公开(公告)号：US08098746B2

公开(公告)日：2012-01-17

申请号：US11763019

申请日：2007-06-14

Applicant: Sung-Jin Kim ,  Ho-Jin Kim

Inventor： Sung-Jin Kim ,  Ho-Jin Kim

IPC: H04L27/28

CPC classification number: H04L1/0026 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/06 ,  H04L25/0204

Abstract: An apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system. A receiver receives a plurality of data streams from a plurality of transmit antennas of a transmitter, generates Channel Quality Information (CQIs) of channels that carry data streams transmitted from at least two transmit antenna allocated to the receiver among the plurality of transmit antennas, and transmits the CQIs to the transmitter. For the CQI generation, the receiver generates a channel matrix through channel estimation of the received data streams, generates a reception beamforming matrix from the channel matrix including only components of the data streams transmitted from the allocated transmit antennas, and calculates the CQIs using the channel matrix, the reception beamforming matrix, and a total signal-to-noise ratio (SNR) obtained through the channel estimation.

Abstract translation: 一种用于在闭环多天线系统中发送/接收数据的装置和方法。 接收机从发射机的多个发射天线接收多个数据流，产生载波从多个发射天线中分配给接收机的至少两个发射天线发射的数据流的信道的信道质量信息（CQI），以及 将CQI发送到发送机。 对于CQI生成，接收器通过对接收到的数据流的信道估计来生成信道矩阵，从仅包含从所分配的发送天线发送的数据流的分量的信道矩阵生成接收波束成形矩阵，并使用信道 矩阵，接收波束形成矩阵以及通过信道估计获得的总信噪比（SNR）。

公开(公告)号：US20110122971A1

公开(公告)日：2011-05-26

申请号：US11725019

申请日：2007-03-16

Applicant: Ho-Jin Kim ,  Sung-Jin Kim ,  Jianjun Li ,  Yong-Xing Zhou

Inventor： Ho-Jin Kim ,  Sung-Jin Kim ,  Jianjun Li ,  Yong-Xing Zhou

IPC: H04L27/00

CPC classification number: H04B7/0417 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0645 ,  H04B7/0647 ,  H04B7/0663 ,  H04L1/0026 ,  H04L1/003 ,  H04L5/0023 ,  H04L25/0204 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802

Abstract: A method for transmitting/receiving feedback information in a multi-antenna system using a closed-loop scheme supporting multiple users, and a feedback system supporting the same. Multiple feedback protocol scenarios are predefined on the basis of communication environments affecting feedback information configurations. The feedback information is transmitted in a feedback protocol scenario determined by a communication environment. The feedback information is constructed with information required by the communication environment.

Abstract translation: 一种用于使用支持多个用户的闭环方案在多天线系统中发送/接收反馈信息的方法，以及支持多个用户的反馈系统。 多反馈协议方案是在影响反馈信息配置的通信环境的基础上预先定义的。 在由通信环境确定的反馈协议场景中传送反馈信息。 反馈信息由通信环境所需的信息构成。

公开(公告)号：US07769390B2

公开(公告)日：2010-08-03

申请号：US11059962

申请日：2005-02-17

Applicant: Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

Inventor： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

IPC: H04W72/00

CPC classification number: H04B7/0604 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0822 ,  H04B7/0854

Abstract: A method for transmitting and receiving data in a multiuser Multiple-Input Multiple-Output (MIMO) system including a base station connected to a plurality of user equipments. In the method, each of the user equipments separately calculates channel capacity information using a linear reception scheme and a nonlinear reception scheme, and feeds back the calculated channel capacity information to the base station. The base station separately calculates system capacities using at least two different antenna scheduling schemes based on the channel capacity information fed back from the user equipments, and allocates antennas to the user equipments using a selected antenna scheduling scheme having higher system capacity out of the two antenna scheduling schemes.

Abstract translation: 一种用于在包括连接到多个用户设备的基站的多用户多输入多输出（MIMO）系统中发送和接收数据的方法。 在该方法中，每个用户设备使用线性接收方式和非线性接收方式分别计算信道容量信息，并将计算出的信道容量信息反馈给基站。 基站基于从用户设备反馈的信道容量信息，使用至少两个不同的天线调度方案分别计算系统容量，并且使用在两个天线中具有较高系统容量的选定的天线调度方案向用户设备分配天线 调度方案

公开(公告)号：US07764931B2

公开(公告)日：2010-07-27

申请号：US11840918

申请日：2007-08-17

Applicant: Sung-Jin Kim ,  Ho-Jin Kim ,  Jianjun Li ,  Jung-Hoon Suh ,  Chang-Soon Park

Inventor： Sung-Jin Kim ,  Ho-Jin Kim ,  Jianjun Li ,  Jung-Hoon Suh ,  Chang-Soon Park

IPC: H04B1/00 ,  H04B7/00

CPC classification number: H04L1/0026 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L5/0023 ,  H04L5/006 ,  H04L5/0064 ,  H04L25/03343 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04W28/06

Abstract: A method of transmitting/receiving feedback information representing channel quality in a MIMO-OFDM system, in which a receiver measures channel qualities of signals transmitted on a plurality of subbands through a plurality of transmitting antennas by a transmitter, selects a predetermined number of subbands having a highest transmission performance based on the measured channel qualities and preceding information, determines at least one subband group with a maximum rate from among the selected subbands and the preceding information associated with the at least one subband group, and transmits feedback information to the transmitter, the feedback information including channel quality information about the at least one subband group and the associated preceding information.

Abstract translation: 一种在MIMO-OFDM系统中发送/接收表示信道质量的反馈信息的方法，其中接收机通过发射机测量通过多个发射天线在多个子带上发送的信号的信道质量，选择预定数量的子带，其具有 基于所测量的信道质量和先前信息的最高传输性能，从所选择的子带中的最大速率和与所述至少一个子带组相关联的先前信息确定至少一个子带组，并将反馈信息发送到发射机， 所述反馈信息包括关于所述至少一个子带组的信道质量信息和所述相关联的先前信息。

公开(公告)号：US07746947B2

公开(公告)日：2010-06-29

申请号：US11274662

申请日：2005-11-15

Applicant: Sung-Jin Kim ,  Ho-Jin Kim ,  Kwang-Bok Lee ,  Ki-Ho Kim ,  Hyoung-Woon Park ,  Jae-Hak Chung ,  Chan-Byoung Chae ,  Won-Il Roh

Inventor： Sung-Jin Kim ,  Ho-Jin Kim ,  Kwang-Bok Lee ,  Ki-Ho Kim ,  Hyoung-Woon Park ,  Jae-Hak Chung ,  Chan-Byoung Chae ,  Won-Il Roh

IPC: H04B7/04

CPC classification number: H04B7/0617 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0452 ,  H04B7/0634

Abstract: A multiple-input multiple-output (MIMO) communication system is provided for communication between a transmission apparatus having a plurality of transmission antennas and a reception apparatus having a plurality of reception antennas. The reception apparatus performs singular value decomposition (SVD) on channel information for a channel established to the transmission apparatus, and feeds back the SVD-decomposed channel information to the transmission apparatus. The transmission apparatus receives the SVD-decomposed channel information from the reception apparatus, performs QR decomposition on the received SVD-decomposed channel information, and sets multiple transmission antennas to be allocated to the channel, thereby performing beamforming.

Abstract translation: 提供了一种多输入多输出（MIMO）通信系统，用于具有多个发送天线的发送装置与具有多个接收天线的接收装置之间的通信。 接收装置对发送装置建立的信道的信道信息进行奇异值分解（SVD），并将SVD分解信道信息反馈给发送装置。 发送装置从接收装置接收SVD分解信道信息，对所接收的SVD分解信道信息进行QR分解，并设定要分配给信道的多个发送天线，从而进行波束形成。

公开(公告)号：US07689177B2

公开(公告)日：2010-03-30

申请号：US11802568

申请日：2007-05-23

Applicant: Ho-Jin Kim ,  Seung-Young Park ,  David J. Love ,  Jianjun Li ,  Sung-Jin Kim ,  Il-Han Kim

Inventor： Ho-Jin Kim ,  Seung-Young Park ,  David J. Love ,  Jianjun Li ,  Sung-Jin Kim ,  Il-Han Kim

IPC: H04B1/06

CPC classification number: H04L1/0026 ,  H04B7/0417 ,  H04B7/0639

Abstract: A method and apparatus for transmitting/receiving feedback information in a multi-user multi-antenna system and a system supporting the same are provided, in which all possible combinations are created using column vectors included in a precoding codebook, column vectors are correlated in each of the combinations, column vectors comprising correlations exceeding a reference threshold are designated as similar vectors, at least two similar vector sets are formed with the similar vectors, and feedback information is generated based on the at least two similar vector sets and transmitted.

Abstract translation: 提供了一种用于在多用户多天线系统中发送/接收反馈信息的方法和装置以及支持该多用户多天线系统的系统，其中使用包括在预编码码本中的列向量来创建所有可能的组合，列向量在每个 将包括超过参考阈值的相关性的列向量指定为相似的向量，则使用相似的向量形成至少两个相似的向量集合，并且基于至少两个相似的向量集合生成反馈信息并发送。

公开(公告)号：US20050192019A1

公开(公告)日：2005-09-01

申请号：US11059962

申请日：2005-02-17

Applicant: Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

Inventor： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

IPC: H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/155 ,  H04J99/00 ,  H04M1/00

CPC classification number: H04B7/0604 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0822 ,  H04B7/0854

Abstract: A method for transmitting and receiving data in a multiuser Multiple-Input Multiple-Output (MIMO) system including a base station connected to a plurality of user equipments. In the method, each of the user equipments separately calculates channel capacity information using a linear reception scheme and a nonlinear reception scheme, and feeds back the calculated channel capacity information to the base station. The base station separately calculates system capacities using at least two different antenna scheduling schemes based on the channel capacity information fed back from the user equipments, and allocates antennas to the user equipments using a selected antenna scheduling scheme having higher system capacity out of the two antenna scheduling schemes.

Abstract translation: 一种用于在包括连接到多个用户设备的基站的多用户多输入多输出（MIMO）系统中发送和接收数据的方法。 在该方法中，每个用户设备使用线性接收方式和非线性接收方式分别计算信道容量信息，并将计算出的信道容量信息反馈给基站。 基站基于从用户设备反馈的信道容量信息，使用至少两个不同的天线调度方案分别计算系统容量，并且使用在两个天线中具有较高系统容量的选定的天线调度方案向用户设备分配天线 调度方案

公开(公告)号：US07995670B2

公开(公告)日：2011-08-09

申请号：US11802775

申请日：2007-05-24

Applicant: Ho-Jin Kim ,  Il-Han Kim ,  David J. Love ,  Seung-Young Park ,  Sung-Jin Kim ,  Yong-Xing Zhou

Inventor： Ho-Jin Kim ,  Il-Han Kim ,  David J. Love ,  Seung-Young Park ,  Sung-Jin Kim ,  Yong-Xing Zhou

IPC: H04B7/02

CPC classification number: H04B7/0452 ,  H04L1/0002 ,  H04L25/03343 ,  H04L2025/03426

Abstract: Provided are a data transmitting and receiving method for a multiple-input multiple-output (MIMO) communication system, and a transmitter and a receiver using the method. Accordingly, since precoding matrices of a codebook is constituted using a rotation matrix, expansion of the codebook is easy, and since each of the precoding matrices is determined according to the number of transmit antennas, the codebook is systematically created according to a system. In addition the codebook can be applied to even a correlated channel, and the minimum distance between precoding matrices can advantageously be maximized.

Abstract translation: 提供了一种用于多输入多输出（MIMO）通信系统的数据发送和接收方法，以及使用该方法的发送器和接收器。 因此，由于使用旋转矩阵构成码本的预编码矩阵，因此码本的扩展容易，并且由于根据发送天线的数量来确定每个预编码矩阵，所以根据系统系统地创建码本。 此外，码本可以应用于甚至相关信道，并且预编码矩阵之间的最小距离可以有利地被最大化。

公开(公告)号：US07729442B2

公开(公告)日：2010-06-01

申请号：US11590015

申请日：2006-10-31

Applicant: Sung-Jin Kim ,  Ho-Jin Kim ,  Ju-Ho Lee ,  Hwan-Joon Kwon ,  Jianjun Li ,  Yong-Xing Zhou ,  In-Soo Hwang ,  Kwang-Bok Lee

Inventor： Sung-Jin Kim ,  Ho-Jin Kim ,  Ju-Ho Lee ,  Hwan-Joon Kwon ,  Jianjun Li ,  Yong-Xing Zhou ,  In-Soo Hwang ,  Kwang-Bok Lee

IPC: H04L27/00

CPC classification number: H04B7/0452 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0643 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/06 ,  H04L25/03343 ,  H04L2025/03426

Abstract: A method and system are provided for transmitting data in a multiple-input multiple-output (MIMO) communication system. A receiver sets the number of sub-streams of each column of a preceding matrix with respect to all precoding matrices of channels formed between the receiver and a transmitter and measures channel states with respect to sub-stream combinations whose number is equivalent to the number of set sub-streams. The receiver transmits data according to channel states to the transmitter after measuring the channel states with respect to the sub-stream combinations and antenna combinations representing sub-streams used upon data transmission of all the precoding matrices.

Abstract translation: 提供了一种用于在多输入多输出（MIMO）通信系统中传输数据的方法和系统。 接收机相对于在接收机和发射机之间形成的信道的所有预编码矩阵来设置前一矩阵的每列的子流的数量，并且针对子流组合测量相对于子数组合数的子流组合的信道状态 设置子流。 在测量关于子流组合的子信道状态的信道状态和表示在所有预编码矩阵的数据传输时使用的子流的天线组合之后，接收机根据信道状态向发射机发送数据。

公开(公告)号：US20060209764A1

公开(公告)日：2006-09-21

申请号：US11368746

申请日：2006-03-06

Applicant: Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

Inventor： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

IPC: H04Q7/00

CPC classification number: H04W72/1231 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0689 ,  H04L1/0003 ,  H04L1/0015 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0675

Abstract: In multiuser Multiple-Input Multiple-Output (MIMO) systems in which a base station performs scheduling on the basis of channel information fed back from a plurality of terminals, the user scheduling method of the present invention includes calculating a metric for scheduling the users using the channel information, selecting one of at least two preinstalled scheduling schemes according to the metric, and performing the scheduling with the selected scheduling scheme. The user scheduling method of the present invention performs scheduling with one of TDMA- and STMA-based scheduling schemes which show maximum capacity in different channel environments, such that the system capacity can be optimally maintained even when the channel environment is changed.

Abstract translation: 在多用户多输入多输出（MIMO）系统中，基站基于从多个终端反馈的信道信息进行调度，本发明的用户调度方法包括：计算用于使用 所述信道信息，根据所述度量选择至少两个预先安排的调度方案中的一个，并且使用所选择的调度方案来执行所述调度。 本发明的用户调度方法利用在不同信道环境中显示最大容量的基于TDMA和STMA的调度方案之一进行调度，使得即使当信道环境改变时也可以最佳地维护系统容量。