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1. 发明申请

US20060098754A1 Beam and power allocation method for MIMO communication system 审中-公开
标题翻译： MIMO通信系统的波束和功率分配方法
公开(公告)号：US20060098754A1
公开(公告)日：2006-05-11
申请号：US11256251
申请日：2005-10-21
申请人： Sung-Jin Kim , Ye-Hoon Lee , Ho-Jin Kim , Kwang-Bok Lee
发明人： Sung-Jin Kim , Ye-Hoon Lee , Ho-Jin Kim , Kwang-Bok Lee
IPC分类号： H04B7/02
CPC分类号： H04B7/0617 , H04B7/0417 , H04B7/0426 , H04B7/0443 , H04B7/0626 , H04B7/0691 , H04W52/42
摘要： A beam and power allocation method for a MIMO system transmitting multiple data streams from a transmitter having a plurality of transmit antennas to a receiver having at least two receive antennas, the transmit antennas being grouped based on feedback information from the receiver, includes obtaining covariance matrices for respective transmit antenna group, and allocating beam and power to the transmit antenna groups according to the covariance matrices of the respective antenna groups. The power allocation method can be adapted to various partial beamforming techniques by generalizing the optimization problem as a function of transmit covariance matrices.
摘要翻译：一种用于MIMO系统的波束和功率分配方法，所述MIMO系统从具有多个发射天线的发射机向具有至少两个接收天线的接收机发射多个数据流，所述发射天线基于来自所述接收机的反馈信息分组，包括获得协方差矩阵并且根据各个天线组的协方差矩阵将波束和功率分配给发射天线组。功率分配方法可以通过将优化问题概括为发射协方差矩阵的函数来适应各种部分波束成形技术。

2. 发明申请

US20050267370A1 Velocity estimation apparatus and method 审中-公开
标题翻译：速度估计装置及方法
公开(公告)号：US20050267370A1
公开(公告)日：2005-12-01
申请号：US11141178
申请日：2005-05-31
申请人： Goo-Hyun Park , Ye-Hoon Lee , Eung-Sun Kim , Jong-Hyeuk Lee , Ho-Jin Kim , Dae-Sik Hong
发明人： Goo-Hyun Park , Ye-Hoon Lee , Eung-Sun Kim , Jong-Hyeuk Lee , Ho-Jin Kim , Dae-Sik Hong
IPC分类号： H04B7/26 , A61B8/02 , G01S11/10
CPC分类号： G01S11/10
摘要： A velocity estimation apparatus and method for a communication system including a transmitter for transmitting signals through wireless channels and a receiver for receiving the signals and restoring data. The apparatus includes a pilot signal detector for detecting a pilot signal from a received signal, a maximum Doppler frequency estimator for estimating a maximum Doppler frequency using the pilot signal detected by the pilot signal detector, and an adaptive type band-limit filter having a limit band based on a previous output value of the maximum Doppler frequency estimator. By using the pilot signal, which is removed with noise, while passing through the band-limit filter, it is possible to precisely estimate a maximum Doppler frequency, and thereby estimate the velocity.
摘要翻译：一种用于通信系统的速度估计装置和方法，包括用于通过无线信道发送信号的发射机和用于接收信号和恢复数据的接收机。该装置包括用于从接收信号检测导频信号的导频信号检测器，用于使用由导频信号检测器检测的导频信号来估计最大多普勒频率的最大多普勒频率估计器，以及具有限制的自适应型限幅滤波器基于最大多普勒频率估计器的先前输出值的频带。通过使用在通过带限滤波器时被噪声去除的导频信号，可以精确地估计最大多普勒频率，从而估计速度。

3. 发明申请

US20070202889A1 Method for puncturing a low density parity check code 审中-公开
标题翻译：打孔低密度奇偶校验码的方法
公开(公告)号：US20070202889A1
公开(公告)日：2007-08-30
申请号：US11703520
申请日：2007-02-07
申请人： Dong-Ho Kim , Cheol-Woo You , Yung-Soo Kim , Ye-Hoon Lee , Keum-Chan Whang , Kwang-Soon Kim , Hyo-Yol Park
发明人： Dong-Ho Kim , Cheol-Woo You , Yung-Soo Kim , Ye-Hoon Lee , Keum-Chan Whang , Kwang-Soon Kim , Hyo-Yol Park
IPC分类号： H04Q7/20
CPC分类号： H03M13/1185 , H03M13/116 , H03M13/6362
摘要： Provided is a method for puncturing a Low Density Parity Check (LDPC) code that is expressed in a factor graph configured by a bit node and a check node connected to an edge and is decoded by a parity check matrix with an information region and a parity region. A mother code with a code rate is generated. Bit nodes configuring the parity region are grouped in a block unit. A transmission code rate and the number of bits to be punctured in the mother code according to the transmission code rate are set. A puncturing process in either the block unit or a bit unit or both is performed according to the transmission code rate. All codes with required code rates can be obtained. The LDPC code puncturing method can be flexibly applied to Hybrid Automatic Repeat Request (H-ARQ) and Incremental Redundancy (IR) systems.
摘要翻译：提供了一种在由比特节点和连接到边缘的校验节点配置的因子图中表示的低密度奇偶校验（LDPC）码的方法，并且由具有信息区域和奇偶校验的奇偶校验矩阵解码地区。生成具有码率的母码。配置奇偶校验区域的位节点以块为单位分组。设定传输码率和根据传输码率在母码中要穿孔的比特数。根据传输码率执行块单元或位单元或两者中的删截处理。可以获得所需的代码率的代码。 LDPC码打孔方法可以灵活地应用于混合自动重传请求（H-ARQ）和增量冗余（IR）系统。

4. 发明申请

US20070101243A1 Method for puncturing a low density parity check code 有权
标题翻译：打孔低密度奇偶校验码的方法
公开(公告)号：US20070101243A1
公开(公告)日：2007-05-03
申请号：US11541749
申请日：2006-10-02
申请人： Dong-Ho Kim , Yung-Soo Kim , Ye-Hoon Lee , Myeon-Gyun Cho , Hyo-Yol Park , Keum-Chan Whang , Kwang-Soon Kim , Jae-Won Kang
发明人： Dong-Ho Kim , Yung-Soo Kim , Ye-Hoon Lee , Myeon-Gyun Cho , Hyo-Yol Park , Keum-Chan Whang , Kwang-Soon Kim , Jae-Won Kang
IPC分类号： H03M13/03
CPC分类号： H03M13/1102 , H03M13/6306 , H03M13/6362
摘要： A method for puncturing a Low Density Parity Check (LDPC). The method includes a) setting a codeword length and the total number of bit nodes to be punctured; b) selecting a check node (or check nodes) with highest priority excluding check nodes completely checked in a current round; c) selecting a bit node (or bit nodes) with a highest priority excluding bit nodes completely checked among bit nodes connected to the selected check node (or check nodes); d) determining whether the selected bit node is a bit node to be punctured, that is, it is not systematic, not set by a puncturing prohibition flag; e) puncturing an associated bit node if the selected bit node is the bit node to be punctured, setting unpunctured bit nodes connected to the selected check node by a puncturing prohibition flag, decreasing the number of remained bit nodes to be punctured by 1 and increasing the number of connected punctured node of associated check node by 1; f) determining whether the number of remaining bits to be punctured is greater than 0; and g) returning to step b) if the number of remaining bits to be punctured is greater than 0, and ending a puncturing process if the number of remaining bits to be punctured is not greater than 0.
摘要翻译：一种用于打孔低密度奇偶校验（LDPC）的方法。该方法包括：a）设置码字长度和要被穿孔的比特节点的总数; b）选择具有最高优先级的校验节点（或校验节点），不包括在当前轮次中完全检查的校验节点; c）选择具有最高优先级的比特节点（或比特节点），不包括连接到所选择的校验节点（或校验节点）的比特节点之间完全检查的比特节点; d）确定所选择的比特节点是否是要被穿孔的比特节点，即，它不是系统的，不被打孔禁止标志设置; e）如果选择的比特节点是要被穿孔的比特节点，则对相关联的比特节点进行穿孔，通过打孔禁止标志来设置连接到所选择的校验节点的未穿孔比特节点，将要被穿孔的剩余比特节点的数量减少1并增加相关检查节点的连接穿孔节点数目为1; f）确定要穿孔的剩余比特数是否大于0; 以及g）如果要删除的剩余比特数大于0，则返回到步骤b），并且如果要穿孔的剩余比特数不大于0，则结束打孔处理。

5. 发明申请

US20050180313A1 Apparatus and method for controlling adaptive modulation and coding in an orthogonal frequency division multiplexing communication system 审中-公开
标题翻译：用于在正交频分复用通信系统中控制自适应调制和编码的装置和方法
公开(公告)号：US20050180313A1
公开(公告)日：2005-08-18
申请号：US11002843
申请日：2004-12-02
申请人： Yung-Soo Kim , Ye-Hoon Lee
发明人： Yung-Soo Kim , Ye-Hoon Lee
IPC分类号： H04J4/00 , H04J11/00 , H04L1/00 , H04L5/02 , H04L27/26
CPC分类号： H04L5/0042 , H04L1/0009 , H04L5/0007 , H04L5/0037 , H04L5/0046 , H04L5/006
摘要： In an OFDMA mobile communication system in which a total frequency band is divided into a plurality of sub-carrier bands, for signal transmission, to assign sub-carriers to MSs, a BS divides the total frequency band into L sub-frequency bands. The BS detects the channel condition of each of the MSs and determines a sub-frequency band for each MS according to the channel condition among the L sub-frequency bands. The BS assigns sub-carriers in the determined sub-frequency band at a predetermined sub-carrier spacing to each MS.
摘要翻译：在总频带被划分成多个子载波频带的OFDMA移动通信系统中，为了进行信号传输，为了向MS分配子载波，BS将总频带划分为L个子频带。 BS检测每个MS的信道状况，并根据L个子频带中的信道状况确定每个MS的子频带。 BS以确定的子频带以每个MS以预定的子载波间隔分配子载波。

6. 发明授权

US08155229B2 Apparatus and method for transmitting/receiving a signal in a communication system 有权
标题翻译：用于在通信系统中发送/接收信号的装置和方法
公开(公告)号：US08155229B2
公开(公告)日：2012-04-10
申请号：US11603859
申请日：2006-11-22
申请人： Ye-Hoon Lee , Dong-Ho Kim , Yeheskel Bar-Ness , Jordi Diaz
发明人： Ye-Hoon Lee , Dong-Ho Kim , Yeheskel Bar-Ness , Jordi Diaz
IPC分类号： H04B7/02
CPC分类号： H04L1/0618 , H04L27/2626
摘要： An apparatus is provided for transmitting a signal in a communication system. Upon receipt of an information vector, the apparatus includes converting the information vector into a plurality of sub-information vectors; performing coding and modulation on each of the sub-information vectors according to a corresponding mode thereby generating a modulation symbol; interleaving the modulation symbol generated for each of the sub-information vectors; allocating power to the interleaved modulation symbol for each individual mode; and beamforming the modulation symbols power-allocated for each individual mode, and transmitting the beamforming symbols.
摘要翻译：提供一种用于在通信系统中发送信号的装置。在接收到信息向量时，该装置包括将信息向量转换成多个子信息向量; 根据对应模式对每个子信息向量执行编码和调制，从而生成调制符号; 交织对每个子信息向量生成的调制符号; 为每个单独模式分配交织调制符号的功率; 以及波束成形为每个单独模式功率分配的调制符号，以及发送波束形成符号。

7. 发明授权

US07391817B2 Method and apparatus for determining antenna weight in a closed-loop transmit diversity system 有权
标题翻译：用于确定闭环发射分集系统中的天线权重的方法和装置
公开(公告)号：US07391817B2
公开(公告)日：2008-06-24
申请号：US10858617
申请日：2004-06-02
申请人： Ye-Hoon Lee
发明人： Ye-Hoon Lee
IPC分类号： H04L1/02
CPC分类号： H04B7/0634
摘要： A method and apparatus for adaptively determining weights for transmission antennas according to a channel condition in a closed-loop transmit diversity system using a plurality of transmission antennas. The antenna weights are determined using variation of channel characteristics based on time and space, to thereby improve bit error rate performance. Parameters for fixing average transmission power per symbol according to the statistical channel characteristics for symbol energy and additive white Gaussian nose energy are previously determined to estimate channel characteristics. The antenna weights are determined using the parameters and channel gains estimated upon reception of data symbols.
摘要翻译：一种用于根据使用多个发送天线的闭环发射分集系统中的信道条件自适应地确定发射天线的权重的方法和装置。使用基于时间和空间的信道特性的变化确定天线权重，从而提高误码率性能。预先确定根据符号能量和加性白高斯鼻能的统计通道特性固定每符号的平均发射功率的参数，以估计信道特性。使用在接收数据符号时估计的参数和信道增益来确定天线权重。

8. 发明申请

US20070127592A1 Apparatus and method for transmitting/receiving a signal in a communication system 审中-公开
标题翻译：用于在通信系统中发送/接收信号的装置和方法
公开(公告)号：US20070127592A1
公开(公告)日：2007-06-07
申请号：US11603857
申请日：2006-11-22
申请人： Ye-Hoon Lee , Dong-Ho Kim , Yeheskel Bar-Ness , Kodzovi Acolatse
发明人： Ye-Hoon Lee , Dong-Ho Kim , Yeheskel Bar-Ness , Kodzovi Acolatse
IPC分类号： H04L27/00 , H04K1/10
CPC分类号： H04L1/0041 , H04L1/0056 , H04L1/0643 , H04L1/0668 , H04L1/1607 , H04L1/1812 , H04L1/1893
摘要： An apparatus for transmitting a signal in a communication system includes: MT number of transmission antennas; a space-time encoder for generating MT number of transmission symbol streams by space-time encoding MT number of modulation symbol streams in accordance with a space-time encoding scheme determined by a predetermined control, and transmitting each of the MT transmission symbol streams through a corresponding transmission antenna from among the MT transmission antennas; and a controller for determining the space-time encoding scheme based on an iteration number of transmission, which indicates the number of times by which an information data bit stream corresponding to the MT modulation symbol streams has been transmitted.
摘要翻译：用于在通信系统中发送信号的装置包括：发送天线的数量; 空间编码器，用于根据确定的时空编码方案，通过调制符号流的空时编码M N T N个数来产生传输符号流的数目通过预定的控制，并且从多个发送天线之间通过相应的发送天线发送每个M SUB传输符号流; 以及控制器，用于基于传送的迭代次数来确定空时编码方案，所述迭代次数表示已经发送了与调制符号流对应的信息数据比特流的次数。

9. 发明申请

US20060268814A1 Apparatus and method for scheduling resources in a multiantenna system 有权
标题翻译：多天线系统中调度资源的装置和方法
公开(公告)号：US20060268814A1
公开(公告)日：2006-11-30
申请号：US11392407
申请日：2006-03-29
申请人： Jae-Hak Chung , Ji-Won Kang , Ye-Hoon Lee , Seung-Hoon Nam , Chung-Yong Lee , Hak-Ju Lee
发明人： Jae-Hak Chung , Ji-Won Kang , Ye-Hoon Lee , Seung-Hoon Nam , Chung-Yong Lee , Hak-Ju Lee
IPC分类号： H04B7/212
CPC分类号： H04W72/1257 , H04B7/0452 , H04L1/0003 , H04L1/0009 , H04L5/0075 , H04W72/1231
摘要： Provided is a scheduling apparatus and method for allocating resources to individual users in a multiantenna system. An upper layer determines resources to allocate to respective users one a long term, and provides the ratio to a scheduler. Then the scheduler determines coefficients appropriate for the provided ratio. On the assumption that a statistical channel characteristic for a user is constant for a predetermined time, the scheduler determines a channel capacity average and a standard deviation for the user. The scheduler schedules resource allocation for individual users according to the channel capacity average and standard deviation values, which are the statistical characteristic values, and instantaneous channel capacity fed back for the individual users, together with the found coefficients.
摘要翻译：提供了一种用于在多天线系统中向各个用户分配资源的调度装置和方法。上层确定长期分配给相应用户的资源，并将比例提供给调度器。然后调度器确定适合所提供的比率的系数。假设用户的统计信道特性在预定时间内是恒定的，则调度器确定用户的信道容量平均值和标准偏差。调度器根据作为统计特征值的信道容量平均值和标准差值，以及针对各个用户反馈的瞬时信道容量，连同所找到的系数，为个体用户调度资源分配。

10. 发明授权

US08064428B2 Method and apparatus for ordering retransmissions in an NxM MIMO system 有权
标题翻译：用于在NxM MIMO系统中排序重传的方法和装置
公开(公告)号：US08064428B2
公开(公告)日：2011-11-22
申请号：US11503289
申请日：2006-08-11
申请人： Yeheskel Bar-Ness , Ye-Hoon Lee , Dong-Ho Kim , Guillem Malagarriga
发明人： Yeheskel Bar-Ness , Ye-Hoon Lee , Dong-Ho Kim , Guillem Malagarriga
IPC分类号： H04J3/24
CPC分类号： H04B7/0669 , H04B7/0623 , H04B7/0697 , H04B7/0848 , H04L1/0009 , H04L1/0625 , H04L1/0668 , H04L1/1607 , H04L1/1812 , H04L1/1819 , H04L1/1845 , H04L1/1867
摘要： A method is provided for ordering retransmissions in a Multi-Input Multi-Output (MIMO) system using N×M antennas. A transmitter splits a coded data stream into N sub-packets, and transmits the N sub-packets to a receiver via N transmission antennas. The receiver removes interferences of the N sub-packets received via M reception antennas, and independently decodes the interference-removed sub-packets. The receiver transmits an acknowledgement (ACK) or a negative acknowledgement (NACK) to the transmitter based on errors included in the decoded sub-packets. Upon receipt of the NACK, the transmitter retransmits to the receiver a sub-packet retransmission using ordering based on an Alamouti space-time coding scheme.
摘要翻译：提供了一种使用N×M个天线在多输入多输出（MIMO）系统中排序重传的方法。发送器将编码数据流分解成N个子分组，并且经由N个发送天线将N个子分组发送到接收机。接收器去除经由M个接收天线接收到的N个子分组的干扰，并且独立地解码干扰消除的子分组。接收机基于解码的子分组中包含的错误向发射机发送确认（ACK）或否定确认（NACK）。在接收到NACK时，发射机基于Alamouti时空编码方案使用排序向接收机重发子分组。

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