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104 条记录 (耗时 0.027 秒)

    Timing and frequency acquisition for OFDM systems
    101.
    发明申请
    Timing and frequency acquisition for OFDM systems 失效
    OFDM系统的定时和频率采集

    公开(公告)号：US20070286065A1

    公开(公告)日：2007-12-13

    申请号：US11449945

    申请日：2006-06-09

    申请人： Michael Mao Wang

    发明人： Michael Mao Wang

    IPC分类号： H04J11/00

    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的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。

    Blind transport format detection for communication
    102.
    发明授权
    Blind transport format detection for communication 失效
    盲传输格式检测用于通信

    公开(公告)号：US06813736B2

    公开(公告)日：2004-11-02

    申请号：US09973339

    申请日：2001-10-09

    申请人： Michael Mao Wang ,  Tyler A. Brown

    发明人： Michael Mao Wang ,  Tyler A. Brown

    IPC分类号： G01R3128

    CPC分类号： H04L1/0038 ,  H04L1/0013 ,  H04L1/0055 ,  H04L1/0061

    摘要： A receiver (300) is provided that efficiently determines what transport format combination is currently being utilized by a transmitter (200) multiplexing (201) several transport channels onto a single over-the-air channel (209). The receiver (300) estimates the transmitted sequence and, not knowing the format combination being utilized, makes estimates of the information bits for each of the possible transport format combinations. CRC metrics are determined (one for each transport or data channel) for each possible transport format combination, and these CRC metrics are combined into a single transport format combination metric for the particular transport format combination being tested.

    摘要翻译： 提供了一种接收机（300），其有效地确定发射机（200）当前正在利用什么传输格式组合（200）将多个传输信道复用到单个空中信道（209）上。 接收机（300）估计所发送的序列，并且不知道所利用的格式组合对每个可能的传输格式组合的信息比特进行估计。 对于每个可能的传输格式组合，确定CRC度量（对于每个传输或数据信道一个），并且将这些CRC度量组合成被测试的特定传输格式组合的单个传输格式组合度量。

    Apparatus and method for estimating channel phase using channel symbol reliability data
    103.
    发明授权
    Apparatus and method for estimating channel phase using channel symbol reliability data 有权
    使用信道符号可靠性数据估计信道相位的装置和方法

    公开(公告)号：US06498805B1

    公开(公告)日：2002-12-24

    申请号：US09433814

    申请日：1999-11-03

    申请人： Tyler Brown ,  Michael Mao Wang ,  Fuyun Ling

    发明人： Tyler Brown ,  Michael Mao Wang ,  Fuyun Ling

    IPC分类号： H04B169

    CPC分类号： H04L1/0071 ,  H04B2201/70701 ,  H04L1/0055 ,  H04L25/067 ,  H04L2027/003 ,  H04L2027/0046 ,  H04L2027/0087

    摘要： An apparatus and method provides channel phase compensation for a digital radio frequency RF channel, by analyzing a demodulated signal (24) communicated over the digital RF channel and generates data representing an estimate of a channel phase (28), based on channel symbol reliability data (242) generated for at least one channel symbol received over the RF channel. The apparatus and method iteratively generates channel symbol reliability data (242) for a same symbol until a frame containing the symbol is determined to either pass a frame error threshold or until a predetermined number of iterations of channel phase estimates for a symbol is detected.

    摘要翻译： 一种装置和方法，通过分析通过数字RF信道传送的解调信号（24）并基于信道符号可靠性数据产生表示信道相位估计（28）的数据，为数字射频RF信道提供信道相位补偿 （242），用于通过RF信道接收的至少一个信道符号生成。 该装置和方法迭代地产生用于相同符号的信道符号可靠性数据（242），直到包含符号的帧被确定为通过帧错误阈值或者直到检测到符号的信道相位估计的预定次数为止。