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    Multiple-input, multiple-output (mimo) systems with multiple transmission modes
    12.
    发明专利
    Multiple-input, multiple-output (mimo) systems with multiple transmission modes 审中-公开
    具有多种传输模式的多输入多输出（MIMO）系统

    公开(公告)号：JP2013081188A

    公开(公告)日：2013-05-02

    申请号：JP2012248487

    申请日：2012-11-12

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： MEDVEDEV IRINA ,  WALTON JAY R ,  WALLACE MARK

    IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

    CPC classification number: H04B7/0417 ,  H04B7/043 ,  H04B7/0439 ,  H04B7/0443 ,  H04B7/061 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0691 ,  H04B7/0854 ,  H04L1/0002 ,  H04L1/0618 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0046 ,  H04L5/006 ,  H04W52/42

    Abstract: PROBLEM TO BE SOLVED: To provide techniques to transmit data on a number of transmission channels in a multi-channel communication system using multiple transmission schemes requiring less channel-state information (CSI).SOLUTION: Transmission schemes 200 may include: a partial-CSI transmission scheme that transmits a single data stream on each transmit antenna selected for use; and a "beam-forming" transmission scheme that allocates all transmit power to a single transmission channel having the best performance. Each transmission scheme may provide good or near-optimum performance for a specific range of operating conditions (or operating SNRs). Therefore, these multiple transmission schemes may then be combined in a piece-wise fashion to form a "multi-mode" transmission scheme that covers the full range of operating conditions supported by the MIMO system.

    Abstract translation: 要解决的问题：提供使用需要较少信道状态信息（CSI）的多个传输方案来在多信道通信系统中的多个传输信道上发送数据的技术。 解决方案：传输方案200可以包括：部分CSI传输方案，其在选择使用的每个发射天线上发射单个数据流; 以及将所有发射功率分配给具有最佳性能的单个传输信道的“波束形成”传输方案。 每个传输方案可以为特定范围的操作条件（或操作SNR）提供良好或接近最佳的性能。 因此，这些多个传输方案然后可以以分段方式组合以形成覆盖由MIMO系统支持的全部范围的操作条件的“多模式”传输方案。 版权所有（C）2013，JPO＆INPIT

    Method and apparatus for controlling transmission of communication system
    13.
    发明专利
    Method and apparatus for controlling transmission of communication system 有权
    控制通信系统传输的方法和装置

    公开(公告)号：JP2011182425A

    公开(公告)日：2011-09-15

    申请号：JP2011083932

    申请日：2011-04-05

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： WALTON JAY R ,  WALLACE MARK ,  HOLTZMAN JACK ,  ANTONIO FRANKLIN P

    IPC: H04J1/05 ,  H04W52/18 ,  H04B7/005 ,  H04B7/26 ,  H04J3/00 ,  H04J11/00 ,  H04J13/00 ,  H04W16/02 ,  H04W52/24 ,  H04W52/26 ,  H04W52/34

    CPC classification number: H04W52/343 ,  H04B17/336 ,  H04B17/382 ,  H04W52/24 ,  H04W52/241 ,  H04W52/244 ,  H04W52/267 ,  H04W52/286 ,  H04W52/346 ,  H04W72/1231 ,  H04W72/1242 ,  H04W72/1252

    Abstract: PROBLEM TO BE SOLVED: To provide a method for operating a large number of transmission devices in a radio communication system. SOLUTION: The method includes: segmenting usable system resources into a plurality of channels; defining a reuse scheme including a plurality of cells for the communication system; determining one or more characteristics for each of the cells in the reuse scheme; allocating a combination of channels to each of cells in the reuse scheme on the basis of one or more characteristics for which at least a cell is partially decided; and repeating decision and allocation in order to reflect the change in the communication system. The cells in the reuse scheme are each allocated with the channels of each set for transmission at a full power level. The cells in the reuse scheme are each allocated with channels of each set including one or more channels usable for transmission at a full power level and one or more channels usable for transmission at a reduce power level. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 解决的问题：提供一种在无线通信系统中操作大量发送装置的方法。 解决方案：该方法包括：将可用系统资源分割成多个信道; 定义包括用于通信系统的多个小区的重用方案; 确定所述重用方案中的每个小区的一个或多个特性; 基于至少一个小区被部分地决定的一个或多个特征，将信道的组合分配给重用方案中的每个小区; 并重复决策和分配，以反映通信系统的变化。 重新配置方案中的小区各自分配有用于在全功率电平下传输的每组的信道。 重用方案中的小区各自分配有每个组的信道，包括可用于在全功率电平下传输的一个或多个信道，以及可用于以降低功率电平进行传输的一个或多个信道。 版权所有（C）2011，JPO＆INPIT

    Adaptation rate control for ofdm communication system
    15.
    发明专利
    Adaptation rate control for ofdm communication system 有权
    OFDM通信系统的适应速率控制

    公开(公告)号：JP2010239653A

    公开(公告)日：2010-10-21

    申请号：JP2010132185

    申请日：2010-06-09

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： WALTON JAY R ,  KETCHUM JOHN W ,  HOWARD STEVEN J ,  WALLACE MARK

    IPC: H04J11/00 ,  H04L1/00 ,  H04Q7/38

    CPC classification number: H04L1/0015 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  Y02D50/10

    Abstract: PROBLEM TO BE SOLVED: To provide a technology for adaptively controlling a data transmission rate in a radio (e.g., OFDM) communication system.
    SOLUTION: In one viewpoint, various kinds of metrics may be derived and used to select a suitable rate for data transmission. Some kinds of metrics relate to different characteristics of a communication channel such as an SNR, a frequency selection degree, a time selection degree and the like. One kind of metrics relates to data transmission performance. In another viewpoint, the various kinds of metrics may be used in a different way to adaptively control the rate. Some metrics may be used for open-loop control, other metrics may be used for closed-loop control, and some may be used for both. For example, a channel metrics may be used to decide or select the rate, and a performance metrics may be used to decide whether or not to adjust the rate.
    COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于在无线电（例如，OFDM）通信系统中自适应地控制数据传输速率的技术。 解决方案：从一个角度来看，可以导出各种度量来用于选择用于数据传输的合适的速率。 某些度量涉及通信信道的不同特性，例如SNR，频率选择度，时间选择度等。 一种度量与数据传输性能有关。 另一方面，可以以不同的方式使用各种度量来自适应地控制速率。 一些度量可以用于开环控制，其他度量可以用于闭环控制，一些度量可以用于两者。 例如，可以使用信道度量来决定或选择速率，并且可以使用性能度量来决定是否调整速率。 版权所有（C）2011，JPO＆INPIT

    Method and device for processing data in multiple-input multiple-output (mimo) communication system using channel state information
    16.
    发明专利
    Method and device for processing data in multiple-input multiple-output (mimo) communication system using channel state information 有权
    用于使用信道状态信息在多输入多输出（MIMO）通信系统中处理数据的方法和装置

    公开(公告)号：JP2010136409A

    公开(公告)日：2010-06-17

    申请号：JP2010003249

    申请日：2010-01-08

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： WALTON JAY R ,  WALLACE MARK ,  KETCHUM JOHN W ,  HOWARD STEVEN J

    IPC: H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/12 ,  H04J11/00 ,  H04L1/00

    CPC classification number: H04B7/0417 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0854 ,  H04B7/10 ,  H04B7/12 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0071

    Abstract: PROBLEM TO BE SOLVED: To provide a technique to successively process received signals in a receiver unit and to adaptively process data in a transmitter unit based on channel state information available with an MIMO channel in an MIMO system for recovering transmitted data. SOLUTION: A successive cancellation receiver processing technique is used for processing the received signals and performing a number of iterations in order to provide a decoded data stream. For each iteration, input (e.g., received) signals for the iteration are processed to provide one or more symbol streams. One of the symbol streams is selected and processed to provide a decoded data stream. The interference due to the decoded data stream is removed (i.e., canceled) from the input signals provided to the next iteration. The channel characteristics are evaluated and informed to the source of the transmitter system to adjust processing (such as coding, modulation) of data prior to transmission (i.e., adaptation). COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种在接收机单元中连续处理接收信号并基于用于恢复发送数据的MIMO系统中的MIMO信道可用的信道状态信息自适应地处理发射机单元中的数据的技术。 解决方案：连续的取消接收器处理技术用于处理接收的信号并执行多次迭代以提供解码的数据流。 对于每次迭代，处理用于迭代的输入（例如，接收的）信号以提供一个或多个符号流。 选择并处理符号流中的一个以提供解码的数据流。 由于解码的数据流的干扰从提供给下一次迭代的输入信号中被去除（即，取消）。 对信道特性进行评估并通知给发射机系统的源，以便在传输（即，适配）之前调整数据的处理（例如编码，调制）。 版权所有（C）2010，JPO＆INPIT

    Iterative detection and decoding for mimo-ofdm system
    17.
    发明专利
    Iterative detection and decoding for mimo-ofdm system 审中-公开
    MIMO-OFDM系统的迭代检测和解码

    公开(公告)号：JP2010136404A

    公开(公告)日：2010-06-17

    申请号：JP2010000271

    申请日：2010-01-04

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： BJERKE BJORN A ,  KETCHUM JOHN W ,  WALTON JAY R

    IPC: H04J99/00 ,  H04B7/04 ,  H04J11/00 ,  H04L1/00 ,  H04L1/06 ,  H04L27/26

    CPC classification number: H04L1/005 ,  H04B7/0413 ,  H04B7/0854 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0059 ,  H04L1/0066 ,  H04L1/0071 ,  H04L1/06 ,  H04L5/0023 ,  H04L25/03171 ,  H04L25/03305 ,  H04L25/03891 ,  H04L25/067 ,  H04L27/2647

    Abstract: PROBLEM TO BE SOLVED: To provide techniques for iterative detection and decoding for a MIMO (Multi Input Multi Output)-OFDM (Orthogonal Frequency Division Multiplexing) system. SOLUTION: The iterative detection and decoding is performed by iteratively passing soft (multi-bit) "a priori" information between a detector and a decoder. The detector performs a detection function that is complementary to the symbol mapping and provides soft-decision symbols. "Extrinsic information" in the soft-decision symbols is then decoded to provide its extrinsic information, which comprises the a priori information used by the detector in the detection process. The detection and decoding may be iterated a number of times. The soft-decision symbols and the a priori information may be represented using log-likelihood ratios (LLRs). Techniques are provided to reduce the computational complexity associated with deriving the LLRs, including interference nulling to isolate each transmitted signal and "dual-maxima" approximation. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供MIMO（多输入多输出）-OFDM（正交频分复用）系统的迭代检测和解码技术。 解决方案：通过在检测器和解码器之间迭代地传递软（多位）“先验”信息来执行迭代检测和解码。 检测器执行与符号映射互补的检测功能，并提供软判决符号。 然后对软判决符号中的“外在信息”进行解码以提供其外在信息，其包括检测器在检测过程中使用的先验信息。 可以重复检测和解码多次。 可以使用对数似然比（LLR）来表示软判决符号和先验信息。 提供技术以减少与导出LLR相关联的计算复杂度，包括干扰归零以隔离每个发送的信号和“双最大值”近似。 版权所有（C）2010，JPO＆INPIT

    Signal processing using channel eigenmode decomposition and channel inversion for mimo system
    18.
    发明专利
    Signal processing using channel eigenmode decomposition and channel inversion for mimo system 审中-公开
    信道处理使用信道分解和信道反演进行MIMO系统

    公开(公告)号：JP2010136396A

    公开(公告)日：2010-06-17

    申请号：JP2009292682

    申请日：2009-12-24

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： KETCHUM JOHN W ,  WALTON JAY R

    IPC: H04J99/00 ,  H04B7/04 ,  H04L1/00 ,  H04L1/06 ,  H04L25/02 ,  H04L25/03

    CPC classification number: H04B7/0417 ,  H04B7/0439 ,  H04B7/0443 ,  H04B7/0626 ,  H04L1/0618 ,  H04L25/0202 ,  H04L25/03343 ,  H04L25/03834

    Abstract: PROBLEM TO BE SOLVED: To provide a method of signal processing using channel eigenmode decomposition and channel inversion for MIMO systems. SOLUTION: At a transmitter, channel eigen-decomposition is performed to determine eigenmodes of a MIMO channel and to derive a first set of steering vectors, channel inversion is performed to derive weights used to minimize ISI (inter-symbol interference) distortion, and water-pouring is performed to derive scaling values indicative of the transmit powers allocated to the eigenmodes. The first set of steering vectors, weights and scaling values are used to derive a pulse-shaping matrix, which is used to precondition modulation symbols. At a receiver, channel eigen-decomposition is performed to derive a second set of steering vectors, which are used to derive a pulse-shaping matrix used to condition received symbols such that orthogonal symbol streams are recovered. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供使用MIMO系统的信道本征模式分解和信道反转的信号处理方法。 解决方案：在发射机处，执行信道特征分解以确定MIMO信道的本征模式并导出第一组导引向量，执行信道反转以导出用于最小化ISI（符号间干扰）失真的权重 ，并且执行浇注以导出指示分配给本征模式的发射功率的缩放值。 第一组导引向量，权重和缩放值用于导出脉冲整形矩阵，其用于预处理调制符号。 在接收机处，执行信道特征分解以导出第二组导引向量，其用于导出用于调整接收到的符号的脉冲整形矩阵，使得正交符号流被恢复。 版权所有（C）2010，JPO＆INPIT

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