MIMO）通信系统的接收机的信号检测方法， / SUB>分别大于或等于n T T个发送和接收天线，以及第n个T n个信道矩阵。 信号检测方法包括选择具有比第n个信道矩阵小的维数的多个子信道矩阵，使用最大值估计从对应的发送天线接收的传输符号 对于与每个子信道矩阵相对应的接收信号的似然解码方法，使用所估计的传输符号估计从剩余的发送天线接收的发送符号，临时存储由所估计的发送符号组成的候选符号集， 以及比较与所有子信道矩阵相对应的候选符号组，并确定最小候选符号集作为传输符号集合。

公开(公告)号：US07746950B2

公开(公告)日：2010-06-29

申请号：US11507285

申请日：2006-08-21

申请人： Jae-Kwon Kim ,  Seung-Hoon Nam

发明人： Jae-Kwon Kim ,  Seung-Hoon Nam

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L25/03203 ,  H04B7/04 ,  H04L1/0054 ,  H04L1/0631

摘要： Disclosed is a signal detection method for a receiver of a Multiple-Input Multiple-Output (MIMO) communication system having nT and nR (where nR is greater than or equal to nT) transmission and reception antennas, respectively, and an nT×nR channel matrix. The signal detection method includes selecting a plurality of sub-channel matrices having smaller dimensions than the nT×nR channel matrix, estimating transmission symbols received from corresponding transmission antennas using a maximum likelihood decoding method with respect to a received signal corresponding to each of the sub-channel matrices, estimating transmission symbols received from the remaining transmission antenna(s) using the estimated transmission symbols, temporarily storing a candidate symbol set composed of the estimated transmission symbols, and comparing candidate symbol sets corresponding to all the sub-channel matrices and determining the smallest candidate symbol set as a transmission symbol set.

摘要翻译： 公开了一种具有nT和nR（其中nR大于或等于nT）发送和接收天线的多输入多输出（MIMO）通信系统的接收机的信号检测方法，以及nT×nR信道 矩阵。 信号检测方法包括：选择具有比nT×nR信道矩阵小的维度的多个子信道矩阵，使用对应于每个子信道的接收信号的最大似然解码方法估计从对应的发送天线接收到的发送符号 - 通道矩阵，使用所估计的传输符号估计从剩余的传输天线接收的传输符号，临时存储由所估计的传输符号组成的候选符号集，并且比较与所有子信道矩阵相对应的候选符号集，并确定 将最小的候选符号设置为发送符号集合。

公开(公告)号：US08050356B2

公开(公告)日：2011-11-01

申请号：US11345717

申请日：2006-02-02

申请人： Seung-Hoon Nam ,  Chan-Soo Hwang ,  Jae-Hak Chung ,  Young-Ho Jung ,  Won-Il Roh ,  Chan-Byoung Chae

发明人： Seung-Hoon Nam ,  Chan-Soo Hwang ,  Jae-Hak Chung ,  Young-Ho Jung ,  Won-Il Roh ,  Chan-Byoung Chae

IPC分类号： H04L27/00

CPC分类号： H04B7/0689 ,  H04B7/0691 ,  H04B7/0871 ,  H04B7/0874 ,  H04L1/0071 ,  H04L1/06

摘要： A transmitter in a multiple input multiple output (MIMO) communication system is provided. The transmitter includes a multiplexer for multiplexing an input bit stream into a plurality of bit streams, and outputting the bit streams in parallel; a bit-order rearranger for reordering bits constituting the bit streams, which are output from the multiplexer in the same time period, and outputting the reordered bits as reordered bit streams; and a modulator for modulating the parallel reordered bit streams output from the bit-order rearranger according to their associated modulation schemes, and transmitting the modulated symbols via their associated antennas.

摘要翻译： 提供了一种多输入多输出（MIMO）通信系统中的发射机。 发射机包括多路复用器，用于将输入比特流复用成多个比特流，并且并行地输出比特流; 用于重新排序构成比特流的比特序列重排器，其在同一时间段内从多路复用器输出，并将重新排序的比特输出为重新排序的比特流; 以及调制器，用于根据它们相关联的调制方案来调制从位顺序重排器输出的并行重排序比特流，以及经由其相关天线发送调制符号。

公开(公告)号：US07907913B2

公开(公告)日：2011-03-15

申请号：US11702432

申请日：2007-02-05

申请人： Jong-Hyeuk Lee ,  Myeon-Kyun Cho ,  Seung-Hoon Nam ,  Jae-Yeun Yun ,  Yong-Hoon Lee ,  Sae-Young Chung ,  Jihoon Choi

发明人： Jong-Hyeuk Lee ,  Myeon-Kyun Cho ,  Seung-Hoon Nam ,  Jae-Yeun Yun ,  Yong-Hoon Lee ,  Sae-Young Chung ,  Jihoon Choi

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： H04B7/066 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0639 ,  H04L25/0204 ,  H04L25/022 ,  H04L27/2601

摘要： An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.

摘要翻译： 提供了一种用于确定基于码本的传输波束形成系统中的波束形成向量的装置和方法。 在基于码本的传输波束成形系统中的接收机的反馈方法中，使用M个当前和先前的信道估计来生成即将到来的周期的即将到来的信道值。 使用即将到来的信道值来计算包括在码本中的所有发送波束成形向量的有效信道增益。 对应于最大有效信道增益的码本索引被反馈给发射机。

公开(公告)号：US07623588B2

公开(公告)日：2009-11-24

申请号：US11235395

申请日：2005-09-26

申请人： Chang-Soon Park ,  Kwang-Bok Lee ,  Seung-Hoon Nam ,  Koo-Chul Jung

发明人： Chang-Soon Park ,  Kwang-Bok Lee ,  Seung-Hoon Nam ,  Koo-Chul Jung

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04B7/0626 ,  H04B7/066 ,  H04B7/0669 ,  H04L1/0003 ,  H04L1/0618 ,  H04L1/0675 ,  H04L25/0204 ,  H04L27/2608 ,  Y02D70/444

摘要： A data transmission method in a MIMO-OFDM communication system including at least one receiver for receiving a signal through a plurality of reception antennas and a transmitter for selecting a transmission channel using channel information being fed back from the receiver and transmitting a signal through a plurality of transmission antennas. The method includes selecting a spatial subchannel in which when bits are added by applying at least two spatial modes having different multiplexing gains for an individual subcarrier in a frequency domain, the minimum power increment is required during application of each spatial mode; allocating a spatial mode that requires the minimum total accumulated power, for each subcarrier; and selecting all subcarriers in the order of a subcarrier that requires the minimum power increment.

摘要翻译： 一种MIMO-OFDM通信系统中的数据传输方法，包括：至少一个接收机，用于通过多个接收天线接收信号;以及发射机，使用从接收机反馈的信道信息，并通过多个接收天线发送信号 的发射天线。 该方法包括选择空间子信道，其中当通过对频域中的各个子载波应用具有不同复用增益的至少两个空间模式来加上比特时，在每个空间模式的应用期间需要最小功率增量; 为每个子载波分配需要最小总累积功率的空间模式; 并按照需要最小功率增量的子载波的顺序选择所有子载波。

公开(公告)号：US07508891B2

公开(公告)日：2009-03-24

申请号：US11181147

申请日：2005-07-14

申请人： Young-Ho Jung ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Jin-Gon Joung ,  Woo-Seok Nam ,  Woo-Hyuk Chang

发明人： Young-Ho Jung ,  Seung-Hoon Nam ,  Yong-Hoon Lee ,  Jin-Gon Joung ,  Woo-Seok Nam ,  Woo-Hyuk Chang

IPC分类号： H04B7/10 ,  H04B1/00

CPC分类号： H04B7/0639 ,  H04B7/0417 ,  H04B7/0669 ,  H04B7/0691 ,  H04B7/0697 ,  H04L1/0656 ,  H04L1/0687

摘要： In a method for feeding back combination information of transmitted signals in a multiple-input multiple-output (MIMO) system using a multiple space-time block coding technique, mean square error values are computed in relation to the combination information pieces of the transmitted signals. An index of a combination having a minimum mean square error value from among the mean square error values is fed back.

摘要翻译： 在使用多空时块编码技术的多输入多输出（MIMO）系统中反馈发送信号的组合信息的方法中，相对于发送信号的组合信息片段计算均方误差值 。 反馈了具有均方误差值中的最小均方误差值的组合的索引。

公开(公告)号：US07356090B2

公开(公告)日：2008-04-08

申请号：US10691903

申请日：2003-10-23

申请人： Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung

发明人： Chan-Soo Hwang ,  Seung-Hoon Nam ,  Yung-Soo Kim ,  Jae-Hak Chung

IPC分类号： H04L27/00 ,  H04L1/02 ,  H04B7/02 ,  H04B1/38

CPC分类号： H04L1/0054 ,  H04L1/0618

摘要： An apparatus uses transmission antenna diversity to compensate for fading. An encoder according to a first embodiment forms 4 combinations each including 3 symbols so that 4 input symbols should be transmitted only once at each antenna and each time interval, and delivers the combinations to the 3 transmission antennas for 4 time intervals, and two or more symbols selected from the 4 input symbols are phase-rotated by predetermined phase values before being transmitted via the transmission antennas. An encoder according to a second embodiment forms 3 combinations each including 3 symbols so that 3 input symbols should be transmitted only once at each antenna and each time interval, and delivers the combinations to the 3 transmission antennas for 3 time intervals, and two or more symbols selected from the 3 input symbols are phase-rotated by predetermined phase values before being transmitted via the transmission antennas. In this way, the apparatus secures a maximum diversity order and copes with fast fading by reducing transmission latency.

摘要翻译： 一种装置使用发射天线分集来补偿衰落。 根据第一实施例的编码器形成4个组合，每个组合包括3个符号，使得4个输入符号在每个天线和每个时间间隔只应发送一次，并将组合传送到3个发射天线4个时间间隔，并且两个或更多个 从4个输入符号中选择的符号在经由发送天线发送之前被相位旋转预定相位值。 根据第二实施例的编码器形成3个组合，每个组合包括3个符号，使得3个输入符号在每个天线和每个时间间隔只应发送一次，并且将这3个组合传送到3个发射天线3个时间间隔，并且两个或更多个 从3个输入符号中选择的符号在经由发送天线发送之前被相位旋转预定相位值。 以这种方式，设备确保最大分集顺序，并通过减少传输延迟来应对快速衰落。

公开(公告)号：US20080075207A1

公开(公告)日：2008-03-27

申请号：US11773257

申请日：2007-07-03

申请人： Chan-Soo HWANG ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Chan-Soo HWANG ,  Yung-Soo Kim ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H03D1/04

CPC分类号： H04L1/065 ,  H04L1/0069 ,  H04L1/0625 ,  H04L1/0631

摘要： A mobile communication system includes at least three transmission antennas of first to third transmission antennas, and uses an overlapped antenna scheme for grouping the first and second transmission antennas into a first transmission antenna group and grouping the second and third transmission antennas into a second transmission antenna group. First and second modulators modulate L information bit streams to be transmitted through the first transmission antenna group and output first and second modulation symbol streams. Third and fourth modulators modulate L other information bit streams to be transmitted through the second transmission antenna group and output third and fourth symbol streams. First to fourth puncturers puncture at least one modulation symbol in a predetermined position among the first to fourth modulation symbol streams. A multiplexer transmits a modulation symbol stream output from the first puncturer through the first transmission antenna, transmits modulation symbol streams output from the second and third puncturers through the second transmission antenna after summation, and transmits a modulation symbol stream output from the third puncturer through the third transmission antenna.

摘要翻译： 移动通信系统包括第一至第三发射天线的至少三个发射天线，并且使用重叠的天线方案将第一和第二发射天线分组成第一发射天线组，并将第二和第三发射天线分组成第二发射天线 组。 第一和第二调制器调制通过第一发送天线组发送的L个信息比特流并输出第一和第二调制符号流。 第三和第四调制器调制通过第二发送天线组发送的另外的信息比特流并输出第三和第四符号流。 第一至第四穿孔器在第一至第四调制符号流中的预定位置中至少刺穿一个调制符号。 复用器通过第一发送天线发送从第一穿孔器输出的调制符号流，在求和之后通过第二发送天线发送从第二和第三穿孔器输出的调制符号流，并且从第三穿孔器输出的调制符号流通过 第三发射天线。

公开(公告)号：US20060093066A1

公开(公告)日：2006-05-04

申请号：US11266793

申请日：2005-11-04

申请人： Hong-Sil Jeong ,  Chan-Byoung Chae ,  Sung-Ryul Yun ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Hong-Sil Jeong ,  Chan-Byoung Chae ,  Sung-Ryul Yun ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H04B7/06

CPC分类号： H04L1/0009 ,  H04L1/0001 ,  H04L1/0026 ,  H04L1/0606 ,  H04L1/0643

摘要： A transmitter for maximizing coding gain by transmitting an input symbol sequence through a plurality of transmit antennas method according to feedback CQIs from a receiver in a 3 Tx-rate 2 communication system. In the transmitter, an S/P converter converts serial modulated data to parallel modulated data. A coder mode decider determines a transmission mode based on the channel quality indicator of each transmit antenna fed back from a receiver. A coder transmits the parallel modulated data through the three transmit antennas according to the determined transmission mode.

摘要翻译： 一种用于通过多个发送天线方法根据来自3个Tx速率2通信系统中的接收机的反馈CQI发送输入符号序列来最大化编码增益的发射机。 在发射机中，S / P转换器将串行调制数据转换为并行调制数据。 编码器模式判定器基于从接收器反馈的每个发送天线的信道质量指示符来确定传输模式。 编码器根据确定的传输模式通过三个发射天线发射并行调制数据。

公开(公告)号：US20060045201A1

公开(公告)日：2006-03-02

申请号：US11213380

申请日：2005-08-26

申请人： Chan-Byoung Chae ,  Won-Il Roh ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Jae-Hak Chung ,  Young-Soo Park ,  Kyun-Byoung Ko ,  Seung-Hoon Nam ,  Young-Ho Jung ,  Chan-Soo Hwang ,  Jeong-Tae Oh ,  Dong-Seek Park

发明人： Chan-Byoung Chae ,  Won-Il Roh ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Jae-Hak Chung ,  Young-Soo Park ,  Kyun-Byoung Ko ,  Seung-Hoon Nam ,  Young-Ho Jung ,  Chan-Soo Hwang ,  Jeong-Tae Oh ,  Dong-Seek Park

IPC分类号： H04L1/02

CPC分类号： H04L1/0643

摘要： An apparatus and method for full-diversity, full-rate space-time block coding in a transmitter using two Tx antennas are provided. An input symbol sequence is STBC-encoded in a predetermined method and transmitted through the two Tx antennas.

摘要翻译： 提供了一种用于使用两个Tx天线的发射机中的全分集，全速率时空块编码的装置和方法。 输入符号序列以预定方法进行STBC编码，并通过两个Tx天线发送。