公开(公告)号：US08217835B2

公开(公告)日：2012-07-10

申请号：US12660644

申请日：2010-03-02

申请人： Eun Seok Ko ,  Jong-Hyung Kwun ,  Sang-hyun Kim ,  Robert Heath, Jr. ,  Chan-Byoung Chae

发明人： Eun Seok Ko ,  Jong-Hyung Kwun ,  Sang-hyun Kim ,  Robert Heath, Jr. ,  Chan-Byoung Chae

IPC分类号： H01Q3/00

CPC分类号： H04B7/043 ,  H04B7/0452

摘要： A base station is capable of transmitting a signal in a wireless communication network. The base station decides channel state information matrices of respective channels by determining a state of the channels corresponding to respective transmission antennas. The base station calculates transmission beam forming vectors for the respective transmission antennas by a combination of a dot product and a cross product of the channel state information matrices. Thereafter, the base station beam-forms signals for the respective transmission antennas by using the respective transmission beam forming vectors, and transmitting the beam-formed signals.

摘要翻译： 基站能够在无线通信网络中发送信号。 基站通过确定与各个发送天线相对应的信道的状态来确定各信道的信道状态信息矩阵。 基站通过信道状态信息矩阵的点积和交叉乘积的组合来计算各个发送天线的发送波束形成向量。 此后，基站通过使用各个发送波束形成向量波束形成各个发送天线的信号，并发送波束形成的信号。

公开(公告)号：US07764744B2

公开(公告)日：2010-07-27

申请号：US11523278

申请日：2006-09-18

申请人： Soong-Yoon Choi ,  Gun-Chul Hwang ,  Chan-Byoung Chae ,  Seung-Hoon Nam

发明人： Soong-Yoon Choi ,  Gun-Chul Hwang ,  Chan-Byoung Chae ,  Seung-Hoon Nam

IPC分类号： H04B7/02 ,  H04L27/28 ,  H04J7/02 ,  H04J11/00 ,  H04W4/00

CPC分类号： H04L1/0656 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0689 ,  H04L25/0206 ,  H04L25/0224 ,  H04L27/2608

摘要： An apparatus and method for simultaneously providing service to users each having a different number of antennas in a multiple-antenna wireless communication system are provided. The communication method discloses a BS in a wireless communication system that services a first multiple antenna mode using X transmit antennas and a second multiple antenna mode using Y transmit antennas such that (Y>X), the BS determines an MS to be serviced in the second multiple antenna mode and receives a sounding signal from the MS. The BS estimates an uplink channel using the received sounding signal and acquires downlink channel values using estimated uplink channel values. Then the BS services the MS in the second multiple antenna mode using the downlink channel values.

摘要翻译： 提供了一种用于在多天线无线通信系统中同时向具有不同天数的用户提供服务的装置和方法。 该通信方法公开了使用X个发射天线来服务第一多天线模式的无线通信系统中的BS，以及使用Y个发射天线的第二多天线模式，使得（Y> X），BS确定要在 第二多天线模式并从MS接收探测信号。 BS使用接收到的探测信号估计上行链路信道，并且使用估计的上行链路信道值来获取下行链路信道值。 然后BS使用下行链路信道值在第二多天线模式中服务于MS。

公开(公告)号：US07664192B2

公开(公告)日：2010-02-16

申请号：US11247787

申请日：2005-10-11

申请人： Sung-Ryul Yun ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Dong-Seek Park ,  Won-Il Roh ,  Jae-Yoel Kim ,  Pan-Yuh Joo ,  Jeong-Tae Oh ,  Kyun-Byoung Ko

发明人： Sung-Ryul Yun ,  Chan-Byoung Chae ,  Hong-Sil Jeong ,  Dong-Seek Park ,  Won-Il Roh ,  Jae-Yoel Kim ,  Pan-Yuh Joo ,  Jeong-Tae Oh ,  Kyun-Byoung Ko

IPC分类号： H04B7/02

CPC分类号： H04B7/068 ,  H04B7/0848 ,  H04B7/0854 ,  H04L1/0606 ,  H04L1/0668 ,  H04L27/2615 ,  H04L27/2628 ,  H04L27/265

摘要： A transmitter for minimizing a PAPR in OFDM communication system. The transmitter includes: a precoder for coding input symbols so that a signal rotation is generated, and generating a complex vector including the coded symbols; an encoder for performing a frequency-space mapping for the symbols generated as the complex vector according to a predetermined scheme; a random mapper for randomly mapping the symbols for which the frequency-space mapping has been performed on a frequency plane through at least one transmit antenna; an Inverse Fast Fourier Transform (IFFT) unit for performing an IFFT for the symbols for which the frequency-space mapping has been performed; and a gradient algorithm unit for receiving IFFTed signals from the IFFT unit and reducing the PAPR.

摘要翻译： 用于最小化OFDM通信系统中的PAPR的发射机。 发射机包括：预编码器，用于对输入符号进行编码，从而产生信号旋转，并产生包括编码符号的复矢量; 编码器，用于根据预定方案对作为所述复矢量生成的符号执行频率 - 空间映射; 随机映射器，用于通过至少一个发射天线在频率平面上随机映射已经对其进行频率 - 空间映射的符号; 用于对已经执行了频率 - 空间映射的符号执行IFFT的逆快速傅里叶变换（IFFT）单元; 以及用于从IFFT单元接收IFFT信号并减少PAPR的梯度算法单元。

公开(公告)号：US07660607B2

公开(公告)日：2010-02-09

申请号：US11268893

申请日：2005-11-08

申请人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Chan-Byoung Chae ,  Seung-Joo Maeng

发明人： Jeong-Tae Oh ,  Won-Il Roh ,  Kyun-Byoung Ko ,  Jae-Ho Jeon ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Chan-Byoung Chae ,  Seung-Joo Maeng

IPC分类号： H04M1/00 ,  H04B1/00 ,  H04B7/00 ,  H04J11/00

CPC分类号： H04L1/0625 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0643 ,  H04L1/0662 ,  H04L1/0668 ,  H04L1/0687

摘要： Disclosed is a method for using various multiple antenna schemes in a baseband wireless access system is provided. According to the method, a downlink MAP message is constructed in order to support various multiple antenna schemes based on a multiple-input multiple output (MIMO), which is one of the multiple antenna schemes, so that compatibility with exiting MIMO technology having no MIMO feedback can be achieved and overhead occurring in transmission of an MAP information element can be reduced. Further, it is possible to efficiently support spatial multiplexing technology capable of transmitting multiple layers having different modulation and coding in a MIMO system.

摘要翻译： 公开了一种在基带无线接入系统中使用各种多天线方案的方法。 根据该方法，构建下行链路MAP消息以便支持基于作为多个天线方案之一的多输入多输出（MIMO）的各种多天线方案，从而与不具有MIMO的退出MIMO技术的兼容性 可以实现反馈并且可以减少在MAP信息元素的传输中发生的开销。 此外，可以有效地支持能够在MIMO系统中发送具有不同调制和编码的多个层的空间复用技术。

公开(公告)号：US20090252250A1

公开(公告)日：2009-10-08

申请号：US12417426

申请日：2009-04-02

申请人： Robert Wendell Heath, JR. ,  Chan-Byoung Chae

发明人： Robert Wendell Heath, JR. ,  Chan-Byoung Chae

IPC分类号： H04B7/02 ,  H04M1/00

CPC分类号： H04B7/0617 ,  H04B7/0417

摘要： An apparatus and method for beamforming in a Multiple Input Multiple Output (MIMO) wireless communication system are provided. A Base Station (BS) includes a calculator for generating relational expressions between beamforming vectors of Mobile Stations (MSs) using channel information of each MS, for determining beamforming vector candidates of each MS from the relational expressions using generalized Eigen-analysis, and for selecting beamforming vectors for each MS from the beamforming vector candidates, and a plurality of Transmit (Tx) beamformers for performing Tx beamforming on dedicated pilot symbols to be transmitted to each MS using the beamforming vectors for each MS.

摘要翻译： 提供了一种用于多输入多输出（MIMO）无线通信系统中的波束成形的装置和方法。 基站（BS）包括使用每个MS的信道信息来生成移动站（MS）的波束成形向量之间的关系表达式的计算器，用于使用广义特征分析从关系表达式确定每个MS的波束形成向量候选，并且用于选择 波束形成向量候选的每个MS的波束成形向量，以及多个发射（Tx）波束形成器，用于在专用导频符号上执行Tx波束形成，以使用每个MS的波束成形向量发射到每个MS。

公开(公告)号：US07436803B2

公开(公告)日：2008-10-14

申请号：US10341937

申请日：2003-01-14

申请人： Chan-Byoung Chae ,  In-Bum Chang

发明人： Chan-Byoung Chae ,  In-Bum Chang

IPC分类号： H04Q7/00

CPC分类号： H04W36/18 ,  H04W36/30

摘要： A mobile station that determines whether to perform a soft handover in a CDMA mobile communication system and method thereof. The mobile station compares strength of a signal received from a source BTS (Base Transceiver Station) with a prescribed reference value. If the strength of the signal received from the source BTS is larger than the reference value, the mobile station determines whether to perform a soft handover based on a new offset value being smaller than a previous hysteresis no matter how strong a signal received from a target BTS is.

摘要翻译： 一种移动站，其确定是否在CDMA移动通信系统中执行软切换及其方法。 移动台将从源BTS（基站收发台）接收的信号的强度与规定的基准值进行比较。 如果从源BTS接收到的信号的强度大于参考值，则移动台基于新的偏移值小于先前的滞后来确定是否执行软切换，无论信号从目标 BTS是。

公开(公告)号：US20070291638A1

公开(公告)日：2007-12-20

申请号：US11809671

申请日：2007-06-01

申请人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

发明人： Chan-Byoung Chae ,  Sung-Ryul Yun ,  Hong-Sil Jeong ,  Won-Il Roh ,  Jeong-Tae Oh ,  Kyun-Byoung Ko ,  Young-Ho Jung ,  Seung-Hoon Nam ,  Jae-Hak Chung

IPC分类号： H04J11/00

CPC分类号： H04B7/0669 ,  H04L1/0618

摘要： A space-time block coding (STBC) apparatus and method for a transmitter with four Tx antennas is provided. An input symbol sequence is transmitted through the four Tx antennas in a predetermined method based on feedback information received from a receiver, thereby improving the performance of an STBC.

摘要翻译： 提供了一种具有四个Tx天线的发射机的时空块编码（STBC）装置和方法。 基于从接收器接收到的反馈信息，以预定方法通过四个Tx天线发送输入符号序列，从而提高STBC的性能。

公开(公告)号：US07236744B2

公开(公告)日：2007-06-26

申请号：US10914461

申请日：2004-08-09

申请人： Chan-Byoung Chae ,  Pan-Yuh Joo ,  Seok-Hyun Yoon

发明人： Chan-Byoung Chae ,  Pan-Yuh Joo ,  Seok-Hyun Yoon

IPC分类号： H04B15/00

CPC分类号： H04B7/086 ,  H04B7/0854

摘要： A base station having at least one reception antenna generates a reception beam using a previous reception beam weight and a despread signal of a current reception signal, calculates an error value indicating a difference between the current reception signal and a desired reception signal, and calculates a current reception beam weight using the previous reception beam weight, the despread signal and the error value. The base station generates a reception beam weight step value using the error value and an output signal, calculates a difference between the previous reception beam weight and a product of the reception beam weight step value, the despread signal, and a conjugate value of the error value, as the current reception beam weight, and selects the reception beam weight step value such that the current reception beam weight becomes the optimal reception beam.

摘要翻译： 具有至少一个接收天线的基站使用先前接收波束权重和当前接收信号的去扩展信号来生成接收波束，计算表示当前接收信号与期望接收信号之间的差的误差值，并计算出 使用先前接收波束权重的当前接收波束权重，解扩信号和误差值。 基站使用误差值和输出信号生成接收波束加权步长值，计算先前的接收波束权重与接收波束权重步长值，解扩展信号和误差的共轭值之间的差 作为当前接收波束权重，并且选择接收波束加权步长值使得当前接收波束权重变为最佳接收波束。

公开(公告)号：US20070111677A1

公开(公告)日：2007-05-17

申请号：US11541744

申请日：2006-10-02

申请人： Patrick Eggers ,  Gert Pedersen ,  Mikael Knudsen ,  Do-Young Kim ,  Marcos Katz ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Jun-Young Jung ,  Dong-Seek Park ,  Chan-Byoung Chae

发明人： Patrick Eggers ,  Gert Pedersen ,  Mikael Knudsen ,  Do-Young Kim ,  Marcos Katz ,  Sung-Kwon Hong ,  Young-Kwon Cho ,  Jun-Young Jung ,  Dong-Seek Park ,  Chan-Byoung Chae

IPC分类号： H04B1/02

CPC分类号： H04B7/0608 ,  H04B7/0814

摘要： An apparatus and method are provided for stabilizing terminal power in antenna ports. A data transmission/reception method is provided for terminal power stabilization in a communication system using multiple antennas. An optimal antenna immune to absorption loss due to human body proximity is selected from among multiple antennas connected to a single port when a data service is provided. Data for the data service is transmitted and received through the selected antenna.

摘要翻译： 提供一种用于稳定天线端口中的终端功率的装置和方法。 在使用多个天线的通信系统中提供数据发送/接收方法用于终端电力稳定化。 当提供数据服务时，从连接到单个端口的多个天线中选择免受由于人体接近的吸收损耗的最佳天线。 通过所选择的天线发送和接收数据业务的数据。

公开(公告)号：US20070086543A1

公开(公告)日：2007-04-19

申请号：US11581841

申请日：2006-10-17

申请人： Mazzarese David ,  Chan-Byoung Chae

发明人： Mazzarese David ,  Chan-Byoung Chae

IPC分类号： H04L27/00 ,  H04L1/02

CPC分类号： H04B7/0697 ,  H04B7/0452

摘要： An apparatus and method for transmitting/receiving data in a multi-user multi-antenna communication system is provided. A data transmitting apparatus and method computes a TX filter of a transmitter in an improved scheme and transmits the computed TX filter to a receiver in a one-way channel sounding scheme. A data receiving apparatus and method receives the TX filter over a channel and uses the product of the received TX filter and a channel matrix as an RX filter.

摘要翻译： 提供了一种用于在多用户多天线通信系统中发送/接收数据的装置和方法。 数据发送装置和方法以改进方案计算发射机的TX滤波器，并以单向信道探测方案将所计算的TX滤波器发送到接收机。 数据接收装置和方法通过信道接收TX滤波器，并将接收到的TX滤波器和信道矩阵的乘积作为RX滤波器。