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    REDUCING PHASE ERRORS ON A COMMUNICATION DEVICE
    33.
    发明申请
    REDUCING PHASE ERRORS ON A COMMUNICATION DEVICE 有权
    减少通信设备的相位误差

    公开(公告)号：US20110188559A1

    公开(公告)日：2011-08-04

    申请号：US13014578

    申请日：2011-01-26

    申请人： Didier Johannes Richard Van Nee

    发明人： Didier Johannes Richard Van Nee

    IPC分类号： H04B17/00

    CPC分类号： H04L5/0023 ,  H04L25/0206 ,  H04L25/0212 ,  H04L25/0224 ,  H04L25/0242 ,  H04L27/2607 ,  H04L2027/0026

    摘要： A communication device that is configured for reducing phase errors is described. The communication device includes a processor and instructions stored in memory. The communication device calculates a sum channel in the frequency domain, estimates one or more impulse responses and isolates an impulse response for one or more wireless communication devices. The communication device also calculates a phase error for each wireless communication device and reduces the phase error for each wireless communication device.

    摘要翻译： 描述了被配置为减少相位误差的通信设备。 通信设备包括处理器和存储在存储器中的指令。 通信设备计算频域中的和信道，估计一个或多个脉冲响应并隔离一个或多个无线通信设备的脉冲响应。 通信设备还计算每个无线通信设备的相位误差，并减少每个无线通信设备的相位误差。

    Nested preamble for multi input multi output orthogonal frequency division multiplexing
    34.
    发明授权
    Nested preamble for multi input multi output orthogonal frequency division multiplexing 有权
    多输入多输出正交频分复用的嵌套前导码

    公开(公告)号：US07856068B1

    公开(公告)日：2010-12-21

    申请号：US11475606

    申请日：2006-06-26

    申请人： Chien-Cheng Tung ,  Thomas Edward Pare, Jr.

    发明人： Chien-Cheng Tung ,  Thomas Edward Pare, Jr.

    IPC分类号： H04B7/02

    CPC分类号： H04L25/0242 ,  H04B7/0617 ,  H04L25/0232 ,  H04L27/2613 ,  H04L27/2657 ,  H04L2027/0026 ,  H04L2027/0055 ,  H04L2027/0065

    摘要： A multi input multi output (MIMO) system for transmitting and receiving packets having a nested preamble format included in said packets and having poly-carrier long training sequence (LTS) and signal field (SIG) for training receivers, in accordance with an embodiment of the present invention. Said packets being transmitted using the modulation scheme of a wireless local area network (WLAN) standard, said nested preamble format for allowing said receivers to use one or more receiver antennas to interpret said LTS and said SIG to increase the efficiency of said MIMO system.

    摘要翻译： 一种多输入多输出（MIMO）系统，用于发送和接收包括在所述分组中的具有嵌套前导码格式的分组，并且具有用于训练接收机的多载波长训练序列（LTS）和信号字段（SIG） 本发明。 所述分组使用无线局域网（WLAN）标准的调制方案发送，所述嵌套前导码格式允许所述接收机使用一个或多个接收机天线来解释所述LTS和所述SIG，以提高所述MIMO系统的效率。

    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, CONTROL METHOD, AND CONTROL PROGRAM
    35.
    发明申请
    COMMUNICATION DEVICE, COMMUNICATION SYSTEM, CONTROL METHOD, AND CONTROL PROGRAM 审中-公开
    通信设备，通信系统，控制方法和控制程序

    公开(公告)号：US20100279643A1

    公开(公告)日：2010-11-04

    申请号：US12738868

    申请日：2009-01-20

    申请人： Yasushi Maruta

    发明人： Yasushi Maruta

    IPC分类号： H04B1/26

    CPC分类号： H04L27/0014 ,  H03J7/04 ,  H04L25/0204 ,  H04L2027/0026

    摘要： To provide a communication device in which an operation of demodulating a reception signal can be performed with good accuracy.The communication device controls a parameter used when the reception signal is demodulated by a demodulation unit (104) according to an estimated frequency offset that is estimated from the reception signal and information obtained from the estimated frequency offset.

    摘要翻译： 提供可以以高精度执行解调接收信号的操作的通信装置。 通信装置根据从接收信号估计的估计频率偏移和从估计的频率偏移获得的信息，控制当由解调单元（104）解调接收信号时使用的参数。

    Signal processing unit and wireless communication device
    36.
    发明申请
    Signal processing unit and wireless communication device 有权
    信号处理单元和无线通信设备

    公开(公告)号：US20090180525A1

    公开(公告)日：2009-07-16

    申请号：US12382157

    申请日：2009-03-10

    申请人： Kaoru Kobayashi ,  Shigeru Takegishi

    发明人： Kaoru Kobayashi ,  Shigeru Takegishi

    IPC分类号： H04B1/707

    CPC分类号： H04B1/70752 ,  H04L27/0014 ,  H04L2027/0026 ,  H04L2027/0051 ,  H04L2027/0095

    摘要： A signal processing unit and a wireless communication device are provided for making it possible to improve detecting sensitivity in correlation peak detecting processing. The signal processing unit and the wireless communication device are comprised of a carrier data generating unit; a carrier demodulation unit; a matched filter unit that carries out despread processing and full addition processing as partial correlation processing for carrier demodulated data, and outputs correlation peak detected data; a correlation peak detecting unit that detects a correlation peak from the correlation detected data and outputs correlation peak position information; a coarse frequency deviation detecting unit that detects a frequency component in accordance with a carrier frequency deviation amount with respect to the carrier demodulated data and outputs a frequency deviation amount to the carrier data generating unit; a fine frequency deviation detecting unit that outputs a fine frequency deviation amount to reduce the frequency deviation amount from the correlation detected data and the correlation peak position information to the carrier data generating unit; and a control unit that inputs the correlation peak position information and adjusts a processing clock signal.

    摘要翻译： 提供信号处理单元和无线通信设备，用于提高相关峰值检测处理中的检测灵敏度。 信号处理单元和无线通信设备包括载波数据生成单元; 载波解调单元; 匹配滤波器单元，其执行解扩处理和全加法处理作为载波解调数据的部分相关处理，并输出相关峰检测数据; 相关峰值检测单元，根据相关检测数据检测相关峰值，并输出相关峰值位置信息; 粗频率偏差检测单元，根据与载波解调数据相关的载波频率偏差量检测频率分量，并向载波数据生成单元输出频率偏差量; 精细频率偏差检测单元，其将相关检测数据和相关峰值位置信息的频率偏差量的精细频率偏差量输出到载波数据生成单元; 以及控制单元，其输入相关峰值位置信息并调整处理时钟信号。

    Methods and Systems for Communicating Using Transmitted Symbols Associated with Multiple Time Durations
    37.
    发明申请
    Methods and Systems for Communicating Using Transmitted Symbols Associated with Multiple Time Durations 有权
    使用与多次持续时间相关联的传输符号进行通信的方法和系统

    公开(公告)号：US20080298531A1

    公开(公告)日：2008-12-04

    申请号：US12189405

    申请日：2008-08-11

    申请人： Markos G. Troulis ,  Arndt Joseph Mueller ,  Karl E. Fitzke

    发明人： Markos G. Troulis ,  Arndt Joseph Mueller ,  Karl E. Fitzke

    IPC分类号： H04L7/00

    CPC分类号： H04L27/2657 ,  H04L27/2607 ,  H04L27/2676 ,  H04L69/18 ,  H04L2027/0026 ,  H04L2027/0067

    摘要： In at least some embodiments, a system may comprise one or more devices configurable to communicate according to a first protocol that permits interpretation of transmitted symbols associated with a first time duration. The system may further comprise one or more devices configurable to communicate according to a second protocol that permits interpretation of transmitted symbols associated with multiple time durations. The one or more devices configurable to communicate according to the second protocol are operable to communicate using transmitted symbols associated with the first time duration and to communicate using transmitted symbols associated with a time duration that is not supported by the one or more devices configured to communicate according to the first protocol.

    摘要翻译： 在至少一些实施例中，系统可以包括可配置为根据允许对与第一持续时间相关联的发射符号进行解释的第一协议进行通信的一个或多个设备。 该系统还可以包括一个或多个可配置为根据允许对与多个时间持续时间相关联的传输符号的解释的第二协议进行通信的设备。 可配置为根据第二协议通信的一个或多个设备可操作以使用与第一持续时间相关联的发射符号进行通信，并使用与被配置为通信的一个或多个设备不支持的持续时间相关联的发射符号进行通信 根据第一个协议。

    Method for performing a frequency correction of a wireless device
    38.
    发明申请
    Method for performing a frequency correction of a wireless device 有权
    执行无线装置的频率校正的方法

    公开(公告)号：US20080039026A1

    公开(公告)日：2008-02-14

    申请号：US11891376

    申请日：2007-08-10

    申请人： Kenneth Johnson ,  John Brown ,  Edward Vertatschitsch

    发明人： Kenneth Johnson ,  John Brown ,  Edward Vertatschitsch

    IPC分类号： H04B1/40

    CPC分类号： H03J7/04 ,  H04L27/0014 ,  H04L2027/0026 ,  H04L2027/0032

    摘要： A method of performing a frequency correction of a radio module. Multiple samples of frequency data during a quiescent portion of the base station transmission is taken to estimate the amount of frequency correction needed. An embodiment applies the frequency data to a median filter to eliminate invalid data. Next, a new reference frequency is applied to a radio transceiver in the radio module to provide the frequency correction. If the frequency was corrected by greater than a pre-determined amount, the process performs a large shift frequency correction, including verifying that the first frequency correction was satisfactory and verifying that the radio transceiver is able to receive data after the frequency correction has been performed. If the frequency was corrected by smaller than a pre-determined amount, the process performs a small shift frequency correction, including updating a total of all frequency corrections made since a stored reference frequency was updated.

    摘要翻译： 执行无线电模块的频率校正的方法。 采用在基站传输的静止部分期间的频率数据的多个样本来估计所需的频率校正量。 一个实施例将频率数据应用于中值滤波器以消除无效数据。 接下来，将新的参考频率应用于无线电模块中的无线电收发器以提供频率校正。 如果频率被校正大于预定量，则该处理执行大的移位频率校正，包括验证第一频率校正是令人满意的并且验证无线电收发机能够在执行频率校正之后接收数据 。 如果频率被校正小于预定量，则该处理执行小的移位频率校正，包括更新从存储的参考频率更新以来所做的所有频率校正的总和。

    Sync bursts for frequency offset compensation
    39.
    发明授权
    Sync bursts for frequency offset compensation 有权
    用于频偏补偿的同步脉冲串

    公开(公告)号：US07277457B2

    公开(公告)日：2007-10-02

    申请号：US10678416

    申请日：2003-10-03

    申请人： Paul E. Gorday ,  Edgar Herbert Callaway, Jr. ,  Frederick L. Martin ,  David B. Taubenheim

    发明人： Paul E. Gorday ,  Edgar Herbert Callaway, Jr. ,  Frederick L. Martin ,  David B. Taubenheim

    IPC分类号： H04J3/06

    CPC分类号： H04L27/0014 ,  H04L7/04 ,  H04L2027/0026 ,  H04L2027/0083 ,  H04W56/0035 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

    摘要： A method (500) and system for compensation of frequency offset between a first transceiver (102) and a second transceiver (104) in wireless communication are disclosed. The compensation of the frequency offset between two or more transceivers (102, 104) is achieved using frequency synchronization bursts. These bursts contain information about the frequency offset. The frequency synchronization bursts are transmitted by the first transceiver at a range of frequencies above and below its carrier frequency (502). A second transceiver that receives at least one of these bursts (504) determines the frequency offset (504), and adjusts its frequency to match the frequency of the first transceiver (508). Thereafter, the second transceiver may enter a low power sleep mode (510) in order to reduce its power consumption. The second transceiver returns to active mode (512) just before the start of the transmission of the data packets (514).

    摘要翻译： 公开了一种用于在无线通信中补偿第一收发器（102）和第二收发器（104）之间的频率偏移的方法（500）和系统。 使用频率同步脉冲串实现两个或多个收发器（102,104）之间的频率偏移的补偿。 这些突发包含有关频率偏移的信息。 频率同步突发由第一收发器在其载波频率（502）之上和之下的频率范围内传输。 接收这些突发（504）中的至少一个的第二收发器确定频率偏移（504），并且调整其频率以匹配第一收发器（508）的频率。 此后，第二收发器可以进入低功率休眠模式（510），以便降低其功耗。 第二收发器在数据分组（514）的发送开始之前返回到活动模式（512）。