公开(公告)号：US10763994B2

公开(公告)日：2020-09-01

申请号：US13543108

申请日：2012-07-06

申请人： Han-Ju Kim ,  Chae-Man Lim ,  Min-Goo Kim ,  Jong-Han Lim ,  Hyuk-Joon Kwon ,  Jung-Won Lee

发明人： Han-Ju Kim ,  Chae-Man Lim ,  Min-Goo Kim ,  Jong-Han Lim ,  Hyuk-Joon Kwon ,  Jung-Won Lee

IPC分类号： H04W4/00 ,  H04L1/00 ,  H04J11/00 ,  H04L25/03 ,  H04W92/20 ,  H04L1/18

摘要： Methods, a Base Station (BS), and a User Equipment (UE) in a wireless communication system for transmitting and receiving control information are provided. The method for transmitting control information by a BS in a wireless communication system includes receiving information related to a signal transmitted by a second BS that the second BS which is a neighboring BS of the first BS, determining whether a second UE using an identical resource to that used by a first UE included in a cell of the first BS exists within a cell of the second BS based on the received information, when the second UE exists, generating control information for controlling a signal transmitted to the second UE by the second BS based on the received information, and transmitting the generated control information to the first UE through a control channel.

公开(公告)号：US09083572B2

公开(公告)日：2015-07-14

申请号：US13291490

申请日：2011-11-08

申请人： Joo Han Kim ,  Chae Man Lim

发明人： Joo Han Kim ,  Chae Man Lim

IPC分类号： H04K1/10 ,  H04L27/28 ,  H04L25/02

CPC分类号： H04L25/022 ,  H04L25/0224

摘要： A method and apparatus for estimating a channel efficiently though pilot subcarrier signal transformation and noise reduction in the mobile communication system are provided. The apparatus includes a time domain transformer for transforming received pilot subcarrier signals to time domain signals, a noise reducer for reducing noises of the time domain signals, a frequency domain transformer for transforming the noise-reduced time domain signals to frequency domain signals, and a final channel estimator for estimating channel values of data subcarriers received using the frequency domain signals. The channel estimation method and apparatus of improves performance with the reduction of computational complexity.

摘要翻译： 提供了一种通过导频子载波信号变换和噪声降低来有效地估计信道的方法和装置。 该装置包括用于将接收到的导频子载波信号变换为时域信号的时域变换器，用于减少时域信号噪声的降噪器，用于将噪声降低的时域信号变换为频域信号的频域变换器，以及 用于估计使用频域信号接收的数据子载波的信道值的最终信道估计器。 信道估计方法和装置通过降低计算复杂度来提高性能。

公开(公告)号：US08724685B2

公开(公告)日：2014-05-13

申请号：US13278487

申请日：2011-10-21

申请人： Young-Min Ki ,  Byonghyo Shim ,  Jong-Yoon Hwang ,  Seung-Hwan Won ,  Chae-Man Lim

发明人： Young-Min Ki ,  Byonghyo Shim ,  Jong-Yoon Hwang ,  Seung-Hwan Won ,  Chae-Man Lim

IPC分类号： H03H7/30

CPC分类号： H04L25/03891 ,  H04B1/7097 ,  H04B7/0413 ,  H04B7/0848 ,  H04L1/0618 ,  H04L25/03968

摘要： An apparatus and a method for interference cancellation in a Multiple Input Multiple Output (MIMO) wireless communication system. The method for interference cancellation includes equalizing first reception signals received through two or more reception antennas to estimate transmission signals transmitted through two or more transmission antennas, generating two or more second reception signals in which a mutual interference between the transmission signals is removed from the first reception signals by using the estimated transmission signals, independently equalizing the generated two or more second reception signals, and combining the independently equalized two or more second reception signals to estimate a transmission signal in which an interference is removed.

摘要翻译： 一种用于多输入多输出（MIMO）无线通信系统中的干扰消除的装置和方法。 用于干扰消除的方法包括均衡通过两个或更多个接收天线接收的第一接收信号，以估计通过两个或更多个发送天线发送的传输信号，生成两个或更多个第二接收信号，其中从第一个发送信号中去除传输信号之间的相互干扰 通过使用估计的传输信号接收信号，独立地均衡所生成的两个或更多个第二接收信号，并组合独立均衡的两个或更多个第二接收信号，以估计干扰被去除的传输信号。

公开(公告)号：US08706051B2

公开(公告)日：2014-04-22

申请号：US11700403

申请日：2007-01-31

申请人： Soo-Jin Park ,  Chae-Man Lim

发明人： Soo-Jin Park ,  Chae-Man Lim

IPC分类号： H04B1/40

CPC分类号： H03J7/065

摘要： Provided is a device and a method for adjusting a loop filter gain in an automatic frequency controller, which can allow the automatic frequency controller to operate while maintaining an optimal performance. The device includes a velocity estimator for estimating a change in velocity in accordance with a movement of a terminal; a loop filter gain controller for controlling a loop filter gain in accordance with a change in velocity received from the velocity estimator; and a loop filter gain unit for multiplying a loop filter gain received from the loop filter gain controller and a frequency error for output. Further, there is provided a method for adjusting a loop filter gain in an automatic frequency controller, having the steps of: estimating a change in velocity in accordance with a movement of a terminal; adjusting a loop filter gain in accordance with the estimated change in velocity; and multiplying the adjusted loop filter value and a frequency error for output.

摘要翻译： 提供了一种用于调整自动频率控制器中的环路滤波器增益的装置和方法，其可以允许自动频率控制器在保持最佳性能的同时进行操作。 该装置包括用于根据终端的移动来估计速度变化的速度估计器; 环路滤波器增益控制器，用于根据从速度估计器接收的速度变化来控制环路滤波器增益; 以及环路滤波器增益单元，用于将从环路滤波器增益控制器接收的环路滤波器增益与用于输出的频率误差相乘。 此外，提供了一种用于调整自动频率控制器中的环路滤波器增益的方法，具有以下步骤：根据终端的移动来估计速度变化; 根据估计的速度变化调整环路滤波器增益; 并将调整后的环路滤波器值与频率误差相乘以进行输出。

公开(公告)号：US08483264B2

公开(公告)日：2013-07-09

申请号：US12984193

申请日：2011-01-04

申请人： Chae-Man Lim ,  Ho-Il Kim ,  Kyung-Ha Lee

发明人： Chae-Man Lim ,  Ho-Il Kim ,  Kyung-Ha Lee

IPC分类号： H03H7/40 ,  H04B1/10

CPC分类号： H04L25/0214 ,  H04L25/0216 ,  H04L25/0224 ,  H04L25/03012

摘要： An apparatus and a method for improving performance of an equalizer in a wireless communication system are provided. The apparatus of a reception end includes a search unit and an estimator. The search unit determines power values of respective taps inside a window based on a signal received via a pilot channel, and classifies the taps into one or more meaningful taps and one or more noise taps. The estimator allocates one or more 1-tap channel estimators to the one or more meaningful taps, and determines a channel estimation vector based on a channel estimation value of the one or more meaningful taps determined by the one or more 1-tap channel estimators.

摘要翻译： 提供了一种用于提高无线通信系统中的均衡器的性能的装置和方法。 接收端的装置包括搜索单元和估计器。 搜索单元基于经由导频信道接收到的信号来确定窗口内的各个抽头的功率值，并将该抽头分类成一个或多个有意义的抽头和一个或多个噪声抽头。 估计器将一个或多个1抽头信道估计器分配给一个或多个有意义的抽头，并且基于由一个或多个1抽头信道估计器确定的一个或多个有意义的抽头的信道估计值来确定信道估计向量。

公开(公告)号：US20110170588A1

公开(公告)日：2011-07-14

申请号：US12984193

申请日：2011-01-04

申请人： Chae-Man LIM ,  Ho-Il KIM ,  Kyung-Ha LEE

发明人： Chae-Man LIM ,  Ho-Il KIM ,  Kyung-Ha LEE

IPC分类号： H04L27/01

CPC分类号： H04L25/0214 ,  H04L25/0216 ,  H04L25/0224 ,  H04L25/03012

摘要： An apparatus and a method for improving performance of an equalizer in a wireless communication system are provided. The apparatus of a reception end includes a search unit and an estimator. The search unit determines power values of respective taps inside a window based on a signal received via a pilot channel, and classifies the taps into one or more meaningful taps and one or more noise taps. The estimator allocates one or more 1-tap channel estimators to the one or more meaningful taps, and determines a channel estimation vector based on a channel estimation value of the one or more meaningful taps determined by the one or more 1-tap channel estimators.

摘要翻译： 提供了一种用于提高无线通信系统中的均衡器的性能的装置和方法。 接收端的装置包括搜索单元和估计器。 搜索单元基于经由导频信道接收到的信号来确定窗口内的各个抽头的功率值，并将该抽头分类成一个或多个有意义的抽头和一个或多个噪声抽头。 估计器将一个或多个1抽头信道估计器分配给一个或多个有意义的抽头，并且基于由一个或多个1抽头信道估计器确定的一个或多个有意义的抽头的信道估计值来确定信道估计向量。

公开(公告)号：US07397784B2

公开(公告)日：2008-07-08

申请号：US10681104

申请日：2003-10-09

申请人： Dong-Ryeol Ryu ,  Seong-Kyu Hwang ,  Jae-Hawk Lee ,  Jeoung-Gil Lee ,  Chae-Man Lim

发明人： Dong-Ryeol Ryu ,  Seong-Kyu Hwang ,  Jae-Hawk Lee ,  Jeoung-Gil Lee ,  Chae-Man Lim

IPC分类号： H04J3/00

CPC分类号： H04B1/7085 ,  H04B1/7113 ,  H04B1/7117

摘要： An apparatus and method of receiving multi-path signals in a direct sequence Code Division Multiple Access (CDMA) mobile communication system is disclosed. Timing control signals from respective fingers are collected, and relations among positions of time delays where the respective fingers intend to perform a demodulation are analyzed. If it is determined that the time delay position for a specified finger approaches the time delay position of the finger allocated with an adjacent multi-path as close as a threshold value, the distance between the time delay positions is compulsorily kept as the threshold value. This can be effected by making the timing control signal of the finger allocated with the adjacent multi-path be equally used in the specified finger.

摘要翻译： 公开了一种在直接序列码分多址（CDMA）移动通信系统中接收多径信号的装置和方法。 收集来自各个手指的定时控制信号，分析各个手指进行解调的时间延迟的位置之间的关系。 如果确定指定手指的时间延迟位置接近分配有相邻多路径的手指的时间延迟位置接近阈值，则强制将时间延迟位置之间的距离保持为阈值。 这可以通过在指定的手指中均等地使用分配有相邻多路径的手指的定时控制信号来实现。

公开(公告)号：US08483305B2

公开(公告)日：2013-07-09

申请号：US12467765

申请日：2009-05-18

申请人： Inkyu Lee ,  Sung-Hyun Moon ,  Chae-Man Lim

发明人： Inkyu Lee ,  Sung-Hyun Moon ,  Chae-Man Lim

IPC分类号： H04L1/02

CPC分类号： H04B7/0417

摘要： Methods and apparatus for spatial multiplexing in a closed-loop Multi Input Multi Output (MIMO) system are provided. In a method of operating a receiver in an MIMO system, a signal transmitted by a transmitter is received. Blockwise-Orthogonalized Spatial Multiplexing (B-OSM) is performed on the received signal. Feedback information determined by performing the B-OSM on the received signal is fed back to the transmitter.

摘要翻译： 提供了一种闭环多输入多输出（MIMO）系统中空间复用的方法和装置。 在MIMO系统中操作接收机的方法中，接收由发射机发送的信号。 对接收到的信号执行块向正交空间复用（B-OSM）。 通过对接收到的信号执行B-OSM确定的反馈信息被反馈给发送器。

公开(公告)号：US20120114085A1

公开(公告)日：2012-05-10

申请号：US13291490

申请日：2011-11-08

申请人： Joo Han KIM ,  Chae Man LIM

发明人： Joo Han KIM ,  Chae Man LIM

IPC分类号： H04B1/10

CPC分类号： H04L25/022 ,  H04L25/0224

摘要： A method and apparatus for estimating a channel efficiently though pilot subcarrier signal transformation and noise reduction in the mobile communication system are provided. The apparatus includes a time domain transformer for transforming received pilot subcarrier signals to time domain signals, a noise reducer for reducing noises of the time domain signals, a frequency domain transformer for transforming the noise-reduced time domain signals to frequency domain signals, and a final channel estimator for estimating channel values of data subcarriers received using the frequency domain signals. The channel estimation method and apparatus of improves performance with the reduction of computational complexity.

摘要翻译： 提供了一种通过导频子载波信号变换和噪声降低来有效地估计信道的方法和装置。 该装置包括用于将接收到的导频子载波信号变换为时域信号的时域变换器，用于减少时域信号噪声的降噪器，用于将噪声降低的时域信号变换为频域信号的频域变换器，以及 用于估计使用频域信号接收的数据子载波的信道值的最终信道估计器。 信道估计方法和装置通过降低计算复杂度来提高性能。

公开(公告)号：US20120087406A1

公开(公告)日：2012-04-12

申请号：US13270770

申请日：2011-10-11

申请人： Chae Man LIM ,  Ho II KIM ,  Young Min KI

发明人： Chae Man LIM ,  Ho II KIM ,  Young Min KI

IPC分类号： H04B1/10 ,  H04L27/01

CPC分类号： H04L5/0026 ,  H04J11/004 ,  H04J11/005 ,  H04L25/03038 ,  H04L25/03305

摘要： A device and method is provided for iterative inter-cell interference cancellation and channel equalization in the mobile communication system. A downlink receiver of a mobile communication system according to the present invention includes a channel estimator for estimating channel impulse response of a selected cell from channel signals of respective cells; an equalizer for equalizing the channel impulse response output by the channel estimator using an equalization coefficient; a despreader for generating a symbol observation value per code channel by despreading the output of the equalizer with a code of the selected cell; and a cell interference estimator for estimating a symbol signal power and noise power of a data code channel from the symbol observation value and generates the estimated MMSE as a chip level regeneration sample.

摘要翻译： 提供了一种用于移动通信系统中的迭代小区间干扰消除和信道均衡的装置和方法。 根据本发明的移动通信系统的下行链路接收机包括：信道估计器，用于从各个小区的信道信号估计所选小区的信道脉冲响应; 均衡器，用于使用均衡系数均衡由信道估计器输出的信道脉冲响应; 解扩器，用于通过使用所选择的单元的代码解扩展均衡器的输出来产生每个代码通道的符号观察值; 以及小区干扰估计器，用于从码元观测值估计数据码信道的符号信号功率和噪声功率，并生成估计的MMSE作为芯片级再生样本。