利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

104 条记录 (耗时 0.022 秒)

    Method for improving multipath searcher speed
    11.
    发明授权
    Method for improving multipath searcher speed 失效
    提高多径搜索器速度的方法

    公开(公告)号：US06834075B2

    公开(公告)日：2004-12-21

    申请号：US09760413

    申请日：2001-01-12

    申请人： Michael Mao Wang

    发明人： Michael Mao Wang

    IPC分类号： H04B1707

    CPC分类号： H04B1/7113 ,  H04B1/70753 ,  H04B1/70754

    摘要： A multipath signal searcher (204) used in CDMA wireless communication systems is provided. Search paths (214) of the multipath signal searcher are grouped together and assigned by an offset assignment/timing block (210) to search a time offset within a search window. The search paths may be operated In serial or parallel operation mode. In either mode, the search paths are individually assigned to search over one of a group of time offsets that are distributed across the search window evenly. In parallel mode, the search paths are not only grouped to search only a given set of time offsets within the search window, but different groups of search paths are offset to commence searching at different times then other groups of search paths to more quickly update a finger manager and more quickly retrieve the mobile communication signal.

    摘要翻译： 提供了一种在CDMA无线通信系统中使用的多径信号搜索器（204）。 多径信号搜索器的搜索路径（214）被分组在一起并由偏移分配/定时块（210）分配，以搜索搜索窗口内的时间偏移量。 搜索路径可以在串行或并行操作模式下操作。 在任一模式下，分别分配搜索路径以搜索跨搜索窗口均匀分布的一组时间偏移中的一个。 在并行模式中，搜索路径不仅被分组以仅在搜索窗口内搜索给定的一组时间偏移量，而且不同的搜索路径组被偏移以在不同的时间开始搜索，而其他搜索路径组更快地更新 手指管理器并且更快地检索移动通信信号。

    Method of determining an encoding rate in a communication system
    13.
    发明授权
    Method of determining an encoding rate in a communication system 有权
    确定通信系统中编码速率的方法

    公开(公告)号：US6137845A

    公开(公告)日：2000-10-24

    申请号：US293545

    申请日：1999-04-16

    申请人： Michael Mao Wang

    发明人： Michael Mao Wang

    IPC分类号： H04J13/00 ,  H04L1/00 ,  H04L1/20 ,  H03D1/00

    CPC分类号： H04L1/0046

    摘要： A method of determining an encoding rate associated with a received data frame in a communication system includes decoding (101) the received data frame at a first and second encoding rates to determine a first and second total metric, calculating (102) a discriminant function based on the first and second total metric, comparing (103) the discriminant function to a range of predetermined values having an upper predetermined range limit and a lower predetermined range limit, and selecting (104) one of the first and second rates as a determined encoding rate based on comparing (103) depending on whether the discriminant function is above the upper predetermined range limit or below the lower predetermined range limit.

    摘要翻译： 一种在通信系统中确定与接收到的数据帧相关联的编码率的方法包括以第一和第二编码率对接收到的数据帧进行解码（101），以确定第一和第二总量度，计算（102）基于判别函数 在第一和第二总计量中，将判别函数与具有上限预定范围限制和较低预定范围限制的预定值的范围进行比较（103），并且选择（104）第一和第二速率中的一个作为确定的编码 基于判别函数是否高于上限范围限制或低于下限预定范围限制，比较（103）的速率。

    Apparatus and methods for timing recovery in a wireless transceiver
    14.
    发明授权
    Apparatus and methods for timing recovery in a wireless transceiver 有权
    无线收发器中定时恢复的装置和方法

    公开(公告)号：US08948329B2

    公开(公告)日：2015-02-03

    申请号：US11303589

    申请日：2005-12-15

    申请人： Michael Mao Wang ,  Bojan Vrcelj ,  Fuyun Ling ,  Rajiv Vijayan

    发明人： Michael Mao Wang ,  Bojan Vrcelj ,  Fuyun Ling ,  Rajiv Vijayan

    IPC分类号： H04L7/00 ,  H04L27/00 ,  H04L27/26

    CPC分类号： H04L27/2656 ,  H04L27/261 ,  H04L27/2675

    摘要： Apparatus and methods for use in a wireless communication system are disclosed for recovery of timing tracking in a device, such as a wireless transceiver, after decoding errors occur due to incorrect timing tracking. In particular, the disclosed methods and apparatus recover timing tracking by monitoring a decoded signal in the transceiver for decoding errors occurring during a first frame, determining whether a number of decoding errors is greater than a predetermined amount, reacquiring a first pilot channel at a start of a subsequently received second frame when the number of decoding errors is determined to be greater than the predetermined amount, and resetting timing tracking of the transceiver based on the reacquired first pilot channel.

    摘要翻译： 在无线通信系统中使用的装置和方法被公开用于在诸如无线收发器的设备中恢复定时跟踪，在由于不正确的定时跟踪而导致解码错误之后。 具体地，所公开的方法和装置通过监视收发器中的解码信号来恢复定时跟踪，以解码在第一帧期间发生的错误，确定解码错误的数量是否大于预定量，在开始时重新获取第一导频信道 当确定解码错误的数量大于预定量时，随后接收到的第二帧，并且基于重新获取的第一导频信道来重置收发信机的定时跟踪。

    Estimation of repeater loop delay for repeater gain control
    16.
    发明授权
    Estimation of repeater loop delay for repeater gain control 失效
    用于中继器增益控制的中继器回路延迟的估计

    公开(公告)号：US08774708B2

    公开(公告)日：2014-07-08

    申请号：US13372385

    申请日：2012-02-13

    申请人： Michael Mao Wang ,  Gwendolyn Denise Barriac ,  Dhananjay Ashok Gore

    发明人： Michael Mao Wang ,  Gwendolyn Denise Barriac ,  Dhananjay Ashok Gore

    IPC分类号： H04B7/14

    CPC分类号： H04B7/15578 ,  H04B7/15535

    摘要： Methods and apparatus for estimating a loop delay value (Ndelay) in an interference cancellation repeater are presented. For example, a method may include setting a repeater gain to an initial gain value, setting a delay parameter to an initial time value, and measuring a loop gain associated with the delay parameter and the repeater gain by detecting a feedback signal with an echo canceller disabled. The method may further include determining whether the measured loop gain is larger than a previously measured loop gain, and if so, designating the delay parameter as the loop delay value (Ndelay); and decrementing the delay parameter when the measured loop gain is not larger than the previously measured loop gain, and when the delay parameter is not at a final time value. The method may iterate until the delay parameter is less than or equal to the final time value.

    摘要翻译： 提出了一种用于估计干扰消除中继器中的环路延迟值（Ndelay）的方法和装置。 例如，一种方法可以包括将中继器增益设置为初始增益值，将延迟参数设置为初始时间值，以及通过用回波消除器检测反馈信号来测量与延迟参数和中继器增益相关联的环路增益 残疾人士 该方法还可以包括确定测量的环路增益是否大于先前测量的环路增益，如果是，则将延迟参数指定为环路延迟值（Ndelay）; 并且当测量的环路增益不大于先前测量的环路增益时，以及当延迟参数不在最终时间值时，递减延迟参数。 该方法可以迭代，直到延迟参数小于或等于最终时间值。

    Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or SC-FDM
    19.
    发明授权
    Method and apparatus for efficient selection and acquisition of systems utilizing OFDM or SC-FDM 有权
    用于有效选择和采集OFDM或SC-FDM的系统的方法和装置

    公开(公告)号：US08331286B2

    公开(公告)日：2012-12-11

    申请号：US12181116

    申请日：2008-07-28

    申请人： Rotem Cooper ,  Aamod Khandekar ,  Michael Mao Wang ,  Karthik Anantharaman

    发明人： Rotem Cooper ,  Aamod Khandekar ,  Michael Mao Wang ,  Karthik Anantharaman

    IPC分类号： H04W72/02

    CPC分类号： H04L27/0012 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/0008 ,  H04L27/2613 ,  H04L27/2647

    摘要： Techniques for performing system selection and acquisition are described. In one design, a terminal may obtain at least one system record for at least one system utilizing orthogonal frequency division multiplexing (OFDM) or single-carrier frequency division multiplexing (SC-FDM). Each system record may include system identification information for an associated system and an index for an associated acquisition record. The terminal may also obtain at least one acquisition record for the at least one system. Each acquisition record may include at least one value for at least one configurable system parameter, e.g., FFT size, cyclic prefix length, number of guard subcarriers, etc. The terminal may perform acquisition for the at least one system in accordance with the at least one system record and the at least one acquisition record. The system and acquisition records may be stored in a Preferred Roaming List (PRL) or a Most Recently Used (MRU) list.

    摘要翻译： 描述了执行系统选择和采集的技术。 在一种设计中，终端可以为利用正交频分复用（OFDM）或单载波频分复用（SC-FDM）的至少一个系统获得至少一个系统记录。 每个系统记录可以包括关联系统的系统识别信息和关联采集记录的索引。 终端还可以获得至少一个系统的至少一个采集记录。 每个采集记录可以包括用于至少一个可配置系统参数的至少一个值，例如FFT大小，循环前缀长度，保护子载波数量等。终端可以至少根据至少一个系统执行对至少一个系统的采集 一个系统记录和至少一个采集记录。 系统和采集记录可以存储在首选漫游列表（PRL）或最近使用（MRU）列表中。

    TIMING AND FREQUENCY ACQUISITION FOR WIRELESS NETWORKS
    20.
    发明申请
    TIMING AND FREQUENCY ACQUISITION FOR WIRELESS NETWORKS 审中-公开
    无线网络的时序和频率采集

    公开(公告)号：US20120263167A1

    公开(公告)日：2012-10-18

    申请号：US13531489

    申请日：2012-06-22

    申请人： Michael Mao Wang

    发明人： Michael Mao Wang

    IPC分类号： H04W56/00 ,  H04L27/06 ,  H04J3/06

    CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L27/2657 ,  H04L27/2675 ,  H04W56/00

    摘要： Systems and methods are provided for processing Time Domain Multiplexing Pilot symbols by employing complex accumulators to determine peak values which indicate the start of timing and frequency information. In an embodiment, a method is provided for timing acquisition in a wireless network. The method includes acquiring samples from an Orthogonal Frequency Division Multiplexing (OFDM) data packet over a predetermined period of time, where the samples include one or more TDM pilot symbols. The samples are then processed to determine a maximum value that indicates the TDM pilot symbol has been detected.

    摘要翻译： 提供了系统和方法，用于通过采用复合累加器来确定指示定时和频率信息开始的峰值来处理时域多路复用导频符号。 在一个实施例中，提供了一种用于无线网络中的定时获取的方法。 该方法包括在预定时间段内从正交频分复用（OFDM）数据分组获取样本，其中样本包括一个或多个TDM导频符号。 然后处理样本以确定指示已经检测到TDM导频符号的最大值。