公开(公告)号：US20060209980A1

公开(公告)日：2006-09-21

申请号：US11368726

申请日：2006-03-06

申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Jianjun Li

发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Jianjun Li

IPC分类号： H04L1/02

CPC分类号： H04B7/0452 ,  H04B7/0465 ,  H04B7/061 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0003 ,  H04L1/0675

摘要： The present invention provides the multiuser Multiple-Input Multiple-Output (MIMO) systems with a feedback method which includes measuring, at the terminal, received Signal to Noise Ratios (SNRs) for all transmit antennas, selecting one of precoding matrixes, which has best SNRs, retrieving an index mapped to the selected preceding matrix from a predetermined mapping table, and transmitting the index with the SNRs of the selected precoding matrix. In the present invention, it is possible to reduce feedback information amount without degradation of the sum rate performance of the system since the feedback information is transmitted in a form of index implying appropriate precoding matrix and corresponding SNRs.

公开(公告)号：US20060039494A1

公开(公告)日：2006-02-23

申请号：US11180264

申请日：2005-07-13

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

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

IPC分类号： H04L1/02

CPC分类号： H04B7/0617 ,  H04B7/061 ,  H04B7/0691 ,  H04L1/0003 ,  H04L1/0009 ,  H04W52/262

摘要： An apparatus and method for performing beamforming for 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.

摘要翻译： 一种用于执行波束成形的装置和方法，用于通过使用多天线方案的基站中的多个发送天线发送通过自适应调制和编码（AMC）输出的多个比特流。 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：US20050153659A1

公开(公告)日：2005-07-14

申请号：US10505559

申请日：2003-02-17

申请人： Yong-Suk Lee ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Keun-Chul Hwang

发明人： Yong-Suk Lee ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Keun-Chul Hwang

IPC分类号： H04B7/06 ,  H04B7/26 ,  H04B17/00

CPC分类号： H04B7/0639 ,  H04B7/0617 ,  H04B7/0658

摘要： Provided are a mobile communication apparatus including an antenna array and a mobile communication method. The mobile communication apparatus has a base station and a mobile station. The mobile station measures the downlink characteristics, detects physical space information and approximate long-term information, produces short-term informatio, transforms the short-term information and the physical space information into a feedback signal, and transmits the feedback signal to the base station. The base station receives the feedback signal, extracts weighted information, beamforms dedicated physical channel signals, combines pilot channel signals with the result of the beamforming, and transmits the results of the combinations to the mobile station via the antenna array. The physical space information denotes space information about the location of the mobile station with respect to the base station, and the approximate long-term information denotes long-term information. Accordingly, degradation of the performance of communications caused by a great amount of information to be fed back station can be prevented while keeping a beamforming gain.

摘要翻译： 提供一种包括天线阵列和移动通信方法的移动通信装置。 移动通信装置具有基站和移动台。 移动台测量下行链路特性，检测物理空间信息和近似长期信息，产生短期信息，将短期信息和物理空间信息转换为反馈信号，并将反馈信号发送到基站 。 基站接收反馈信号，提取加权信息，波束形成专用物理信道信号，将导频信道信号与波束形成结果相结合，并通过天线阵列将结果结果发送给移动台。 物理空间信息表示关于移动台相对于基站的位置的空间信息，近似长期信息表示长期信息。 因此，可以在保持波束形成增益的同时防止由大量反馈站信息引起的通信性能的劣化。

公开(公告)号：US07675988B2

公开(公告)日：2010-03-09

申请号：US11180264

申请日：2005-07-13

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

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

IPC分类号： H04B7/02

CPC分类号： H04B7/0617 ,  H04B7/061 ,  H04B7/0691 ,  H04L1/0003 ,  H04L1/0009 ,  H04W52/262

摘要： 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.

摘要翻译： 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：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。

公开(公告)号：US20070160162A1

公开(公告)日：2007-07-12

申请号：US11590015

申请日：2006-10-31

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

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

IPC分类号： H04L1/02

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

摘要： 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.

摘要翻译： 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：US07769390B2

公开(公告)日：2010-08-03

申请号：US11059962

申请日：2005-02-17

申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

IPC分类号： H04W72/00

CPC分类号： H04B7/0604 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0822 ,  H04B7/0854

摘要： 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.

摘要翻译： 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：US20050192019A1

公开(公告)日：2005-09-01

申请号：US11059962

申请日：2005-02-17

申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee

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

CPC分类号： H04B7/0604 ,  H04B7/0452 ,  H04B7/0632 ,  H04B7/0822 ,  H04B7/0854

摘要： 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.

摘要翻译： 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：US08699643B2

公开(公告)日：2014-04-15

申请号：US13325245

申请日：2011-12-14

申请人： Chang Soon Park ,  Jong Ae Park ,  Sung-Jin Kim

发明人： Chang Soon Park ,  Jong Ae Park ,  Sung-Jin Kim

IPC分类号： H04L1/02

CPC分类号： H04L27/06 ,  H04B7/0854 ,  H04B7/0885 ,  H04L25/061

摘要： Provided are an apparatus and method for acquiring a signal to noise ratio (SNR) gain and a diversity gain using multiple antennas for receiving data, and an apparatus for receiving a signal using multiple antennas. The apparatus may receive on-off keying modulated signals through K receiving antennas, detect envelopes with respect to each of the signals received through the K receiving antennas, combine signals generated by performing a linear processing and a nonlinear processing with respect to each of the K detected envelopes, and determine a message value of the on-off keying modulated signals.

摘要翻译： 提供了一种用于使用多个天线来获取信噪比（SNR）增益和分集增益用于接收数据的装置和方法，以及用于使用多个天线接收信号的装置。 该装置可以通过K个接收天线接收开关键控调制信号，检测相对于通过K个接收天线接收到的每个信号的信封，组合通过对K中的每一个进行线性处理和非线性处理而产生的信号 检测到的信封，并确定开关键控调制信号的消息值。

公开(公告)号：US07764931B2

公开(公告)日：2010-07-27

申请号：US11840918

申请日：2007-08-17

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

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

IPC分类号： H04B1/00 ,  H04B7/00

CPC分类号： 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

摘要： 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.

摘要翻译： 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。