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    Time-domain transmit and receive processing with channel eigen-mode decomposition for mimo systems
    21.
    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：JP2009189045A

    公开(公告)日：2009-08-20

    申请号：JP2009102926

    申请日：2009-04-21

    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 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)2009,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“调制前缀”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）2009，JPO＆INPIT

    HIGH EFFICIENCY, HIGH PERFORMANCE COMMUNICATIONS SYSTEM EMPLOYING MULTI-CARRIER MODULATION
    24.
    发明申请
    HIGH EFFICIENCY, HIGH PERFORMANCE COMMUNICATIONS SYSTEM EMPLOYING MULTI-CARRIER MODULATION 审中-公开
    高性能，高性能通信系统采用多载波调制

    公开(公告)号：WO0171928A3

    公开(公告)日：2002-05-02

    申请号：PCT/US0109179

    申请日：2001-03-20

    Applicant: QUALCOMM INC

    Inventor： WALTON JAY R ,  WALLACE MARK ,  JALALI AHMAD

    IPC: H04J11/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/12 ,  H04B7/26 ,  H04J15/00 ,  H04L25/02 ,  H04L27/26 ,  H04Q7/38

    CPC classification number: H04B7/0417 ,  H04B7/06 ,  H04B7/0626 ,  H04B7/08 ,  H04B7/12 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0248 ,  H04L27/0008 ,  H04L27/2053 ,  H04L27/34

    Abstract: Transmitter and receiver units for use in a communications system and configurable to provide antenna, frequency, or temporal diversity, or a combination thereof, for transmitted signals. The transmitter unit includes a system data processor, one or more modulators, and one or more antennas. The system data processor receives and partitions an input data stream into a number of channel data streams and further processes the channel data streams to generate one or more modulation symbol vector streams. Each modulation symbol vector stream includes a sequence of modulation symbol vectors representative of data in one or more channel data streams. Each modulator receives and modulates a respective modulation symbol vector stream to provide an RF modulated signal, and each antenna receives and transmits a respective RF modulated signal. Each modulator may include an inverse (fast) Fourier transform (IFFT) and a cyclic prefix generator. The IFFT generates time-domain representations of the modulation symbol vectors, and the cyclic prefix generator repeats a portion of the time-domain representation of each modulation symbol vector. The channel data streams are modulated using multi-carrier modulation, e.g., OFDM modulation. Time division multiplexing (TDM) may also be used to increase flexibility.

    Abstract translation: 发射机和接收机单元，用于通信系统，并可配置为提供发射信号的天线，频率或时间分集或其组合。 发射机单元包括系统数据处理器，一个或多个调制器和一个或多个天线。 系统数据处理器接收输入数据流并将其分割成多个信道数据流，并进一步处理信道数据流以生成一个或多个调制符号向量流。 每个调制符号向量流包括表示一个或多个信道数据流中的数据的调制符号向量的序列。 每个调制器接收并调制相应的调制符号向量流以提供RF调制信号，并且每个天线接收和发送相应的RF调制信号。 每个调制器可以包括逆（快速）傅里叶变换（IFFT）和循环前缀生成器。 IFFT生成调制符号向量的时域表示，并且循环前缀生成器重复每个调制符号向量的时域表示的一部分。 使用多载波调制（例如，OFDM调制）来调制信道数据流。 时分复用（TDM）也可用于增加灵活性。

    ADAPTIVE LINEAR EQUALISATION FOR WALSH-MODULATED
    25.
    发明申请
    ADAPTIVE LINEAR EQUALISATION FOR WALSH-MODULATED 审中-公开
    自适应线性均衡化用于WALSH调制

    公开(公告)号：WO0215502A3

    公开(公告)日：2002-08-08

    申请号：PCT/US0124138

    申请日：2001-08-01

    Applicant: QUALCOMM INC

    Inventor： SMEE JOHN E ,  JALALI AHMAD ,  LING FUYUN ,  WALLACE MARK

    IPC: H04L27/01 ,  H04B1/7097 ,  H04B7/005 ,  H04L25/03 ,  H04L27/22 ,  H04B1/707

    CPC classification number: H04B1/7097 ,  H04L25/03038 ,  H04L2025/03375 ,  H04L2025/03477

    Abstract: A receive filter receives signals from a communication channel. The received signals correspond to original Walsh covered chip sequences transmitted through the communication channel to the receive filter. The received signals are processed by an equalizer to generate a soft estimate of chip sequences corresponding to the original Walsh covered chip sequences. An N chip Walsh decover is then utilized to generate a soft estimate of code symbols corresponding to the soft estimate of the chip sequences. A number of symbol slicers are then used in parallel to produce a hard estimate of the code symbols corresponding to the soft estimate of code symbols generated by the N chip Walsh decover. Thereafter an N chip Walsh cover is used to generate a hard estimate of chip sequences corresponding to the hard estimate of the code symbols generated by the symbol slicers. The hard estimate of the chip sequences generated with the aid of the N chip Walsh cover, and the soft estimate of the chip sequences generated by the equalizer, are used to generate a tracking mode error signal to adapt the response of the equalizer to the received signals.

    Abstract translation: 接收滤波器从通信信道接收信号。 接收的信号对应于通过通信信道发送到接收滤波器的原始沃尔什覆盖码片序列。 所接收的信号由均衡器处理以产生对应于原始沃尔什覆盖码片序列的码片序列的软估计。 然后利用N个芯片沃尔什解密来产生对应于芯片序列的软估计的码符号的软估计。 然后，并行地使用多个符号限幅器，以产生对应于由N个芯片沃尔什覆盖生成的码符号的软估计对应的码符号的硬估计。 此后，使用N个码片沃尔什覆盖来产生对应于符号限幅器产生的码符号的硬估计的码片序列的硬估计。 借助于N芯片沃尔什覆盖生成的芯片序列的硬估计和由均衡器产生的芯片序列的软估计被用于产生跟踪模式误差信号，以使均衡器的响应适应于接收到的 信号。

    METHOD AND APPARATUS FOR CONTROLLING TRANSMISSIONS OF A COMMUNICATIONS SYSTEM
    26.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING TRANSMISSIONS OF A COMMUNICATIONS SYSTEM 审中-公开
    控制通信系统传输的方法和装置

    公开(公告)号：WO0176098A3

    公开(公告)日：2002-08-01

    申请号：PCT/US0109325

    申请日：2001-03-20

    Applicant: QUALCOMM INC

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

    IPC: H04J1/05 ,  H04B7/005 ,  H04B7/26 ,  H04J3/00 ,  H04J11/00 ,  H04W52/24 ,  H04W52/26 ,  H04W52/34 ,  H04Q7/36 ,  H04Q7/38

    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: In some aspects, each cell in the communications system can be designed to operate in accordance with a set of back-off factors that identify the reductions in peak transmit power levels for the channels associated with the back-off factors. The back-off factors are defined to provide the required power to a large percentage of the users while reducing the amount of interference. In some other aspects, the cells operate using an adaptive reuse scheme that allows the cells to efficiently allocate and reallocate the system resources to reflect changes in the system. A reuse scheme is initially defined and resources are allocated to the cells. During operation, changes in the operating conditions of the system are detected and the reuse scheme is redefined as necessary based on the detected changes. For example, the loading conditions of the cells can be detected, and the resources can be reallocated and/or the reuse scheme can be redefined. In yet other aspects, techniques are provided to efficiency schedule data transmissions and to assign channels to users. Data transmissions can be scheduled based on user priorities, some fairness criteria, system requirements, and other factors. Users are assigned to available channels based on a number of channel assignment schemes. Channel metrics are also provided, which can be used to prioritize users and for channel assignments.

    Abstract translation: 在一些方面，通信系统中的每个小区可以被设计为根据一组回退因子进行操作，所述回退因子识别与所述回退因素相关联的信道的峰值发射功率水平的降低。 限制因素被定义为为大量用户提供所需的功率，同时减少干扰量。 在一些其他方面，小区使用允许小区有效地分配和重新分配系统资源以反映系统中的变化的自适应重用方案来操作。 最初定义了重用方案，并将资源分配给小区。 在操作期间，检测到系统的操作条件的变化，并且根据检测到的改变根据需要重新定义重新使用方案。 例如，可以检测小区的负载条件，并且可以重新分配资源和/或重新定义重用方案。 在其他方面，提供了技术来提高调度数据传输并向用户分配信道。 数据传输可以根据用户优先级，一些公平标准，系统要求和其他因素进行调度。 基于多个信道分配方案将用户分配给可用信道。 还提供频道指标，可用于对用户和频道分配进行优先级排序。

    Procedimiento y aparato para utilizar información de estado de canal en un sistema de comunicación inalámbrica
    28.
    发明专利
    Procedimiento y aparato para utilizar información de estado de canal en un sistema de comunicación inalámbrica 未知

    公开(公告)号：ES2734517T3

    公开(公告)日：2019-12-10

    申请号：ES10176954

    申请日：2002-03-22

    Applicant: QUALCOMM INC

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

    IPC: H04B7/0417 ,  H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L5/00 ,  H04L25/02 ,  H04L25/03 ,  H04L27/26

    Abstract: Una unidad receptora para un sistema de comunicación de múltiples entradas y múltiples salidas, MIMO (100), que comprende: una pluralidad de antenas receptoras (152A... 152R) configuradas para recibir señales recibidas a través de diferentes canales espaciales; un procesador de MIMO (156A) configurado para proporcionar estimaciones de símbolos de modulación en las señales; y un procesador de información de estado de canal, CSI, (520), que forma parte del procesador de MIMO, configurado para proporcionar información de señal a ruido más interferencia, SNR, para los diferentes canales espaciales; y un procesador de datos de transmisión (162) configurado para recibir y procesar la información de SNR para la transmisión; en el que el procesador de CSI está configurado para proporcionar la información de SNR para cada subportadora de una señal OFDM multiplexada por división ortogonal de frecuencia, recibida en el receptor basándose en un total de información de SNR que es igual a la suma de la SNR de las señales de la pluralidad de antenas receptoras.

    Procedimiento y aparato para generar señales piloto en un sistema MIMO
    29.
    发明专利
    Procedimiento y aparato para generar señales piloto en un sistema MIMO 未知

    公开(公告)号：ES2701182T3

    公开(公告)日：2019-02-21

    申请号：ES10009631

    申请日：2001-07-11

    Applicant: QUALCOMM INC

    Inventor： JALALI AHMAD ,  WALTON JAY ,  WALLACE MARK

    IPC: H04J11/00 ,  H04L5/00 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04L5/02 ,  H04L12/801 ,  H04L12/851 ,  H04L27/26

    Abstract: Un procedimiento para generar flujos de datos en un sistema de comunicación inalámbrica de múltiples entradas y múltiples salidas, MIMO, que tiene una pluralidad de usuarios, que comprende: obtener al menos un flujo de datos (X1... XK) para cada usuario de la pluralidad de usuarios; obtener una secuencia ortogonal (W1... WK) para cada usuario en la pluralidad de usuarios; escalar el al menos un flujo de datos (X1... XK) para cada usuario con un factor de escalado respectivo (G1... GK) para proporcionar un ajuste de potencia para el al menos un flujo de datos (X1... XK); y multiplicar el al menos un flujo de datos escalado (X1... XK) para cada usuario con la secuencia ortogonal (W1... WK) para que el usuario obtenga al menos un flujo de datos multiplicado para cada uno de la pluralidad de usuarios; combinar el al menos un flujo de datos multiplicado para cada uno de la pluralidad de usuarios para generar un flujo de datos combinado; e intercalar los datos en el flujo de datos combinado para proporcionar diversidad temporal.

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