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    METHOD AND SYSTEM FOR SFBC/STBC USING INTERFERENCE CANCELLATION
    2.
    发明申请
    METHOD AND SYSTEM FOR SFBC/STBC USING INTERFERENCE CANCELLATION 审中-公开
    SFBC / STBC使用干扰消除的方法和系统

    公开(公告)号：US20080317178A1

    公开(公告)日：2008-12-25

    申请号：US11874566

    申请日：2007-10-18

    申请人： Joonsuk Kim ,  Nambirajan Seshadri ,  Sirikiat Ariyavisitakul

    发明人： Joonsuk Kim ,  Nambirajan Seshadri ,  Sirikiat Ariyavisitakul

    IPC分类号： H04L1/02 ,  H04B7/10 ,  H04L1/00

    CPC分类号： H04B7/0669 ,  H04B7/068 ,  H04B7/0854 ,  H04L1/0631 ,  H04L25/0224

    摘要： Aspects of a method and system for SFBC and/or STBC using interference cancellation are presented. Aspects of an exemplary system may enable rate 5 4 coding in diversity communication systems that utilize SFBC and/or STBC. A transmitting station may utilize SFBC or STBC to generate and/or concurrently transmit a plurality of signals symbols, which are encoded to enable rate 5 4 transmission. A receiving station may decode rate 5 4 encoded signals utilizing various methods to achieve interference cancellation. The interference cancellation may cancel at least a portion of intersymbol interference, which may occur among symbols in the received rate 5 4 encoded signals. Various methods may be utilized to compute estimated values for at least a portion of the symbols. These methods may include the class of linear estimation methods, such as minimum mean squared error (MMSE) estimation.

    摘要翻译： 提出了使用干扰消除的SFBC和/或STBC的方法和系统的方面。 示例性系统的方面可以实现速率 5 使用SFBC和/或STBC的分集通信系统中的mn> 编码。 发送站可以利用SFBC或STBC生成和/或同时发送多个信号符号，这些符号被编码以使得能够使用率 5 4 传输。 接收站可以解码速率 5 4 使用各种方法实现干扰消除的编码信号 。 干扰消除可以消除在接收速率中的符号之间可能出现的符号间干扰的至少一部分 编码信号 5 4 可以使用各种方法来计算至少一部分符号的估计值。 这些方法可以包括诸如最小均方误差（MMSE）估计之类的线性估计方法。

      METHOD AND SYSTEM FOR SFBC/STBC IN A COMMUNICATION DIVERSITY SYSTEM USING ANGLE FEEDBACK
      3.
      发明申请
      METHOD AND SYSTEM FOR SFBC/STBC IN A COMMUNICATION DIVERSITY SYSTEM USING ANGLE FEEDBACK 失效
      在使用角度反馈的通信多样性系统中的SFBC / STBC的方法和系统

      公开(公告)号：US20080311873A1

      公开(公告)日：2008-12-18

      申请号：US11864611

      申请日：2007-09-28

      申请人： Joonsuk Kim ,  Sirikiat Ariyavisitakul ,  Nambirajan Seshadri

      发明人： Joonsuk Kim ,  Sirikiat Ariyavisitakul ,  Nambirajan Seshadri

      IPC分类号： H04B1/06

      CPC分类号： H04B7/0634 ,  H04B7/0669 ,  H04B7/068 ,  H04B7/0891 ,  H04L1/0003 ,  H04L1/04 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0053 ,  H04L25/0224

      摘要： Aspects of a system for STBC/SFBC in a communication system using angle feedback may include a receiver, which enables reception of signals via a plurality of receiving antennas. The receiver may enable computation of a rotation factor value based on the received signals and utilization of the computed rotation factor value to receive subsequent signals via the plurality of receiving antennas. The received signals may comprise preamble data. The receiver may enable computation of channel estimate values based on the received preamble data. A rotation angle value may be computed based on the computed channel estimate values. The rotation factor value may be computed based on the computed rotation angle value. The receiver may enable transmission of feedback information comprising the computed rotation factor and/or the computed rotation angle.

      摘要翻译： 在使用角度反馈的通信系统中用于STBC / SFBC的系统的方面可以包括能够经由多个接收天线接收信号的接收机。 接收机可以使得能够基于所接收的信号来计算旋转因子值，并且利用所计算的旋转因子值以经由多个接收天线接收后续信号。 所接收的信号可以包括前导码数据。 接收机可以使得能够基于所接收的前导码数据来计算信道估计值。 可以基于所计算的信道估计值来计算旋转角度值。 可以基于计算的旋转角度值来计算旋转因子值。 接收机可以实现包括所计算的旋转因子和/或所计算的旋转角度的反馈信息的传输。

      Method and system for SFBC/STBC in a communication diversity system using angle feedback
      4.
      发明授权
      Method and system for SFBC/STBC in a communication diversity system using angle feedback 失效
      使用角度反馈的通信分集系统中SFBC / STBC的方法和系统

      公开(公告)号：US08254507B2

      公开(公告)日：2012-08-28

      申请号：US11864611

      申请日：2007-09-28

      申请人： Joonsuk Kim ,  Sirikiat Ariyavisitakul ,  Nambirajan Seshadri

      发明人： Joonsuk Kim ,  Sirikiat Ariyavisitakul ,  Nambirajan Seshadri

      IPC分类号： H04B7/10

      CPC分类号： H04B7/0634 ,  H04B7/0669 ,  H04B7/068 ,  H04B7/0891 ,  H04L1/0003 ,  H04L1/04 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0053 ,  H04L25/0224

      摘要： Aspects of a system for STBC/SFBC in a communication system using angle feedback may include a receiver, which enables reception of signals via a plurality of receiving antennas. The receiver may enable computation of a rotation factor value based on the received signals and utilization of the computed rotation factor value to receive subsequent signals via the plurality of receiving antennas. The received signals may comprise preamble data. The receiver may enable computation of channel estimate values based on the received preamble data. A rotation angle value may be computed based on the computed channel estimate values. The rotation factor value may be computed based on the computed rotation angle value. The receiver may enable transmission of feedback information comprising the computed rotation factor and/or the computed rotation angle.

      摘要翻译： 在使用角度反馈的通信系统中用于STBC / SFBC的系统的方面可以包括能够经由多个接收天线接收信号的接收机。 接收机可以使得能够基于所接收的信号来计算旋转因子值，并且利用所计算的旋转因子值以经由多个接收天线接收后续信号。 所接收的信号可以包括前导码数据。 接收机可以使得能够基于所接收的前导码数据来计算信道估计值。 可以基于所计算的信道估计值来计算旋转角度值。 可以基于计算的旋转角度值来计算旋转因子值。 接收机可以实现包括所计算的旋转因子和/或所计算的旋转角度的反馈信息的传输。

      Asymmetrical multiple stream wireless communication using STBC
      5.
      发明申请
      Asymmetrical multiple stream wireless communication using STBC 有权
      使用STBC的不对称多流无线通信

      公开(公告)号：US20050185730A1

      公开(公告)日：2005-08-25

      申请号：US11057842

      申请日：2005-02-15

      申请人： Christopher Hansen ,  Joonsuk Kim ,  Rajendra Moorti ,  Nambirajan Seshadri ,  Jason Trachewsky

      发明人： Christopher Hansen ,  Joonsuk Kim ,  Rajendra Moorti ,  Nambirajan Seshadri ,  Jason Trachewsky

      IPC分类号： H04L1/02

      CPC分类号： H04L1/0066 ,  H04L1/0643 ,  H04L1/065 ,  H04L1/1671

      摘要： A method of communicating data to M receiving antennas from N transmitting antennas, where M and N are integers and unequal, has the steps of sending a message to determine a number of transmit paths to be used, awaiting an acknowledgement message comprising a number of receiver paths, setting the number of transmit paths based on at least the acknowledgement message, producing data streams from outbound data based on the number of transmit paths, applying the data streams to a space/time encoder to produce encoded signals and transmitting the encoded signals from at least a portion of N transmitting antennas.

      摘要翻译： 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是整数和不等的，具有发送消息以确定要使用的发送路径的数量的步骤，等待包括多个接收机的确认消息 至少基于确认消息设置发送路径的数量，基于发送路径的数量从出站数据生成数据流，将数据流应用到空间/时间编码器以产生编码信号并从 N个发射天线的至少一部分。

      Transmission coordination within multiple user, multiple access, and/or MIMO wireless communications
      6.
      发明授权
      Transmission coordination within multiple user, multiple access, and/or MIMO wireless communications 有权
      多用户，多路访问和/或MIMO无线通信中的传输协调

      公开(公告)号：US09379858B2

      公开(公告)日：2016-06-28

      申请号：US12794712

      申请日：2010-06-04

      申请人： Vinko Erceg ,  Joseph Paul Lauer ,  Matthew James Fischer ,  Peiman Amini ,  Joonsuk Kim

      发明人： Vinko Erceg ,  Joseph Paul Lauer ,  Matthew James Fischer ,  Peiman Amini ,  Joonsuk Kim

      IPC分类号： H04W40/00 ,  H04L5/00 ,  H04B7/02 ,  H04L1/00 ,  H04L1/06 ,  H04L1/16 ,  H04W88/02

      CPC分类号： H04W72/0453 ,  H04L1/0009 ,  H04L1/0065 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/0618 ,  H04L1/1607 ,  H04L5/0023 ,  H04L27/2602 ,  H04W88/02

      摘要： Transmission coordination within multiple user, multiple access, and/or MIMO wireless communications. Within wireless communication systems, there can be various wireless communication devices therein that are not all compliant with a common capability set, communication protocol, communication standard, recommended practice, etc. For example, some communication systems may have some wireless communication devices characterized as ‘legacy’ wireless communication devices, and other wireless communication devices therein may be newer and compliant with newer capability sets, communication protocols, communication standards, recommended practices, etc. In such instances, coordination of transmissions among the various wireless communication devices may be made, when performing simultaneous transmissions, by ensuring that transmissions of devices on different channels is made when aligned on a common boundary of an OFDM symbol. Alternatively, such simultaneous transmissions may be made when offset by some multiple of OFDM symbol duration. When performing non-simultaneous transmissions, transmissions may be made based on channel availability.

      摘要翻译： 多用户，多路访问和/或MIMO无线通信中的传输协调。 在无线通信系统中，其中可以有各种各样的无线通信设备，它们都不符合公共能力集，通信协议，通信标准，推荐做法等。例如，一些通信系统可以具有一些无线通信设备， 传统“无线通信设备和其他无线通信设备可能更新，并且符合更新的能力集，通信协议，通信标准，推荐做法等。在这种情况下，可以进行各种无线通信设备之间的传输协调， 当执行同时传输时，通过确保在OFDM符号的公共边界上对准时不同信道上的设备的传输。 或者，当偏移OFDM符号持续时间的某个倍数时，可以进行这种同时传输。 当执行非同时传输时，可以基于信道可用性进行传输。

      Method and system for utilizing tone grouping with givens rotations to reduce overhead associated with explicit feedback information
      7.
      发明授权
      Method and system for utilizing tone grouping with givens rotations to reduce overhead associated with explicit feedback information 有权
      利用旋转旋转进行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

      公开(公告)号：US08346262B2

      公开(公告)日：2013-01-01

      申请号：US13535024

      申请日：2012-06-27

      申请人： Joonsuk Kim

      发明人： Joonsuk Kim

      IPC分类号： H04W36/00 ,  H04W40/00

      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。

      Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook
      9.
      发明授权
      Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook 有权
      在使用码本的多用户多输入多输出（MIMO）通信系统中波束成形的方法和系统

      公开(公告)号：US08098755B2

      公开(公告)日：2012-01-17

      申请号：US12190272

      申请日：2008-08-12

      申请人： Joonsuk Kim ,  Sirikiat Ariyavisitakul

      发明人： Joonsuk Kim ,  Sirikiat Ariyavisitakul

      IPC分类号： H04B7/02

      CPC分类号： H04L25/03343 ,  H04L1/0026 ,  H04L1/0618 ,  H04L2025/03426 ,  H04L2025/03802

      摘要： A method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook may include a processor in a node B that enables generation of an interference cancellation matrix (WR). The interference cancellation matrix, also referred to as a matched filter, may enable a composite signal (Y) to be represented as a plurality of subsidiary signals (yi), each of which is transmitted by the node B for reception at a corresponding ith UE station. Each of the subsidiary signals yi may be generated based on a corresponding one of a plurality of data stream signals (xi). The processor may enable generation of a precoding matrix (WT) based on the interference cancellation matrix. A transmitter within the node B may enable generation of a plurality of signals based on the preceding matrix. The signals may be transmitted via a wireless communication medium.

      摘要翻译： 在使用码本的多用户多输入多输出（MIMO）通信系统中的波束成形的方法和系统可以包括能够产生干扰消除矩阵（WR）的节点B中的处理器。 也称为匹配滤波器的干扰消除矩阵可以使得复合信号（Y）能够被表示为多个辅助信号（yi），每个辅助信号由节点B发送以在对应的第i个UE处接收 站。 辅助信号yi中的每一个可以基于多个数据流信号（xi）中的对应的一个生成。 处理器可以使得能够基于干扰消除矩阵生成预编码矩阵（WT）。 节点B内的发射机可以使得能够基于先前的矩阵生成多个信号。 信号可以经由无线通信介质发送。

      METHOD AND SYSTEM FOR MULTIBAND USER SCHEDULING IN A MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT (MU-MIMO) COMMUNICATION SYSTEM
      10.
      发明申请
      METHOD AND SYSTEM FOR MULTIBAND USER SCHEDULING IN A MULTIPLE USER MULTIPLE INPUT MULTIPLE OUTPUT (MU-MIMO) COMMUNICATION SYSTEM 审中-公开
      用于多用户多输入多输出（MU-MIMO）通信系统中的多用户调度的方法和系统

      公开(公告)号：US20110164578A1

      公开(公告)日：2011-07-07

      申请号：US12720945

      申请日：2010-03-10

      申请人： Joonsuk Kim ,  Sirikiat Lek Ariyavisitakul

      发明人： Joonsuk Kim ,  Sirikiat Lek Ariyavisitakul

      IPC分类号： H04W72/04

      CPC分类号： H04L5/003 ,  H04L5/0016

      摘要： A method and system for multiband user scheduling in a multiple user multiple input multiple output (MU-MIMO) communication system are presented. In one aspect of the method and system a plurality of users in a user group may be selectively assigned to individual frequency bands among a plurality of frequency bands (referred to as a multiband). In an exemplary aspect, a modified greedy user scheduling algorithm may be utilized for assigning users, selected from the user group, to each of the frequency bands. Assigned users for a given frequency band are determined based on channel norm values computed for each of the users in the user group and on chordal distances computed between users in the user group. Pairs of users, selected from the user group, are assigned to each frequency band in the multiband to maximize aggregate data rate capacity for the MIMO communication system.

      摘要翻译： 提出了一种多用户多输入多输出（MU-MIMO）通信系统中多频段用户调度的方法和系统。 在方法和系统的一个方面，用户组中的多个用户可以被选择性地分配给多个频带（被称为多频带）中的各个频带。 在示例性方面，可以使用修改的贪心用户调度算法来将从用户组中选择的用户分配给每个频带。 基于针对用户组中的每个用户计算的信道范数值以及在用户组中的用户之间计算的弦距来确定给定频带的分配用户。 从用户组中选择的成对用户被分配给多频带中的每个频带，以最大化MIMO通信系统的汇总数据速率容量。