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    Multi-antenna transmission for spatial division multiple access
    22.
    发明专利
    Multi-antenna transmission for spatial division multiple access 有权
    用于空间多路访问的多天线传输

    公开(公告)号：JP2010183578A

    公开(公告)日：2010-08-19

    申请号：JP2010025725

    申请日：2010-02-08

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

    Inventor： WALTON J RODNEY ,  KETCHUM JOHN W ,  SMEE JOHN EDWARD ,  WALLACE MARK S ,  HOWARD STEVEN J

    IPC: H04J99/00 ,  H04B1/707 ,  H04B7/04 ,  H04B7/06 ,  H04J11/00 ,  H04L5/02 ,  H04Q7/36

    CPC classification number: H04B7/043 ,  H04B1/71072 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0421 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0697 ,  H04B17/309 ,  H04L5/023 ,  H04W16/28

    Abstract: PROBLEM TO BE SOLVED: To provide techniques for selecting a proper set of user terminals for simultaneous transmission, and transmitting and receiving data between the selected user terminals. SOLUTION: An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector for use by the terminal to transmit on the uplink. An "effective" uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供用于选择用于同时传输的适当的用户终端集合以及在所选择的用户终端之间发送和接收数据的技术。 解决方案：为每个终端获得上行链路信道响应矩阵，并对其进行分解，以获得终端在上行链路上使用的导引向量。 基于其导向向量及其信道响应矩阵，为每个终端形成“有效”上行链路信道响应向量。 基于其有效信道响应向量来评估多组终端，以确定用于上行链路传输的最佳集合。 每个选择的终端利用其导向向量对其数据符号流执行空间处理，并将其空间处理的数据符号流发送到接入点。 多个选择的终端通过其相应的MIMO信道同时将其数据符号流发送到接入点。 版权所有（C）2010，JPO＆INPIT

    Method and device for processing data in multiple-input multiple-output (mimo) communication system using channel state information
    23.
    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

    Time-domain transmit and receive processing with channel eigen-mode decomposition for mimo systems
    24.
    发明专利
    Time-domain transmit and receive processing with channel eigen-mode decomposition for mimo systems 有权
    用于MIMO系统的信道模式分解的时域发射和接收处理

    公开(公告)号：JP2010119134A

    公开(公告)日：2010-05-27

    申请号：JP2010019320

    申请日：2010-01-29

    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 ,  WALLACE MARK ,  HOWARD STEVEN J ,  WALTON JAY ROD

    IPC: H04J99/00 ,  H04B7/04 ,  H04L1/00 ,  H04L25/03 ,  H04L27/26

    CPC classification number: H04B7/0417 ,  H04B7/0443 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0029 ,  H04L25/03343 ,  H04L25/03834 ,  H04L27/2601 ,  H04L27/2647 ,  H04L2025/0349 ,  H04L2025/03605

    Abstract: PROBLEM TO BE SOLVED: To provide time-domain transmit and receive processing using channel eigen-mode decomposition for MIMO systems.
    SOLUTION: In an aspect, a time-domain implementation is provided which uses frequency-domain singular value decomposition and "water-pouring" results to derive time-domain pulse-shaping and beam-steering solutions at the transmitter and receiver. The singular value decomposition is performed at the transmitter to determine THE eigen-modes (i.e., spatial subchannels) of the MIMO channel and to derive a first set of steering vectors used to "precondition" modulation symbols. The singular value decomposition is also performed at the receiver to derive a second set of steering vectors used to precondition the received signals, such that orthogonal symbol streams are recovered at the receiver, which can simplify the receiver processing.
    COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：使用MIMO系统的信道本征模式分解来提供时域发射和接收处理。 解决方案：在一方面，提供了时域实现，其使用频域奇异值分解和“浇注”结果以在发射机和接收机处导出时域脉冲整形和波束导引解决方案。 在发射机处执行奇异值分解以确定MIMO信道的本征模式（即，空间子信道），并导出用于“调制前”调制符号的第一组导引向量。 奇异值分解也在接收机处执行以导出用于预处理接收信号的第二组导引向量，使得在接收机处恢复正交符号流，这可以简化接收机处理。 版权所有（C）2010，JPO＆INPIT

    Systems and methods for enhanced channel estimation in wireless communication systems
    26.
    发明专利
    Systems and methods for enhanced channel estimation in wireless communication systems 有权
    无线通信系统中增强信道估计的系统与方法

    公开(公告)号：JP2013081225A

    公开(公告)日：2013-05-02

    申请号：JP2012268170

    申请日：2012-12-07

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

    Inventor： BJORN VIERKE ,  HOWARD STEVEN J

    IPC: H04J99/00 ,  H04J11/00

    CPC classification number: H04L25/0212 ,  H04L27/2647

    Abstract: PROBLEM TO BE SOLVED: To provide methods and apparatus for enhancing estimation of channel response in a wireless communication system.SOLUTION: An apparatus comprises: a module to select one or more channels and determine an initial channel estimate on the basis of a received signal; a transformation module adapted to transform the initial channel estimate into an initial impulse response estimate; a filtering module adapted to generate a truncated initial impulse response estimate by setting to zero the samples in the initial impulse response estimate; and a maximum likelihood channel estimating module adapted to compute a time domain weighted impulse response estimate using the truncated time domain impulse response estimate for the selected channel and to compute a maximum likelihood channel estimate for the selected channel by transforming the time domain weighted impulse response estimate into the frequency domain.

    Abstract translation: 要解决的问题：提供用于增强无线通信系统中的信道响应估计的方法和装置。 解决方案：一种装置，包括：模块，用于选择一个或多个信道，并基于接收到的信号确定初始信道估计; 变换模块，其适于将初始信道估计转换为初始脉冲响应估计; 滤波模块，其适于通过将所述初始脉冲响应估计中的样本设置为零来产生截断的初始脉冲响应估计; 以及最大似然信道估计模块，其适于使用所选择的信道的截断的时域脉冲响应估计来计算时域加权的脉冲响应估计，并且通过变换所述时域加权的脉冲响应估计来计算所选择的信道的最大似然信道估计 进入频域。 版权所有（C）2013，JPO＆INPIT

    Sphere detection and rate selection for mimo communication
    27.
    发明专利
    Sphere detection and rate selection for mimo communication 有权
    MIMO通信的SPHERE检测和速率选择

    公开(公告)号：JP2013062833A

    公开(公告)日：2013-04-04

    申请号：JP2012236750

    申请日：2012-10-26

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

    Inventor： WALTON JAY RODNEY ,  WALLACE MARK S ,  HOWARD STEVEN J

    IPC: H04J99/00

    CPC classification number: H04L1/06 ,  H04L1/0631 ,  H04L25/03242 ,  H04L25/03292

    Abstract: PROBLEM TO BE SOLVED: To provide a data detection method with reduced complexity while achieving good performance in decoding of MIMO communication using a plurality of data streams.SOLUTION: Order of detecting data symbols sent in a MIMO communication is selected (412) based on at least one attribute of the data symbols, such as error probability, modulation scheme, and/or link margin. Sphere detection is performed (414) for the data symbols in the selected order. The log likelihood ratios (LLRs) for code bits of the data symbols are computed (416) based on candidate hypotheses for the data symbols.

    Abstract translation: 要解决的问题：提供具有降低的复杂性的数据检测方法，同时在使用多个数据流的MIMO通信的解码中实现良好的性能。 基于数据符号的至少一个属性（例如错误概率，调制方案和/或链路余量）来选择检测在MIMO通信中发送的数据符号的检测顺序（412）。 以所选顺序对数据符号进行球体检测（414）。 基于数据符号的候选假设，计算数据符号的码位的对数似然比（LLR）（416）。 版权所有（C）2013，JPO＆INPIT

    Single-burst acquisition for wireless communication
    28.
    发明专利
    Single-burst acquisition for wireless communication 有权
    无线通信的单次收购

    公开(公告)号：JP2012199941A

    公开(公告)日：2012-10-18

    申请号：JP2012106858

    申请日：2012-05-08

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

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

    IPC: H04J11/00 ,  H04J99/00

    CPC classification number: H04W52/42 ,  H04L27/2613 ,  H04L27/2659 ,  H04L27/266 ,  H04W52/286

    Abstract: PROBLEM TO BE SOLVED: To rapidly and accurately detect packets transmitted with different timing, frequency and transmit power, and acquire timing and frequency.SOLUTION: Based on signals from a receive antenna, using signals of electric power calculation 520 and a moving average 522 etc., a packet detector 526 determines the presence of a packet. Based on signals from delay-multiply-integrates 510 and 530, using phase calculation 534, a start-of-packet detector 536 detects the start of the packet. In addition, based on signals from delay-multiply-integrate 540, using phase calculation 544, a frequency error estimator 546 estimates a packet frequency error to be regarded as a frequency correction value. Similarly, an end-of-packet detector 556 detects the end of the packet.

    Abstract translation: 要解决的问题：快速准确地检测不同定时，频率和发射功率发送的分组，并获取定时和频率。 解决方案：基于来自接收天线的信号，使用电力计算520的信号和移动平均值522等，分组检测器526确定分组的存在。 基于来自延迟乘积分510和530的信号，使用相位计算534，分组检测器536检测分组的开始。 此外，基于来自延迟多重积分540的信号，使用相位计算544，频率误差估计器546将分组频率误差估计为频率校正值。 类似地，分组结束检测器556检测分组的结束。 版权所有（C）2013，JPO＆INPIT

    Sphere detection and rate selection for mimo transmission
    30.
    发明专利
    Sphere detection and rate selection for mimo transmission 有权
    MIMO传输的SPHERE检测和速率选择

    公开(公告)号：JP2012095296A

    公开(公告)日：2012-05-17

    申请号：JP2011229612

    申请日：2011-10-19

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

    Inventor： WALTON JAY RODNEY ,  WALLACE MARK S ,  HOWARD STEVEN J

    IPC: H04J99/00 ,  H04B7/04

    CPC classification number: H04L1/06 ,  H04L1/0631 ,  H04L25/03242 ,  H04L25/03292

    Abstract: PROBLEM TO BE SOLVED: To provide various techniques for performing sphere detection to recover data symbols sent in a MIMO transmission.SOLUTION: In an aspect, sphere detection is performed for data symbols generated with at least two modulation schemes. In another aspect, sphere detection is performed for the data symbols in an order based on at least one attribute of the data symbols such as error probabilities of the data symbols, modulation schemes used for the data symbols, and link margins for the data symbols. In yet another aspect, rates for multiple data streams detected with sphere detection are selected based on channel state information. The channel state information includes a channel estimate, a noise estimate, an interference estimate, a power measurement, and a signal quality estimate. After signal qualities of the data streams are estimated based on an upper triangular matrix used for sphere detection and/or an assumption that interference from data streams already detected is canceled, the rates for the data streams are selected based on the estimated signal qualities.

    Abstract translation: 要解决的问题：提供用于执行球体检测以恢复在MIMO传输中发送的数据符号的各种技术。 解决方案：在一个方面，对用至少两个调制方案产生的数据符号执行球体检测。 在另一方面，基于数据符号的至少一个属性（例如数据符号的错误概率，用于数据符号的调制方案）和数据符号的链接余量，以数量符号的顺序执行球体检测。 在另一方面，基于信道状态信息选择用球检测检测的多个数据流的速率。 信道状态信息包括信道估计，噪声估计，干扰估计，功率测量和信号质量估计。 在基于用于球体检测的上三角矩阵估计数据流的信号质量和/或已经检测到来自数据流的干扰的假设之后，基于所估计的信号质量来选择数据流的速率。 版权所有（C）2012，JPO＆INPIT

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