公开(公告)号：US08442448B2

公开(公告)日：2013-05-14

申请号：US11772325

申请日：2007-07-02

Applicant: Sung-Jin Kim ,  Yong-Xing Zhou ,  Ho-Jin Kim ,  Jung-Hoon Suh ,  Chang-Soon Park

Inventor： Sung-Jin Kim ,  Yong-Xing Zhou ,  Ho-Jin Kim ,  Jung-Hoon Suh ,  Chang-Soon Park

IPC: H04B1/00

CPC classification number: H04B7/0632 ,  H04B7/0404 ,  H04B7/0417 ,  H04B7/0452 ,  H04B17/309

Abstract: An apparatus and method for transmitting and/or receiving data in a closed-loop multi-antenna system, the method of receiving data including: acquiring CQIs of data streams by channel estimation of a received signal; selecting at least one CQI from among the acquired CQIs; calculating a common CQI using the acquired CQIs; generating feedback information with the at least one CQI, the common CQI, and an index of a data stream with the at least one CQI; and transmitting the feedback information to a transmitter.

Abstract translation: 一种用于在闭环多天线系统中发送和/或接收数据的装置和方法，所述接收数据的方法包括：通过接收信号的信道估计来获取数据流的CQI; 从所获取的CQI中选择至少一个CQI; 使用所获取的CQI来计算公共CQI; 利用所述至少一个CQI产生反馈信息，所述公共CQI以及具有所述至少一个CQI的数据流的索引; 并将反馈信息发送到发射机。

公开(公告)号：US07941186B2

公开(公告)日：2011-05-10

申请号：US11782629

申请日：2007-07-24

Applicant: Myeon-Kyun Cho ,  Sung-Jin Kim ,  Ho-Jin Kim ,  Cheol-Woo You

Inventor： Myeon-Kyun Cho ,  Sung-Jin Kim ,  Ho-Jin Kim ,  Cheol-Woo You

IPC: H04M1/00 ,  H04W4/00 ,  H04B7/216

CPC classification number: H04W72/085 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0697 ,  H04L1/0026

Abstract: An apparatus and method for scheduling a multiuser and a single user in a Multiple Input Multiple Output (MIMO) system are provided. The method for scheduling a multiuser and a single user at BS in MIMO system includes determining ratios of MultiUser-MIMO (MU-MIMO) chunks and Single User-MIMO (SU-MIMO) chunks to allocation chunks, determining the MU-MIMO chunks in the determined ratio and the remaining chunks as the SU-MIMO chunks, transmitting chunk information relating to the determined chunks to one or more Mobile Stations (MSs), and, when Channel Quality Information (CQI) feedback information relating to the determined MU-MIMO chunks and the determined SU-MIMO chunks is received from the MSs, allocating chunks and streams for MU-MIMO/SU-MIMO to users who maximize overall capacity using the CQI feedback information.

Abstract translation: 提供了一种用于在多输入多输出（MIMO）系统中调度多用户和单个用户的装置和方法。 在MIMO系统中在BS处调度多用户和单个用户的方法包括：将多用户MIMO（MU-MIMO）块和单用户MIMO（SU-MIMO）块的比率确定为分组块，确定MU-MIMO块中的MU-MIMO块 确定的比率和剩余的块作为SU-MIMO块，将与所确定的块相关的块信息发送到一个或多个移动站（MS），以及当与确定的MU-MIMO相关的信道质量信息（CQI）反馈信息 块，并且从MS接收确定的SU-MIMO块，将用于MU-MIMO / SU-MIMO的块和流分配给使用CQI反馈信息最大化总体容量的用户。

公开(公告)号：US07894505B2

公开(公告)日：2011-02-22

申请号：US11785743

申请日：2007-04-19

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

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

IPC: H04B1/00

CPC classification number: H04B7/0626 ,  H04L1/0026

Abstract: An apparatus and method for selecting an effective channel in a multi-user MIMO system are provided, in which a receiver receives pilot signals from a transmitter, determines channel information indicating an antenna offering the best quality among a plurality of antennas using the pilot signals, and generates feedback information with the channel information, and the transmitter receives feedback information from a plurality of receivers, generates a channel matrix using the feedback information, and transmits data simultaneously to the plurality of receivers using the channel matrix.

Abstract translation: 提供了一种用于在多用户MIMO系统中选择有效信道的装置和方法，其中接收机从发射机接收导频信号，使用导频信号确定指示在多个天线中提供最佳质量的天线的信道信息， 并且生成具有信道信息的反馈信息，并且发送器从多个接收器接收反馈信息，使用反馈信息生成信道矩阵，并且使用信道矩阵同时向多个接收机发送数据。

公开(公告)号：US20070286304A1

公开(公告)日：2007-12-13

申请号：US11802775

申请日：2007-05-24

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

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

IPC: H04Q7/00 ,  H04B7/02 ,  H04L1/02

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：US20070160162A1

公开(公告)日：2007-07-12

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: H04L1/02

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：US20060120478A1

公开(公告)日：2006-06-08

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: H04L1/02

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：US07675988B2

公开(公告)日：2010-03-09

申请号：US11180264

申请日：2005-07-13

Applicant: Ho-Jin Kim ,  Ju-Ho Lee ,  Kwang-Bok Lee ,  Hyoung-Woon Park ,  Ho Yang ,  Pandharipande Ashish ,  Sung-Jin Kim

Inventor： Ho-Jin Kim ,  Ju-Ho Lee ,  Kwang-Bok Lee ,  Hyoung-Woon Park ,  Ho Yang ,  Pandharipande Ashish ,  Sung-Jin Kim

IPC: H04B7/02

CPC classification number: H04B7/0617 ,  H04B7/061 ,  H04B7/0691 ,  H04L1/0003 ,  H04L1/0009 ,  H04W52/262

Abstract: An apparatus and method for performing beamforming or transmitting a plurality of bit streams output through Adaptive Modulation and Coding (AMC) via a plurality of transmission antennas in a base station using a multi-antenna scheme. The apparatus and method include classifying the plurality of transmission antennas into a plurality of transmission antenna groups; selecting one of the transmission antenna groups depending on a group selection signal being fed back from a mobile station; and outputting each of the bit streams to its associated transmission antenna among the transmission antennas constituting the selected transmission antenna group.

Abstract translation: 一种用于通过使用多天线方案的基站中的多个发送天线执行波束成形或发送通过自适应调制和编码（AMC）输出的多个比特流的装置和方法。 该装置和方法包括将多个发射天线分类成多个发射天线组; 根据从移动台反馈的组选择信号选择发送天线组中的一个; 并且在构成所选择的发送天线组的发送天线之间将每个比特流输出到其相关的发送天线。

公开(公告)号：US20080096488A1

公开(公告)日：2008-04-24

申请号：US11645415

申请日：2006-12-26

Applicant: Myeon-Gyun Cho ,  Sung-Jin Kim ,  Ho-Jin Kim ,  In-Soo Hwang

Inventor： Myeon-Gyun Cho ,  Sung-Jin Kim ,  Ho-Jin Kim ,  In-Soo Hwang

IPC: H04B1/00 ,  H04B1/02

CPC classification number: H04B7/0417 ,  H04B7/0632

Abstract: For data transmission/reception in a communication system, a transmitter precodes data to be transmitted via at least two antennas, with use of at least one precoding matrix of a predetermined rank, and transmits the precoded data to a receiver. A receiver receives a signal which is precoded with a precoding matrix of a predetermined rank, detects the precoding matrix, calculates a sum rate corresponding to the detected precoding matrix, and feeds back quality information on a channel formed between a transmitter and the receiver when the calculated sum rate falls within a predetermined rank among sum rates calculated for all precoding matrixes.

Abstract translation: 对于通信系统中的数据发送/接收，发送器利用至少一个预定等级的预编码矩阵，经由至少两个天线来对数据进行发送，并将预编码的数据发送到接收机。 接收机接收用预定秩的预编码矩阵预编码的信号，检测预编码矩阵，计算与检测到的预编码矩阵相对应的和速率，并且当发送机与接收机之间形成的信道上的质量信息反馈时 计算出的和速率落入针对所有预编码矩阵计算的总和速率之内的预定等级。

公开(公告)号：US20080043865A1

公开(公告)日：2008-02-21

申请号：US11802568

申请日：2007-05-23

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

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

IPC: H04K1/10

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：US20070249401A1

公开(公告)日：2007-10-25

申请号：US11702907

申请日：2007-02-06

Applicant: Sung-Jin Kim ,  Myeon-Gyun Cho ,  Ho-Jin Kim

Inventor： Sung-Jin Kim ,  Myeon-Gyun Cho ,  Ho-Jin Kim

IPC: H04M1/00

CPC classification number: H04B7/0452 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0689 ,  H04B7/0691

Abstract: A method is provided a method for transmitting data in a MIMO communication system. The method includes receiving feedback information including channel quality information of transmission antennas from terminals; selecting one of a multi-user mode and a single user mode according to the channel quality information; extracting information for the selected mode from the feedback information; selecting at least one terminal and a preceding matrix of at least one transmission antenna through which data is transmitted according to the extracted information and the selected mode; and transmitting data using the selected precoding matrix and information of the selected terminal.

Abstract translation: 提供了一种在MIMO通信系统中发送数据的方法。 该方法包括从终端接收包括发送天线的信道质量信息的反馈信息; 根据信道质量信息选择多用户模式和单用户模式之一; 从反馈信息中提取所选模式的信息; 根据所提取的信息和所选择的模式，选择数据被发送的至少一个发射天线的至少一个终端和前一矩阵; 以及使用所选择的预编码矩阵和所选择的终端的信息来发送数据。