中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

9 records (took 0.014 seconds)

    Quality control scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems
    1.
    发明授权
    Quality control scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems 有权
    用于多输入多输出（MIMO）正交频分复用（OFDM）系统的质量控制方案

    公开(公告)号：US09509378B2

    公开(公告)日：2016-11-29

    申请号：US14224195

    申请日：2014-03-25

    Applicant: InterDigital Technology Corporation

    Inventor： Changsoo Koo ,  Robert Lind Olesen

    IPC: H04J11/00 ,  H04B7/04 ,  H04L1/00 ,  H04L5/00

    CPC classification number: H04B7/0417 ,  H04B17/336 ,  H04L1/0002 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0064 ,  H04L27/2601 ,  Y02D50/10

    Abstract: A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent to the transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained.

    Abstract translation: 一种用于优化与多输入多输出（MIMO）天线一起使用的正交频分复用（OFDM）系统的系统容量的方法和装置。 在接收机中，设置目标服务质量（QoS）度量和参考数据速率。 可以将目标QoS度量设置为预定值和/或可以通过慢速外部环路控制处理器相对于分组错误率（PER）动态地调整。 将接收到的信号的QoS与目标QoS进行比较。 根据比较，接收机产生发送到发射机的信道质量指示符（CQI）。 CQI是一个或两个比特指示符，其向发射机指示禁用，调整或维持特定子载波，每个发射天线的子载波组或跨所有发射天线的子载波组的数据传输速率。 在发射机处，传输的数据速率被禁用，调整或维护。

    METHOD AND APPARATUS FOR IMPLEMENTING SPACE TIME PROCESSING WITH UNEQUAL MODULATION AND CODING SCHEMES
    2.
    发明申请
    METHOD AND APPARATUS FOR IMPLEMENTING SPACE TIME PROCESSING WITH UNEQUAL MODULATION AND CODING SCHEMES 有权
    用不平等调制和编码方案实现空间时间处理的方法和装置

    公开(公告)号：US20130039441A1

    公开(公告)日：2013-02-14

    申请号：US13651901

    申请日：2012-10-15

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： Robert Lind Olesen ,  Eldad M. Zeira ,  Peter J. Voltz ,  Yongwen E. Yang ,  Quingyuan Dai ,  Chang-Soo Koo ,  I-Tai Lu ,  KunJu Tsai

    IPC: H04L27/00

    CPC classification number: H04L1/0643 ,  H04B7/0456 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0837 ,  H04B7/0891 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0631 ,  H04L27/2626 ,  H04L27/2647 ,  H04W84/12

    Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

    Abstract translation: 公开了一种用于实现具有不等调制和编码方案（MCS）或流依赖MCS的空间处理的方法和装置。 输入数据可以被解析成多个数据流，并且对数据流执行空间处理以产生多个空间流。 独立地选择每个数据流的MCS。 空间流通过多个发射天线发射。 可以对空间时间块编码（STBC），空间频率块编码（SFBC），准正交Alamouti编码，时间反转空间时间块编码，线性空间处理和循环延迟分集（CDD）的技术中的至少一种进行 数据/空间流。 然后可以将天线映射矩阵应用于空间流。 空间流通过多个发射天线发射。 可以基于与数据流相关联的每个空间流的信噪比来确定每个数据流的MCS。

    METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS COMMUNICATION SYSTEM
    4.
    发明申请
    METHOD AND APPARATUS FOR IMPLEMENTING SPACE FREQUENCY BLOCK CODING IN AN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING WIRELESS COMMUNICATION SYSTEM 审中-公开
    在正交频分多路无线通信系统中实现空间频率编码的方法与装置

    公开(公告)号：US20140010323A1

    公开(公告)日：2014-01-09

    申请号：US14021783

    申请日：2013-09-09

    Applicant: InterDigital Technology Corporation

    Inventor： Jaeyoung Kwak ,  Robert Lind Olesen ,  Aykut Bultan ,  Elad Zeira ,  Chang-Soo Koo ,  Fatih Ozluturk ,  Yuejin Huang ,  Kalpendu R. Pasad

    IPC: H04L27/156

    CPC classification number: H04L1/0606 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0632 ,  H04B7/066 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/006 ,  H04L27/156 ,  H04L27/2626 ,  H04L2027/0046 ,  Y02B70/30 ,  Y02D50/10

    Abstract: The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.

    Abstract translation: 本发明涉及一种用于在正交频分复用（OFDM）无线通信系统中实现空间频率块编码（SFBC）的方法和装置。 本发明适用于闭环模式和开环模式。 在闭环模式中，基于信道状态信息（CSI）执行功率负载和特征波束形成。 信道编码数据流被多路复用成两个或多个数据流。 基于每个复用数据流上的CSI执行功率加载。 对每个配对子载波的数据流执行SFBC编码。 然后，基于CSI执行特征波束形成，以将本征束分布到多个发射天线。 功率加载可以在两个或更多个SFBC编码块上或在每个本征模上执行。 另外，对于弱本征模式，可以跨子载波或子载波组执行功率负载。

    Method and apparatus for implementing space time processing with unequal modulation and coding schemes
    8.
    发明授权
    Method and apparatus for implementing space time processing with unequal modulation and coding schemes 有权
    用于实现具有不等调制和编码方案的时空处理的方法和装置

    公开(公告)号：US08971442B2

    公开(公告)日：2015-03-03

    申请号：US13651901

    申请日：2012-10-15

    Applicant: Interdigital Technology Corporation

    Inventor： Robert Lind Olesen ,  Eldad M. Zeira ,  Peter J. Voltz ,  Yongwen E. Yang ,  Quingyuan Dai ,  Chang-Soo Koo ,  I-Tai Lu ,  KunJu Tsai

    IPC: H04L27/00 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26 ,  H04B7/08

    CPC classification number: H04L1/0643 ,  H04B7/0456 ,  H04B7/0619 ,  H04B7/0626 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0837 ,  H04B7/0891 ,  H04B17/336 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0606 ,  H04L1/0625 ,  H04L1/0631 ,  H04L27/2626 ,  H04L27/2647 ,  H04W84/12

    Abstract: A method and apparatus for implementing spatial processing with unequal modulation and coding schemes (MCSs) or stream-dependent MCSs are disclosed. Input data may be parsed into a plurality of data streams, and spatial processing is performed on the data streams to generate a plurality of spatial streams. An MCS for each data stream is selected independently. The spatial streams are transmitted via multiple transmit antennas. At least one of the techniques of space time block coding (STBC), space frequency block coding (SFBC), quasi-orthogonal Alamouti coding, time reversed space time block coding, linear spatial processing and cyclic delay diversity (CDD) may be performed on the data/spatial streams. An antennal mapping matrix may then be applied to the spatial streams. The spatial streams are transmitted via multiple transmit antennas. The MCS for each data stream may be determined based on a signal-to-noise ratio of each spatial stream associated with the data stream.

    Abstract translation: 公开了一种用于实现具有不等调制和编码方案（MCS）或流依赖MCS的空间处理的方法和装置。 输入数据可以被解析成多个数据流，并且对数据流执行空间处理以产生多个空间流。 独立地选择每个数据流的MCS。 空间流通过多个发射天线发射。 可以对空间时间块编码（STBC），空间频率块编码（SFBC），准正交Alamouti编码，时间反转空间时间块编码，线性空间处理和循环延迟分集（CDD）的技术中的至少一种进行 数据/空间流。 然后可以将天线映射矩阵应用于空间流。 空间流通过多个发射天线传输。 可以基于与数据流相关联的每个空间流的信噪比来确定每个数据流的MCS。

    QUALITY CONTROL SCHEME FOR MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEMS
    9.
    发明申请
    QUALITY CONTROL SCHEME FOR MULTIPLE-INPUT MULTIPLE-OUTPUT (MIMO) ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) SYSTEMS 有权
    用于多输入多输出（MIMO）正交频分多址（OFDM）系统的质量控制方案

    公开(公告)号：US20140205037A1

    公开(公告)日：2014-07-24

    申请号：US14224195

    申请日：2014-03-25

    Applicant: InterDigital Technology Corporation

    Inventor： Changsoo Koo ,  Robert Lind Olesen

    IPC: H04B7/04

    CPC classification number: H04B7/0417 ,  H04B17/336 ,  H04L1/0002 ,  H04L1/0026 ,  H04L5/0023 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/0064 ,  H04L27/2601 ,  Y02D50/10

    Abstract: A method and apparatus for optimizing the system capacity of an Orthogonal Frequency Division Multiplexing (OFDM) system that uses with Multiple-Input Multiple-Output (MIMO) antennas. In a receiver, a target quality of service (QoS) metric and reference data rate are set. The target QoS metric may be set to a predetermined value and/or may be adjusted dynamically with respect to packet error rate (PER) by a slow outer-loop control processor. The QoS of received signals are compared to the target QoS. Depending on the comparison, the receiver generates a channel quality indicator (CQI) which is sent to the transmitter. The CQI is a one or two bit indicator which indicates to the transmitter to disable, adjust or maintain data transmission rates of particular sub-carriers, groups of sub-carriers per transmit antenna, or groups of sub-carriers across all transmit antennas. At the transmitter, the transmitted data rate is disabled, adjusted or maintained.

    Abstract translation: 一种用于优化与多输入多输出（MIMO）天线一起使用的正交频分复用（OFDM）系统的系统容量的方法和装置。 在接收机中，设置目标服务质量（QoS）度量和参考数据速率。 可以将目标QoS度量设置为预定值和/或可以通过慢速外部环路控制处理器相对于分组错误率（PER）动态地调整。 将接收到的信号的QoS与目标QoS进行比较。 根据比较，接收机产生发送到发射机的信道质量指示符（CQI）。 CQI是一个或两个比特指示符，其向发射机指示禁用，调整或维持特定子载波，每个发射天线的子载波组或跨所有发射天线的子载波组的数据传输速率。 在发射机处，传输的数据速率被禁用，调整或维护。

Patent Agency Ranking