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    Sphere detection and rate selection for mimo transmission
    31.
    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

    Receiver for wireless communication network with extended range
    32.
    发明专利
    Receiver for wireless communication network with extended range 有权
    接收无线通信网络的扩展范围

    公开(公告)号：JP2011199873A

    公开(公告)日：2011-10-06

    申请号：JP2011062826

    申请日：2011-03-22

    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

    IPC: H04B1/707 ,  H04B7/02

    CPC classification number: H04L1/0072 ,  H04B1/7073 ,  H04B1/7075 ,  H04L1/0045 ,  H04L25/0204 ,  H04L25/0216 ,  H04L25/0228 ,  H04L27/0006 ,  H04L27/0014 ,  H04L2027/0038 ,  H04L2027/0065 ,  H04L2027/0097

    Abstract: PROBLEM TO BE SOLVED: To provide a receiver for a wireless communication network with an extended range.SOLUTION: Techniques for detecting and demodulating a signal/transmission are described. Signal detection is performed in multiple stages using different types of signal processing, e.g., using time-domain correlation for a first stage, frequency-domain processing for a second stage, and time-domain processing for a third stage. For the first stage, products of symbols are generated for at least two different delays, correlation between the products for each delay and known values is performed, and correlation results for all delays are combined and used to declare the presence of a signal. For demodulation, the timing of input samples is adjusted to obtain timing-adjusted samples. A frequency offset is estimated and removed from the timing-adjusted samples to obtain frequency-corrected samples, which are processed with a channel estimate to obtain detected symbols.

    Abstract translation: 要解决的问题：提供具有扩展范围的无线通信网络的接收机。解决方案：描述用于检测和解调信号/传输的技术。 使用不同类型的信号处理，例如使用第一级的时域相关，第二级的频域处理，以及第三级的时域处理，来进行信号检测。 对于第一阶段，对于至少两个不同的延迟生成符号的乘积，执行每个延迟的乘积与已知值之间的相关性，并且将所有延迟的相关结果组合并用于声明信号的存在。 为了进行解调，调整输入样本的定时以获得经时间调整的样本。 频率偏移被估计并从定时调整的样本中去除以获得频率校正的样本，其被采用信道估计来处理以获得检测到的符号。

    Efficient computation of spatial filter matrices for steering transmit diversity in mimo communication system
    33.
    发明专利
    Efficient computation of spatial filter matrices for steering transmit diversity in mimo communication system 有权
    MIMO通信系统中转移发射多样性的空间滤波器矩阵的有效计算

    公开(公告)号：JP2011188507A

    公开(公告)日：2011-09-22

    申请号：JP2011091000

    申请日：2011-04-15

    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 ,  WALTON JAY RODNEY ,  HOWARD STEVEN J

    IPC: H04J99/00 ,  H04B7/04 ,  H04B7/08

    CPC classification number: H04B7/0417 ,  H04B7/0626 ,  H04B7/0697 ,  H04B7/0854

    Abstract: PROBLEM TO BE SOLVED: To efficiently perform spatial processing for improving characteristics in a multiple input multiple output system. SOLUTION: A first spatial filter matrix for a first transmission span is derived, a first initial spatial filter matrix for a second transmission span is determined on the basis of the first spatial filter matrix, a second spatial filter matrix for the second transmission span is derived on the basis of the first initial spatial filter matrix, thereby deriving spatial filter matrices in a wireless MIMO communication system. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：为了有效地执行用于改善多输入多输出系统中的特性的空间处理。 导出用于第一传输跨度的第一空间滤波器矩阵，基于第一空间滤波器矩阵确定用于第二传输跨度的第一初始空间滤波器矩阵，用于第二传输的第二空间滤波器矩阵 跨度是基于第一初始空间滤波器矩阵导出的，从而导出无线MIMO通信系统中的空间滤波器矩阵。 版权所有（C）2011，JPO＆INPIT

    Receiver spatial processing for eigenmode transmission in mimo system
    35.
    发明专利
    Receiver spatial processing for eigenmode transmission in mimo system 有权
    MIMO系统中的接收机传输的接收空间处理

    公开(公告)号：JP2011010332A

    公开(公告)日：2011-01-13

    申请号：JP2010172439

    申请日：2010-07-30

    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 S ,  WALTON J RODNEY ,  HOWARD STEVEN J

    IPC: H04J99/00 ,  H04B7/04 ,  H04B7/08 ,  H04L1/06 ,  H04L25/02 ,  H04L27/26

    CPC classification number: H04B7/0417 ,  H04B7/0854 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/06 ,  H04L25/0206 ,  H04L27/2601

    Abstract: PROBLEM TO BE SOLVED: To provide a spatial processing method for a receiver in a MIMO system.SOLUTION: In the spatial processing method, multiple received symbol streams are obtained for multiple data symbol streams transmitted through the multiple spatial channels of a MIMO channel. Spatial processing is performed in a transmitter with steering vectors, that is, estimates of transmitter steering vectors required to orthogonalize the multiple spatial channels, and spatial processing is performed on the multiple received symbol streams with a spatial filter to obtain symbol streams for multiple filters, that is, estimates of the multiple data symbol streams. Further, in the spatial processing method, response is obtained for the spatial filter based on an MMSE criterion for minimizing a mean square error between the symbol streams for the filters and the data symbol streams.

    Abstract translation: 要解决的问题：提供MIMO系统中的接收机的空间处理方法。解决方案：在空间处理方法中，通过MIMO信道的多个空间信道发送的多个数据符号流获得多个接收符号流。 在具有导向向量的发射机中执行空间处理，即，使多个空间信道正交化所需的发射机导向矢量的估计，并且对具有空间滤波器的多个接收符号流执行空间处理，以获得用于多个滤波器的符号流， 即多个数据符号流的估计。 此外，在空间处理方法中，基于用于最小化用于滤波器的符号流和数据符号流之间的均方误差的MMSE准则，获得针对空间滤波器的响应。

    Mimo closed-loop rate control for a communication system
    36.
    发明专利
    Mimo closed-loop rate control for a communication system 有权
    用于MIMO通信系统的闭环速率控制

    公开(公告)号：JP2010268456A

    公开(公告)日：2010-11-25

    申请号：JP2010108586

    申请日：2010-05-10

    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

    IPC: H04J99/00 ,  H04B7/04

    CPC classification number: H04B7/0619 ,  H04B7/0417 ,  H04L1/0002 ,  H04L1/0003 ,  H04L1/0006 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/06 ,  H04L1/208 ,  H04L27/2601 ,  Y02D50/10

    Abstract: PROBLEM TO BE SOLVED: To provide a method of executing closed-loop control for an MIMO system. SOLUTION: Rate control of an MIMO system is achieved using an inner loop that selects rates and an outer loop that regulates the operation of the inner loop. For the inner loop, SNR estimates are obtained on a data stream basis based on received pilot symbols and/or received data symbols. An effective SNR is derived for each data stream based on the SNR estimates, a diversity order, an MIMO backoff factor, and an outer loop backoff factor for the data stream. The rates are then selected for the data streams based on the effective SNRs for the data streams. The outer loop adjusts the outer loop backoff factor for each data stream based on the performance (e.g., packet errors and/or decoder metrics) for the data stream. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供对MIMO系统执行闭环控制的方法。 解决方案：使用选择速率的内部环路和调节内部环路的操作的外部环路来实现MIMO系统的速率控制。 对于内循环，基于接收的导频符号和/或接收的数据符号，在数据流基础上获得SNR估计。 基于用于数据流的SNR估计，分集阶数，MIMO退避因子和外环回退因子，为每个数据流导出有效SNR。 然后基于数据流的有效SNR选择数据流的速率。 外部环路基于数据流的性能（例如，分组错误和/或解码器度量）来调整每个数据流的外环回退系数。 版权所有（C）2011，JPO＆INPIT

    Method, apparatus and system for medium access control
    39.
    发明专利
    Method, apparatus and system for medium access control 有权
    方法，中等接入控制的装置和系统

    公开(公告)号：JP2010200363A

    公开(公告)日：2010-09-09

    申请号：JP2010106700

    申请日：2010-05-06

    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 S ,  WALTON RODNEY J ,  NANDA SANJIV

    IPC: H04W80/02 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08

    CPC classification number: H04L29/06 ,  H04L69/32 ,  H04L69/324 ,  H04L69/325

    Abstract: PROBLEM TO BE SOLVED: To provide a method, an apparatus and a system for medium access control. SOLUTION: Embodiments adapted to MAC processing for the efficient use of a high throughput system are disclosed. In one embodiment, an apparatus includes a first layer for receiving one or a plurality of packets from one or plurality of data flows and for generating one or a plurality of first layer Protocol Data Units (PDUs) from one or the plurality of packets. In another embodiment, a second layer is arranged for generating one or a plurality of MAC frames on the basis of one or the plurality of MAC layer PDUs. Moreover, in another embodiment, a MAC frame is arranged for transmitting one or a plurality of MAC layer PDUs. The MAC frame may include a control channel for transmitting one or a plurality of allocations. The MAC frame may also include one or a plurality of traffic segments according to allocation. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种用于媒体访问控制的方法，装置和系统。 公开了适用于高效率使用高吞吐量系统的MAC处理的实施例。 在一个实施例中，一种装置包括用于从一个或多个数据流接收一个或多个分组并用于从一个或多个分组生成一个或多个第一层协议数据单元（PDU）的第一层。 在另一个实施例中，第二层被安排用于基于一个或多个MAC层PDU生成一个或多个MAC帧。 此外，在另一个实施例中，布置MAC帧以发送一个或多个MAC层PDU。 MAC帧可以包括用于发送一个或多个分配的控制信道。 MAC帧还可以根据分配包括一个或多个业务段。 版权所有（C）2010，JPO＆INPIT

    Continuous beamforming for mimo-ofdm system
    40.
    发明专利
    Continuous beamforming for mimo-ofdm system 审中-公开
    用于MIMO-OFDM系统的连续波束

    公开(公告)号：JP2010178352A

    公开(公告)日：2010-08-12

    申请号：JP2010040561

    申请日：2010-02-25

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

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

    IPC: H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/10 ,  H04L5/02 ,  H04L27/26

    CPC classification number: H04B7/0617 ,  H04B7/0408 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/0671

    Abstract: PROBLEM TO BE SOLVED: To perform continuous beamforming for a MIMO-OFDM system. SOLUTION: A transmitting entity performs spatial processing on data symbols for each subband with an eigenmode matrix, a steering matrix, or an identity matrix. The data symbols may be sent on orthogonal spatial channels by using the eigenmode matrix, on different spatial channels by using the steering matrix, or from different transmit antennas by using the identity matrix. The transmitting entity further performs beamforming on the spatially processed symbols, in the frequency domain or time domain, prior to transmission from the multiple transmit antennas. A receiving entity performs the complementary processing to recover the data symbols sent by the transmitting entity. Moreover, the receiving entity may derive a spatial filter matrix for each subband based on a MIMO channel response for that subband and perform receiver spatial processing for the subband by using the spatial filter matrix. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：为MIMO-OFDM系统执行连续波束成形。 解决方案：发送实体对具有本征模式矩阵，导向矩阵或单位矩阵的每个子带的数据符号执行空间处理。 数据符号可以在正交空间信道上通过使用本征模式矩阵，在不同的空间信道上使用导引矩阵，或者通过使用单位矩阵从不同的发射天线发送。 在从多个发射天线的发射之前，发射实体在频域或时域中进一步对空间处理的符号执行波束成形。 接收实体执行补充处理以恢复由发送实体发送的数据符号。 此外，接收实体可以基于该子带的MIMO信道响应导出每个子带的空间滤波器矩阵，并且通过使用空间滤波器矩阵对子带执行接收机空间处理。 版权所有（C）2010，JPO＆INPIT

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