公开(公告)号：US20100309996A1

公开(公告)日：2010-12-09

申请号：US12739351

申请日：2008-12-28

申请人： Dong Guk Lim ,  Su Nam Kim ,  Bin Chul Ihm ,  Jae Wan Kim

发明人： Dong Guk Lim ,  Su Nam Kim ,  Bin Chul Ihm ,  Jae Wan Kim

IPC分类号： H04L27/28

CPC分类号： H04B7/024 ,  H04B7/0417 ,  H04B7/0621 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0632 ,  H04B7/0639

摘要： A method of transmitting information necessary for performing collaborative multi input multi output (MIMO) operation between a mobile station and a base station in order to improve reception performance of the mobile station in a multi-cell environment is provided. The mobile station may receive a feedback channel for the collaborative MIMO which is allocated by a serving base station and transmit a collaborative MIMO indicator including information indicating that the collaborative MIMO is started to the serving base station. In addition, the mobile station may transmit the feedback information of each of the serving base station and a collaborative base station to the serving base station through the feedback channel, and the serving base station may transmit the feedback information to the collaborative base station via a backbone network. The mobile station may receive the collaborative MIMO supported by the serving base station and the collaborative base station.

摘要翻译： 提供了一种在移动台和基站之间传送执行协同多输入多输出（MIMO）操作所必需的信息以提高移动台在多小区环境中的接收性能的方法。 移动台可以接收由服务基站分配的协作MIMO的反馈信道，并发送包括表示协作MIMO开始的服务基站的信息的协作MIMO指示符。 此外，移动台可以通过反馈信道将服务基站和协作基站中的每一个的反馈信息发送到服务基站，并且服务基站可以经由以下操作将反馈信息发送到协作基站 骨干网。 移动台可以接收由服务基站和协作基站支持的协作MIMO。

公开(公告)号：US20100208610A1

公开(公告)日：2010-08-19

申请号：US12709364

申请日：2010-02-19

申请人： Bin Chul Ihm ,  Su Nam Kim ,  Ja Ho Koo ,  Dong Guk Lim ,  Wook Bong Lee ,  Jae Wan Kim

发明人： Bin Chul Ihm ,  Su Nam Kim ,  Ja Ho Koo ,  Dong Guk Lim ,  Wook Bong Lee ,  Jae Wan Kim

IPC分类号： H04J1/16

CPC分类号： H04W16/10 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0062 ,  H04L5/0073 ,  H04W16/30 ,  H04W72/082

摘要： A method of transmitting and receiving feedback information in a multi-cell based wireless communication system using FFR, a mobile station apparatus therefore and a base station apparatus therefore are disclosed. A mobile station is able to obtain FFR configuration information including configuration information on at least one frequency partition to which a corresponding FFR is applied per cell ID. And, the mobile station is able to transmit PMI information to a serving base station using the obtained FFR configuration information. In this case, the PMI information is specifically restricted or recommended by the mobile station among PMIs (precoding matrix indexes) used by at least one neighbor cell in an allocated specific frequency partition.

摘要翻译： 因此，公开了一种在使用FFR的基于多小区的无线通信系统中发送和接收反馈信息的方法，因此，移动站装置和基站装置。 移动站能够获得包括对每个小区ID应用相应的FFR的至少一个频率分区的配置信息的FFR配置信息。 并且，移动站能够使用获得的FFR配置信息向服务基站发送PMI信息。 在这种情况下，由所分配的特定频率分区中的至少一个相邻小区使用的PMI（预编码矩阵索引）中的移动台具体限制或推荐PMI信息。

公开(公告)号：US07760824B2

公开(公告)日：2010-07-20

申请号：US11788411

申请日：2007-04-20

申请人： Jae-Wan Kim ,  Young-Jin Kim ,  Jae-Heon Lee

发明人： Jae-Wan Kim ,  Young-Jin Kim ,  Jae-Heon Lee

IPC分类号： H04L27/08

CPC分类号： H03G3/3052 ,  H03G1/04

摘要： An analog baseband circuit includes first and second DC (direct current) offset cancellers and an offset canceller controller. The first DC offset canceller includes a first filter and a first PGA (programmable gain amplifier) with a first gain step for eliminating a first dc component from an input baseband signal. The second DC offset canceller includes a second filter and a second PGA with a second gain step less than the first gain step for eliminating a second dc component from an output of the first DC offset canceller. The offset canceller controller controls the first and second filters to operate in a fast mode when a gain of the first PGA is changed.

摘要翻译： 模拟基带电路包括第一和第二DC（直流）偏移消除器和偏移消除器控制器。 第一DC偏移消除器包括第一滤波器和第一PGA（可编程增益放大器），其具有用于从输入基带信号消除第一直流分量的第一增益步骤。 第二DC偏移消除器包括第二滤波器和具有小于第一增益步长的第二增益步长的第二PGA，用于从第一DC偏移消除器的输出消除第二直流分量。 当第一PGA的增益改变时，偏移消除器控制器控制第一和第二滤波器以快速模式操作。

公开(公告)号：US20100110914A1

公开(公告)日：2010-05-06

申请号：US12448846

申请日：2008-03-21

申请人： Jin Young Chun ,  Bin Chul Ihm ,  Jin Hyuk Jung ,  Jae Wan Kim ,  Sung Ho Park

发明人： Jin Young Chun ,  Bin Chul Ihm ,  Jin Hyuk Jung ,  Jae Wan Kim ,  Sung Ho Park

IPC分类号： H04L12/26

CPC分类号： H04L1/0026 ,  H04L1/0029 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006

摘要： A method of transmitting a channel quality indicator (CQI) includes obtaining CQIs for each of a plurality of sub-bands, a sub-band comprising a plurality of sub-carriers, dividing the plurality of sub-bands into a plurality of layers according to a CQI of a sub-band, a layer comprising at least one sub-band, obtaining a representative value of a representative layer, the representative layer including a sub-band having maximum CQI and transmitting the representative value of the representative layer. Signaling overhead due to CQI feedback can be reduced.

摘要翻译： 发送信道质量指示符（CQI）的方法包括获得针对多个子带中的每一个的CQI，包括多个子载波的子带，根据所述多个子载波将所述多个子带划分成多个层 子带的CQI，包含至少一个子带的层，获得代表层的代表值，所述代表层包括具有最大CQI的子带，并发送代表层的代表值。 可以减少由CQI反馈引起的信令开销。

公开(公告)号：US20090207822A1

公开(公告)日：2009-08-20

申请号：US12318437

申请日：2008-12-29

申请人： Jae Wan Kim ,  Wook Bong Lee ,  Su Nam Kim ,  Dong Guk Lim ,  Bin Chul Ihm

发明人： Jae Wan Kim ,  Wook Bong Lee ,  Su Nam Kim ,  Dong Guk Lim ,  Bin Chul Ihm

IPC分类号： H04W4/00 ,  H04L27/00

CPC分类号： H04W72/02 ,  H04B7/024 ,  H04B7/026 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0495 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04B17/345 ,  H04L1/0026 ,  H04L25/03904 ,  H04W24/02

摘要： A method for reducing inter-cell interference and a method for transmitting a signal by a collaborative MIMO scheme, in a communication system having a multi-cell environment are disclosed. An example of a method for transmitting, by a mobile station, precoding information in a collaborative MIMO communication system includes determining a precoding matrix set including precoding matrices of one more base stations including a serving base station, based on signal strength of the serving base station, and transmitting information about the precoding matrix set to the serving base station. A mobile station in an edge of a cell performs a collaborative MIMO mode or inter-cell interference mitigation mode using the information about the precoding matrix set collaboratively with neighboring base stations.

摘要翻译： 公开了一种在具有多小区环境的通信系统中减少小区间干扰的方法和通过协作MIMO方案发送信号的方法。 用于由移动站发送协作MIMO通信系统中的预编码信息的方法的示例包括基于服务基站的信号强度来确定包括包括服务基站的多个基站的预编码矩阵的预编码矩阵集合 并且将关于预编码矩阵集的信息发送到服务基站。 小区边缘的移动台使用与相邻基站协作的关于预编码矩阵集的信息执行协同MIMO模式或小区间干扰减轻模式。

公开(公告)号：US07564922B2

公开(公告)日：2009-07-21

申请号：US11290534

申请日：2005-12-01

申请人： Jae-Wan Kim ,  Jong-Dae Bae

发明人： Jae-Wan Kim ,  Jong-Dae Bae

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H03F1/30 ,  H03B5/24 ,  H03B2200/0058 ,  H04B2001/0416 ,  H04L27/368

摘要： An RF transmitter includes a modulating circuit adapted to modulating an RF signal, an output amplifier adapted to amplify the modulated RF signal; an auto tuner generating a tuning voltage that varies in accordance with operating temperature fluctuations and/or manufacturing process variances, and a reference current generating circuit adapted to generate a reference current in response to the tuning voltage.

摘要翻译： RF发射机包括适于调制RF信号的调制电路，适于放大经调制的RF信号的输出放大器; 产生根据工作温度波动和/或制造工艺方差变化的调谐电压的自动调谐器，以及适于响应于调谐电压产生参考电流的参考电流产生电路。

公开(公告)号：US20080205533A1

公开(公告)日：2008-08-28

申请号：US11858082

申请日：2007-09-19

申请人： Moon Il Lee ,  Bin Chul Ihm ,  Jae Wan Kim ,  Sung Ho Park ,  Wook Bong Lee

发明人： Moon Il Lee ,  Bin Chul Ihm ,  Jae Wan Kim ,  Sung Ho Park ,  Wook Bong Lee

IPC分类号： H04L27/28

CPC分类号： H04B7/0671 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/1816 ,  H04L5/0023 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426 ,  Y02D50/10

摘要： A method of transmitting data using a plurality of subcarriers in a multi-antenna wireless communication system is disclosed. More specifically, the method includes receiving feedback information from a mobile station (MS), performing channel encoding and modulation independently on user data to be transmitted by each antenna using the received feedback information, determining a phase shift-based precoding matrix for increasing a phase angle of the user data by a fixed amount, and performing precoding using the determined phase shift-based precoding matrix on the user data.

摘要翻译： 公开了一种在多天线无线通信系统中使用多个子载波发送数据的方法。 更具体地说，该方法包括从移动台（MS）接收反馈信息，对使用接收到的反馈信息的每个天线要发送的用户数据独立地进行信道编码和调制，确定用于增加相位的基于相移的预编码矩阵 用户数据的角度固定的量，以及使用所确定的基于相移的预编码矩阵对用户数据执行预编码。

公开(公告)号：US07268886B2

公开(公告)日：2007-09-11

申请号：US10874352

申请日：2004-06-24

申请人： Jae Wan Kim ,  Tae Bong Eom

发明人： Jae Wan Kim ,  Tae Bong Eom

IPC分类号： G01B9/02

CPC分类号： G01B9/02019 ,  G01B9/02056 ,  G01B2290/45 ,  G01B2290/70

摘要： Disclosed herein is a method and apparatus for simultaneously measuring a displacement and angular variations. The method and apparatus of the present invention allows light radiated from a single light source to be placed along a light axis so as to simultaneously measure a distance (displacement) and angular variations that are different physical quantities, so that the displacement and angular variations of the measuring device of a precision measuring apparatus or machining device of a machine tool moved by a stage can be simultaneously measured without an Abbe error.

摘要翻译： 这里公开了用于同时测量位移和角度变化的方法和装置。 本发明的方法和装置允许从单个光源辐射的光沿着光轴放置，以便同时测量不同物理量的距离（位移）和角度变化，使得位移和角度变化 可以在没有阿贝误差的情况下同时测量由载物台移动的机床的精密测量装置或加工装置的测量装置。

公开(公告)号：US20060035617A1

公开(公告)日：2006-02-16

申请号：US11193713

申请日：2005-07-29

申请人： Jae-Wan Kim

发明人： Jae-Wan Kim

IPC分类号： G01S7/40 ,  H04B1/26 ,  H04B15/00

CPC分类号： H04B1/0032 ,  H04B1/28

摘要： An intermediate frequency receiver includes mixers for generating first and second IF signals from a RF signal and local oscillator signals. A magnitude calibration loop adjusts a gain of the first and/or second IF signals generated from the mixers depending on a magnitude difference between the IF signals. The phase calibration loop adjusts a phase of a local oscillator signal before being used at the mixers depending on a phase difference between the IF signals.

公开(公告)号：US20050146316A1

公开(公告)日：2005-07-07

申请号：US11029282

申请日：2005-01-05

申请人： Jae-Wan Kim

发明人： Jae-Wan Kim

IPC分类号： G05F1/10 ,  G05F3/16 ,  G05F3/26

CPC分类号： G05F3/262

摘要： A current reference circuit has a band gap voltage generating circuit, a voltage buffer, a voltage-to-current converting circuit and an auto-tuner. The band gap voltage generating circuit generates a band gap reference voltage. The voltage buffer generates a first bias voltage and a second bias voltage. The voltage-to-current converting circuit generates a source current in response to a tuning voltage. The auto-tuner generates the tuning voltage to maintain a transconductance. Thus, the current reference circuit may automatically adjust the transconductance, so that the current reference circuit may supply the source current that is stable against temperature and process variations.

摘要翻译： 电流基准电路具有带隙电压产生电路，电压缓冲器，电压 - 电流转换电路和自动调谐器。 带隙电压产生电路产生带隙基准电压。 电压缓冲器产生第一偏置电压和第二偏置电压。 电压 - 电流转换电路响应于调谐电压产生电源电流。 自动调谐器产生调谐电压以保持跨导。 因此，电流参考电路可以自动调节跨导，使得电流参考电路可以提供对温度和工艺变化稳定的源电流。