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：US20080125051A1

公开(公告)日：2008-05-29

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: H04B17/00

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：US20050084030A1

公开(公告)日：2005-04-21

申请号：US10965087

申请日：2004-10-14

Applicant: Yong-Xing Zhou ,  Jong-Han Kim

Inventor： Yong-Xing Zhou ,  Jong-Han Kim

IPC: H04B7/04 ,  H04L1/06 ,  H04L25/02 ,  H04L27/26 ,  H04K1/10

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04L1/0618 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2656

Abstract: A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit antennas generates a base preamble sequence including a CP and an orthogonal sequence. If Q≦a predetermined number M, a preamble sequence for a kth antenna is S(t−(k−1)T/Q). If Q>M and k≦M, the preamble sequence transmitted for the kth antenna is S(t−(k−1)T/Q). If Q>M and k>M, the preamble sequence for the kth antenna is (−1)(ps−1)S(t−(k−1)T/Q). Here, S(t) is the orthogonal sequence, T is the period of the orthogonal sequence, and PS is an index indicating a transmission period of the preamble sequence. The preamble sequences are at least twice transmitted from the Q transmit antennas.

Abstract translation: 提供了一种用于在MIMO-OFDM通信系统中发送用于帧同步和信道估计的前同步码的方法和装置。 使用Q发射天线的OFDM通信系统产生包括CP和正交序列的基本前同步码序列。 如果Q <=预定数M，第k个天线的前同步码序列是S（t-（k-1）T / Q）。 如果Q> M且k <= M，则对于第k个天线发送的前同步码序列是S（t-（k-1）T / Q）。 如果Q> M且k> M，则第k个天线的前同步码序列为（-1）（S-1）S（t-（k-1）T / Q）。 这里，S（t）是正交序列，T是正交序列的周期，PS是表示前导码序列的发送周期的索引。 前导码序列至少从Q个发射天线发射两次。

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：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：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：US07702028B2

公开(公告)日：2010-04-20

申请号：US10965087

申请日：2004-10-14

Applicant: Yong-Xing Zhou ,  Jong-Han Kim

Inventor： Yong-Xing Zhou ,  Jong-Han Kim

IPC: H04B7/02

CPC classification number: H04L25/0226 ,  H04B7/0413 ,  H04L1/0618 ,  H04L27/2607 ,  H04L27/2613 ,  H04L27/2628 ,  H04L27/2656

Abstract: A method and apparatus for transmitting a preamble for frame synchronization and channel estimation in a MIMO-OFDM communication system are provided. An OFDM communication system using Q transmit antennas generates a base preamble sequence including a CP and an orthogonal sequence. If Q≦ a predetermined number M, a preamble sequence for a kth antenna is S(t−(k−1)T/M). If Q>M and k≦M the preamble sequence transmitted for the kth antenna is S(t−(k−1)T/M). If Q>M and k>M, the preamble sequence for the kth antenna is (−1)(PS−1)S(t−(k−M−1)T/M). Here, S(t) is the orthogonal sequence, T is the period of the orthogonal sequence, and PS is an index indicating a transmission period of the preamble sequence. The preamble sequences are at least twice transmitted from the Q transmit antennas.

Abstract translation: 提供了一种用于在MIMO-OFDM通信系统中发送用于帧同步和信道估计的前同步码的方法和装置。 使用Q发射天线的OFDM通信系统产生包括CP和正交序列的基本前同步码序列。 如果Q＆nlE; 预定数量M，第k个天线的前同步码序列是S（t-（k-1）T / M）。 如果Q> M且k＆nlE; M，则对于第k个天线发送的前导序列是S（t-（k-1）T / M）。 如果Q> M和k> M，则第k个天线的前同步码序列为（-1）（PS-1）S（t-（k-M-1）T / M）。 这里，S（t）是正交序列，T是正交序列的周期，PS是表示前导码序列的发送周期的索引。 前导码序列至少从Q个发射天线发射两次。

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：US20070147291A1

公开(公告)日：2007-06-28

申请号：US11590095

申请日：2006-10-31

Applicant: Hyo-Sun Hwang ,  Yong-Xing Zhou ,  Dong-Jun Lee ,  Jung-Hoon Suh ,  Kyung-Hun Jang ,  Young-Soo Kim ,  Junfeng Jiang ,  Pingyi Fan ,  Zhigang Cao

Inventor： Hyo-Sun Hwang ,  Yong-Xing Zhou ,  Dong-Jun Lee ,  Jung-Hoon Suh ,  Kyung-Hun Jang ,  Young-Soo Kim ,  Junfeng Jiang ,  Pingyi Fan ,  Zhigang Cao

IPC: H04Q7/00

CPC classification number: H04L47/10 ,  H04L47/115 ,  H04L47/14 ,  H04L47/27 ,  H04L47/283 ,  H04W24/06

Abstract: A method and apparatus for estimating available throughput of a fixed node in a mobile node of a communication network. The communication network includes fixed nodes connected to a router connected to at least one foreign network and mobile nodes connected to the fixed nodes. A second mobile node is selected from among mobile nodes connected to a fixed node whose available throughput is estimated in a first mobile node. An idle slot interval of the second mobile node connected to the fixed node is set. A transmission probability is measured in one slot interval of the second mobile node through an average of set idle slot intervals. Transmission information of the second mobile node is acquired using the measured transmission probability. The available throughput of the fixed node is estimated using the acquired transmission information.

Abstract translation: 一种用于估计通信网络的移动节点中的固定节点的可用吞吐量的方法和装置。 通信网络包括连接到连接到至少一个外部网络的路由器和连接到固定节点的移动节点的固定节点。 从连接到在第一移动节点中估计可用吞吐量的固定节点的移动节点中选择第二移动节点。 连接到固定节点的第二移动节点的空闲时隙间隔被设置。 通过平均设置的空闲时隙间隔在第二移动节点的一个时隙间隔中测量传输概率。 使用所测量的传输概率来获取第二移动节点的传输信息。 使用获取的传输信息来估计固定节点的可用吞吐量。