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    METHOD AND APPARATUS FOR SIGNAL ACQUISITION AND CHANNEL ESTIMATION USING MULTIPLE ANTENNAS
    151.
    发明专利
    METHOD AND APPARATUS FOR SIGNAL ACQUISITION AND CHANNEL ESTIMATION USING MULTIPLE ANTENNAS 未知

    公开(公告)号：CA2187790A1

    公开(公告)日：1996-09-12

    申请号：CA2187790

    申请日：1996-01-11

    Applicant: MOTOROLA INC

    Inventor： STEWART KENNETH A

    IPC: H04B1/707 ,  H04B7/24 ,  H04Q7/38 ,  H04B1/69 ,  H04B7/08 ,  H04B1/18

    Abstract: A method and apparatus is provided for generating a decision value (809) for use in signal acquisition and channel estimation. In a first embodiment a receiver (850) is provided including at least two spatially diverse antennas (600, 601) which can receive different, e.g. consecutive, segments of the same signal, a signal characteristic (e.g., energy) determination stage (840) for processing the different segments to determine the separate energy values for the segments, and an accumulator 1808) for accumulating the energy values so as to form the decision value or statistic (809). Additional embodiments are also provided.

    152.
    发明专利
    未知

    公开(公告)号：FI960966A0

    公开(公告)日：1996-03-01

    申请号：FI960966

    申请日：1996-03-01

    Applicant: MOTOROLA INC

    Inventor： STEWART KENNETH A ,  LOVE ROBERT T

    IPC: H03D3/00 ,  H04B1/26 ,  H04B

    Abstract: An efficient apparatus for performing frequency conversion from a final IF frequency to a baseband frequency is described. A counter (401) generates two logical signals G1 (402) and G2 (403) which are passed to an exclusive-OR gate (404) and a multiplexer (406). When a control signal (411) is deasserted, multiplexer (406) passes signal G1 to I1 and signal G2 to I2; when control signal (411) is asserted, multiplexer (406) passes binary signal G1 to I2 (410) and signal G2 to I1 (407). Similarly, multiplexer (405) swaps its input real and imaginary samples when the output of exclusive-OR gate (404) is asserted; otherwise, it performs no operation on its input samples. Signals I1 (407) and I2 (410) are used to control arithmetic inverters (408) and (409) respectively. When the controlling signal for either inverter is asserted, the inverter performs arithmetic inversion, otherwise it performs no operation.

    APPARATUS FOR PERFORMING FREQUENCY CONVERSION IN A COMMUNICATION SYSTEM
    153.
    发明专利
    APPARATUS FOR PERFORMING FREQUENCY CONVERSION IN A COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2167702A1

    公开(公告)日：1996-01-18

    申请号：CA2167702

    申请日：1995-05-26

    Applicant: MOTOROLA INC

    Inventor： STEWART KENNETH A ,  LOVE ROBERT T

    IPC: H03D3/00 ,  H04B1/26 ,  H04L27/00 ,  H03K5/00

    Abstract: An efficient apparatus for performing frequency conversion from a final IF frequency to a baseband frequency is described. A counter (401) generates two logical signals G1 (402) and G2 (403) which are passed to an exclusive-OR gate (404) and a multiplexer (406). When a control signal (411) is deasserted, multiplexer (406) passes signal G1 to I1 and signal G2 to I2; when control signal (411) is asserted, multiplexer (406) passes binary signal G1 to I2 (410) and signal G2 to I1 (407). Similarly, multiplexer (405) swaps its input real and imaginary samples when the output of exclusive-OR gate (404) is asserted; otherwise, it performs no operation on its input samples. Signals I1 (407) and I2 (410) are used to control arithmetic inverters (408) and (409) respectively. When the controlling signal for either inverter is asserted, the inverter performs arithmetic inversion, otherwise it performs no operation.

    METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEM
    155.
    发明申请
    METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
    用于无线通信系统中的干扰消除的方法和设备

    公开(公告)号：WO2009137250A3

    公开(公告)日：2010-01-07

    申请号：PCT/US2009040755

    申请日：2009-04-16

    Applicant: MOTOROLA INC ,  SUDARSHAN PALLAV ,  STEWART KENNETH A ,  ZHUANG XIANGYANG

    Inventor： SUDARSHAN PALLAV ,  STEWART KENNETH A ,  ZHUANG XIANGYANG

    IPC: H04L25/03

    CPC classification number: H04L25/0204 ,  H04L5/0007 ,  H04L5/0048 ,  H04L25/021 ,  H04L25/0228 ,  H04L25/0242 ,  H04L27/2605 ,  H04L27/2647 ,  H04W72/085

    Abstract: A mobile device estimates a data symbol from a received signal by using one or more interference cancellation algorithms. For one interference cancellation algorithm, the mobile device calculates (302) a Channel State Information (CSI) of an interfering sector and calculates (304) a CSI of a serving sector at a different time. The mobile device then determines (310) a correction factor to the CSI of the interfering sector by, for example, estimating a Doppler speed and a time difference between a first time interval like a preamble symbol and a second time interval like any symbol of interest in the data zone. Using the correction factor, the mobile device updates outdated interference information. The mobile device can cancel interference in the received signal distorted by co-channel interference by using the updated interference information. Also, the mobile device can be configured to combine results of multiple interference cancellation algorithms based on the applicability of the individual interference cancellation algorithms in particular scenarios.

    Abstract translation: 移动设备通过使用一个或多个干扰消除算法来估计来自接收信号的数据符号。 对于一种干扰消除算法，移动设备计算（302）干扰扇区的信道状态信息（CSI），并计算（304）不同时间的服务扇区的CSI。 然后，移动设备通过例如估计第一时间间隔（如前导符号）和第二时间间隔（如任何感兴趣的符号）之间的多普勒速度和时间差来确定（310）对干扰扇区的CSI的校正因子 在数据区域。 使用校正因子，移动设备更新过时的干扰信息。 通过使用更新的干扰信息，移动设备可以消除由于同信道干扰而失真的接收信号中的干扰。 而且，移动设备可以被配置为基于各个干扰消除算法在特定场景中的适用性来组合多个干扰消除算法的结果。

    SYNCHRONIZATION FOR A WIRELESS COMMUNICATION DEVICE USING MULTIPLE SYNCHRONIZATION CHANNELS
    157.
    发明申请
    SYNCHRONIZATION FOR A WIRELESS COMMUNICATION DEVICE USING MULTIPLE SYNCHRONIZATION CHANNELS 审中-公开
    使用多个同步通道的无线通信设备的同步

    公开(公告)号：WO2008042575A2

    公开(公告)日：2008-04-10

    申请号：PCT/US2007078388

    申请日：2007-09-13

    Applicant: MOTOROLA INC ,  STEWART KENNETH A ,  CLASSON BRIAN K ,  KUCHIBHOTLA RAVI ,  LOVE ROBERT T ,  BAUM KEVIN L

    Inventor： STEWART KENNETH A ,  CLASSON BRIAN K ,  KUCHIBHOTLA RAVI ,  LOVE ROBERT T ,  BAUM KEVIN L

    CPC classification number: H04W56/0035 ,  H04B1/70735 ,  H04B2201/70702 ,  H04J11/0069 ,  H04L27/2655 ,  H04L27/2657 ,  H04L27/2675

    Abstract: A method (400, 500) and apparatus for synchronization for a wireless communication device (300) using multiple synchronization channels. An initial cell search can be performed (420) by the wireless communication device (300). During the initial cell search, a primary synchronization symbol can be acquired (430) only on a center synchronization channel of a plurality of synchronization channels. The plurality of synchronization channels can include the center synchronization channel and a plurality of secondary synchronization channels. The primary synchronization symbol can be associated with the plurality of secondary synchronization channels. A frequency translation can be executed (460) to change a receive channel to acquire one of the secondary synchronization channels.

    Abstract translation: 一种用于使用多个同步信道的无线通信设备（300）同步的方法（400,500）。 可以由无线通信设备（300）执行初始小区搜索（420）。 在初始小区搜索期间，只能在多个同步信道的中心同步信道上获取（430）主要同步符号。 多个同步信道可以包括中心同步信道和多个次同步信道。 主同步符号可以与多个次同步信道相关联。 可以执行频率转换（460）以改变接收频道以获取次同步信道之一。

    APPARATUS AND METHOD FOR BROADCASTING DATA
    158.
    发明申请
    APPARATUS AND METHOD FOR BROADCASTING DATA 审中-公开
    用于广播数据的装置和方法

    公开(公告)号：WO2007124223A2

    公开(公告)日：2007-11-01

    申请号：PCT/US2007064653

    申请日：2007-03-22

    Applicant: MOTOROLA INC ,  STEWART KENNETH A ,  BACHU RAJA S ,  BUCKLEY MICHAEL E ,  LOVE ROBERT T ,  SCHORMAN ERIC R ,  SMOLINSKE JEFFREY C

    Inventor： STEWART KENNETH A ,  BACHU RAJA S ,  BUCKLEY MICHAEL E ,  LOVE ROBERT T ,  SCHORMAN ERIC R ,  SMOLINSKE JEFFREY C

    IPC: H04B7/00

    CPC classification number: H04B7/022 ,  H04W4/06

    Abstract: Disclose is a synchronized wireless communication network (100) operating in single frequency network mode comprising a first base station (502) broadcasting, on a first channel, broadcast data and a common sequence (508) that is generated from a first channel identifier, and wherein the first base station transmits data on a common control channel. A second base station (510), adjacent to the first base station and synchronized with the first base station, the second base station simultaneously broadcasting on the first channel the broadcast data and the common sequence, and wherein the second base station transmits data on a common control channel.

    Abstract translation: Disclose是在单频网络模式下工作的同步无线通信网络（100），包括在第一信道上广播从第一信道标识符生成的广播数据和公共序列（508）的第一基站（502），以及 其中所述第一基站在公共控制信道上发送数据。 第二基站（510），与第一基站相邻并与第一基站同步，第二基站同时在第一信道上广播广播数据和公共序列，并且其中第二基站在一个 公共控制通道。

    METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM
    159.
    发明申请
    METHOD AND APPARATUS FOR INITIAL ACQUISITION AND CELL SEARCH FOR AN OFDMA SYSTEM 审中-公开
    用于OFDMA系统的初始获取和细胞搜索的方法和装置

    公开(公告)号：WO2007092692A2

    公开(公告)日：2007-08-16

    申请号：PCT/US2007061179

    申请日：2007-01-27

    Applicant: MOTOROLA INC ,  AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

    Inventor： AKITA HIDENORI ,  BAUM KEVIN L ,  CLASSON BRIAN K ,  FUKUTA MASAYA ,  HAYASHI HIROSHI ,  NANGIA VIJAY ,  LOVE ROBERT T ,  STEWART KENNETH A

    CPC classification number: H04W48/16 ,  H04J11/0073 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/266 ,  H04L27/2663

    Abstract: A method and apparatus is provided for transmitting an orthogonal frequency domain multiple access (OFDMA) signal including a synchronization channel signal transmitted within a localized portion of a bandwidth of the OFDMA signal (818), the synchronization channel signal having predetermined time domain symmetry within the localized portion of the bandwidth (816) and including information for providing at least partial cell identification information (812). The synchronization channel signal enables an initial acquisition and cell search method with low computational load which provides OFDMA symbol timing detection and frequency error detection (1112) and frame boundary detection and cell specific information detection (1114) in an OFDMA system supporting multiple system bandwidths, both synchronized and un-synchronized systems, a large cell index and an OFDMA symbol structure with both short and long cyclic prefix length.

    Abstract translation: 提供了一种用于发送包括在OFDMA信号（818）的带宽的局部部分内发送的同步信道信号的正交频域多址（OFDMA）信号的方法和装置，所述同步信道信号具有在 带宽的局部部分（816）并且包括用于提供至少部分小区识别信息的信息（812）。 同步信道信号支持在支持多个系统带宽的OFDMA系统中提供OFDMA符号定时检测和频率误差检测（1112）和帧边界检测和小区特定信息检测（1114）的具有低计算负荷的初始采集和小区搜索方法， 同步和非同步的系统，大的信元索引和具有短和长循环前缀长度的OFDMA符号结构。

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