公开(公告)号：US07957450B2

公开(公告)日：2011-06-07

申请号：US12506053

申请日：2009-07-20

申请人： Christopher J. Hansen ,  Carlos H. Aldana ,  Joonsuk Kim

发明人： Christopher J. Hansen ,  Carlos H. Aldana ,  Joonsuk Kim

IPC分类号： H04B1/00

CPC分类号： H04B7/0417 ,  H04B7/0426 ,  H04B7/0626 ,  H04B7/063 ,  H04B7/0634 ,  H04B7/0663 ,  H04B7/0689 ,  H04B7/0691 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0028 ,  H04L1/0029 ,  H04L1/06 ,  H04L1/0681 ,  H04L1/0693

摘要： A method and system for frame formats for MIMO channel measurement exchange is provided. Aspects of a method for communicating information in a communication system may comprise transmitting data via a plurality of radio frequency (RF) channels utilizing a plurality of transmitting antenna, receiving feedback information via at least one of a plurality of RF channels, and modifying a transmission mode based on the feedback information. Aspects of a method for communicating information in a communication system may also comprise receiving data via a plurality of receiving antenna, transmitting feedback information via at least one of the plurality of RF channels, and requesting modification of a transmission mode for the received data in transmitted response messages comprising the feedback information.

摘要翻译： 提供了一种用于MIMO信道测量交换的帧格式的方法和系统。 用于在通信系统中传送信息的方法的方面可以包括利用多个发射天线经由多个射频（RF）信道发送数据，经由多个RF信道中的至少一个接收反馈信息，以及修改传输 模式基于反馈信息。 用于在通信系统中传送信息的方法的方面还可以包括经由多个接收天线接收数据，经由多个RF信道中的至少一个RF信道发送反馈信息，并请求修改发送的接收数据的传输模式 响应消息包括反馈信息。

公开(公告)号：US07873016B2

公开(公告)日：2011-01-18

申请号：US11327752

申请日：2006-01-06

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04W4/00 ,  H04B7/212

CPC分类号： H04B7/0456 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0634 ,  H04B7/0639 ,  H04L27/2626 ,  H04L27/2647

摘要： Aspects of a method and system for utilizing tone grouping with Givens rotations to reduce overhead associated with explicit feedback information are presented. In one aspect of the invention, Givens matrices may be utilized to reduce a quantity of information communicated in explicit feedback information via an uplink RF channel. The explicit feedback information may include specifications for a feedback beamforming matrix that may be utilized when transmitting signals via a corresponding downlink RF channel. The feedback beamforming matrix may represent a rotated version of an un-rotated matrix. The Givens matrices may be utilized to apply one or more Givens rotations to un-rotated matrix. The rotated matrix may reduce the quantity of information communicated in the explicit feedback information. The quantity of information communicated in the explicit feedback information may be further reduced by utilizing tone grouping.

摘要翻译： 提出了利用Givens旋转利用音调分组以减少与显式反馈信息相关的开销的方法和系统的方面。 在本发明的一个方面，可以利用Givens矩阵来经由上行链路RF信道来减少在显式反馈信息中传送的信息量。 显式反馈信息可以包括当经由相应的下行链路RF信道发送信号时可以使用的反馈波束成形矩阵的规范。 反馈波束形成矩阵可以表示未旋转矩阵的旋转版本。 Givens矩阵可以用于将一个或多个Givens旋转应用于未旋转的矩阵。 旋转的矩阵可以减少在显式反馈信息中传达的信息的数量。 可以通过利用音调分组来进一步减少在显式反馈信息中传送的信息量。

公开(公告)号：US20100119017A1

公开(公告)日：2010-05-13

申请号：US12607719

申请日：2009-10-28

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04L27/06

CPC分类号： H04L25/0204 ,  H04L1/0606 ,  H04L1/0662 ,  H04L1/0675 ,  H04L25/03343 ,  H04L2025/03414 ,  H04L2025/03426

摘要： Aspects of a method and system for a 4×2 SFBC/STBC system with 2 spatial streams using angle feedback are presented. Aspects of the system include a 4×2 SFBC/STBC communication diversity system with 2 distinct spatial streams using angle feedback. A receiving station may concurrently receive signals. A channel estimate matrix may be computed based on the received signals. A rotation angle value may be computed based on the channel estimate matrix. The receiving station may transmit the computed rotation angle via feedback information to a transmitting station. The transmitting station may utilize the received feedback information to generate a plurality of 4 distinct transmit chain signals based on data symbols received via a plurality of 2 spatial streams. Each of the distinct transmit chain signals may comprise a plurality of codewords. The transmitting station may concurrently transmit the plurality of transmit chain signals via the plurality of transmitting antennas.

摘要翻译： 提出了一种使用角度反馈的2个空间流的4×2 SFBC / STBC系统的方法和系统。 该系统的方面包括一个4×2 SFBC / STBC通信分集系统，具有使用角度反馈的2个不同的空间流。 接收站可以同时接收信号。 可以基于接收的信号来计算信道估计矩阵。 可以基于信道估计矩阵来计算旋转角度值。 接收站可以通过反馈信息将计算出的旋转角度发送到发射站。 发射站可以利用所接收的反馈信息，以基于经由多个2个空间流接收的数据符号来生成多个4个不同的发射链信号。 每个不同的发射链信号可以包括多个码字。 发送站可以经由多个发送天线同时发送多个发送链信号。

公开(公告)号：US07561631B2

公开(公告)日：2009-07-14

申请号：US11007758

申请日：2004-12-09

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04B7/02 ,  H04L1/02

CPC分类号： H04L1/0643 ,  H04L1/0631 ,  H04L1/08

摘要： A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers, the method includes the steps of receiving M data signals from M receive antennas, applying the M data signals to a space/time decoder to produce M decoded streams and reconstructing original data transmitted via N transmit antennas from the M decoded streams. At least P transmitting antennas transmit space-time block-coded signals and (N-P) transmitting antennas transmit code signals through spatial division multiplexing, where P is an integer.

摘要翻译： 一种从N个发送天线向M个接收天线发送数据的方法，其中M和N是整数，所述方法包括以下步骤：从M个接收天线接收M个数据信号，将M个数据信号应用于空间/时间解码器以产生M 解码流，并重建从M个解码流中经由N个发送天线发送的原始数据。 至少P个发射天线发射空时块编码信号，（N-P）发射天线通过空分复用发射码信号，其中P是一个整数。

公开(公告)号：US20090161641A1

公开(公告)日：2009-06-25

申请号：US12338895

申请日：2008-12-18

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04W4/00 ,  H04B7/02

CPC分类号： H04B7/0417 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/0618 ,  H04L47/25 ,  H04L67/322 ,  H04L69/14 ,  H04W28/18 ,  H04W28/22 ,  H04W84/12 ,  Y02D50/30

摘要： Aspects of a method and system for rate selection algorithm to maximize throughput in closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system are provided and may comprise computing a maximum number of binary bits to be, simultaneously transmitted via an RF channel based on signal quality. A modulation technique may be selected based on the computed maximum, communicating feedback information comprising the selected modulation technique. Subsequently transmitted data may be received via an RF channel which is modulated based on the feedback information. Another aspect of the method may comprise receiving feedback information comprising at least one of a selected modulation technique and coding rate via an RF channel, and transmitting subsequent data via said at least one of a plurality of RF channels which either modulated, or coded, based on the feedback information.

摘要翻译： 提供了用于使闭环多输入多输出（MIMO）无线局域网（WLAN）系统中的吞吐量最大化的速率选择算法的方法和系统的方面，并且可以包括计算最大数量的二进制位，同时经由 RF信道基于信号质量。 可以基于所计算的最大值来选择调制技术，传达包括所选调制技术的反馈信息。 随后发送的数据可以经由基于反馈信息进行调制的RF信道被接收。 该方法的另一方面可以包括经由RF信道接收包括所选调制技术和编码率中的至少一个的反馈信息，以及经由经调制或编码的多个RF信道中的所述至少一个RF信道来发送后续数据 关于反馈信息。

公开(公告)号：US07519126B2

公开(公告)日：2009-04-14

申请号：US10953366

申请日：2004-09-30

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04B7/02

CPC分类号： H04L1/0643 ,  H04L27/2647

摘要： A method of receiving data over N receiving antennas from M transmitting antennas, where M and N are integers, includes the steps of receiving N signals over the N receiving antennas, applying the N signals to a space/time decoder, determining noise powers for N channels, with the N channels being based on the N signals, applying Viterbi filtering to the N channels utilizing the noise powers and deriving received data from the filtered N channels.

摘要翻译： 一种从N个接收天线接收来自M个发射天线的数据的方法，其中M和N是整数，包括以下步骤：在N个接收天线上接收N个信号，将N个信号应用到空时/解码器，确定噪声功率为N 信道，其中N个信道基于N个信号，利用噪声功率对N个信道应用维特比滤波，并从滤波的N个信道中导出接收到的数据。

公开(公告)号：US07324785B2

公开(公告)日：2008-01-29

申请号：US09997938

申请日：2001-11-30

申请人： Christopher J. Hansen ,  Joonsuk Kim ,  Matthew Fischer ,  Rajugopal Gubbi

发明人： Christopher J. Hansen ,  Joonsuk Kim ,  Matthew Fischer ,  Rajugopal Gubbi

IPC分类号： H04B1/00

CPC分类号： H04B1/385 ,  H04B1/3838 ,  H04B2001/3872

摘要： A method and apparatus for controlling transmit power of a wireless communication device includes processing that begins when a transmitting wireless communication device transmits a packet to a targeted wireless device via a wireless channel of a communication system at a 1st power level. The processing continues by having the targeted wireless device determining signal strength of the packet received via the wireless channel. The processing then continues when the targeted and/or transmitting device determines the adequacy of the 1st power level based on the determined signal strength. If the 1st power level is adequate, the transmitting wireless device continues to transmit information at the 1st power level. If, however, the 1st power level is not adequate, the transmitting communication device adjusts its transmit power up or down to provide an adequate power level.

摘要翻译： 一种用于控制无线通信设备的发射功率的方法和装置包括当发送无线通信设备经由无线通信系统的无线信道向目标无线设备发送分组时开始的处理， 能量等级。 通过使目标无线设备确定经由无线信道接收到的分组的信号强度，继续处理。 然后，当目标和/或发射装置基于确定的信号强度来确定1 SUP的功率电平的充足性时，处理继续。 如果1 ^{功率电平足够，则发送无线设备继续以1 SUP功率电平发送信息。 然而，如果第一功率电平不足，则发射通信设备向上或向下调整其发射功率以提供足够的功率电平。}

公开(公告)号：US20070258536A1

公开(公告)日：2007-11-08

申请号：US11417688

申请日：2006-05-04

申请人： Joonsuk Kim ,  Sirikiat Ariyavisitakul ,  Eric Ojard

发明人： Joonsuk Kim ,  Sirikiat Ariyavisitakul ,  Eric Ojard

IPC分类号： H04L1/02

CPC分类号： H04L1/0656 ,  H04B7/0426 ,  H04L1/0631 ,  H04L25/0206 ,  H04L27/2647 ,  H04L2025/03426

摘要： Aspects of a method and system for reordered QRV-LST (layered space time) detection for efficient processing for multiple input multiple output (MIMO) communication systems are presented. The method may include receiving an ordered plurality of signals wherein each of the ordered plurality of received signals comprises information contained in an ordered plurality of spatial streams. Each spatial stream may comprise one or more frequency carriers, or tones. Information, or data, contained in a corresponding one of the ordered plurality of spatial streams may be detected. The order in which the information is detected may be determined for each individual frequency carrier.

摘要翻译： 提出了用于多输入多输出（MIMO）通信系统的有效处理的重新排序的QRV-LST（分层时空）检测方法和系统的方面。 该方法可以包括接收有序多个信号，其中有序多个接收信号中的每一个包括包含在有序多个空间流中的信息。 每个空间流可以包括一个或多个频率载波或音调。 可以检测包含在有序多个空间流中的对应的一个空间流中的信息或数据。 可以针对每个单独的频率载波确定检测信息的顺序。

公开(公告)号：US20070160011A1

公开(公告)日：2007-07-12

申请号：US11393224

申请日：2006-03-30

申请人： Joonsuk Kim ,  Eric Ojard

发明人： Joonsuk Kim ,  Eric Ojard

IPC分类号： H04Q7/00 ,  H04Q7/24

CPC分类号： H04B7/043 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0663

摘要： Aspects of a method and system for utilizing Givens rotation expressions for quantization for a general beamforming matrix in feedback information. In one aspect of the invention, feedback information is computed at the receiving MIMO wireless device based on a geometric mean decomposition (GMD) method. The feedback information may include a matrix that describes a wireless medium. The matrix may represent a multiplicative product of at least one rotation matrix and at least one diagonal phase rotation matrix. Each of the rotation matrices may include at least one matrix element whose value is based on Givens rotation angle. The transmitting MIMO wireless device may subsequently transmit a plurality of signals via the wireless medium based on the received matrix information. The signal strength and/or signal to noise ratio (SNR) measurement (as measured in decibels, for example) associated with each of the transmitted plurality of signals may be about equal.

摘要翻译： 利用Givens旋转表达式对反馈信息中的一般波束形成矩阵进行量化的方法和系统的方面。 在本发明的一个方面，基于几何平均分解（GMD）方法在接收MIMO无线设备处计算反馈信息。 反馈信息可以包括描述无线介质的矩阵。 矩阵可以表示至少一个旋转矩阵和至少一个对角相位旋转矩阵的乘法乘积。 每个旋转矩阵可以包括至少一个基于Givens旋转角度的矩阵元素。 发射MIMO无线设备可以随后基于所接收的矩阵信息经由无线介质发送多个信号。 与所发送的多个信号中的每一个相关联的信号强度和/或信噪比（SNR）测量（例如以分贝测量）可以大致相等。

公开(公告)号：US20070008946A1

公开(公告)日：2007-01-11

申请号：US11168832

申请日：2005-06-28

申请人： Joonsuk Kim

发明人： Joonsuk Kim

IPC分类号： H04J3/00

CPC分类号： H04B7/0671

摘要： A multiple stream cyclic-shifted delay transmitter including a baseband processing module and a plurality of RF transmit sections. The baseband processing module is operably coupled to convert outbound data into a plurality of transmit baseband signal streams and cyclic-shift delay at least one of the plurality of transmit baseband signal streams to produce at least one cyclic shift delayed transmit baseband signal stream. The plurality of RF) transmit sections is operably coupled to convert the plurality of transmit baseband signal streams and the at least one cyclic-shift delayed transmit baseband signal stream into a plurality of RF signals.

摘要翻译： 一种多流循环移位延迟发射机，包括基带处理模块和多个RF发射部分。 基带处理模块可操作地耦合以将出站数据转换成多个发射基带信号流，并且循环移位延迟多个发射基带信号流中的至少一个以产生至少一个循环移位延迟的发射基带信号流。 多个RF）发射部分可操作地耦合以将多个发射基带信号流和至少一个循环移位延迟的发射基带信号流转换成多个RF信号。