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1. 发明申请

US20110293040A1 METHOD AND APPARATUS FOR SIGNAL ACQUISITION IN OFDM RECEIVERS 有权
标题翻译： OFDM接收机信号采集方法与装置
公开(公告)号：US20110293040A1
公开(公告)日：2011-12-01
申请号：US12672663
申请日：2008-08-06
申请人： Louis Dupont , Sébastien Joseph Armand Roy
发明人： Louis Dupont , Sébastien Joseph Armand Roy
IPC分类号： H04L27/00
CPC分类号： H03H21/0018 , H04B7/0848 , H04L25/0204 , H04L25/0224 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04L27/2675 , H04L27/2684
摘要： A method and apparatus for signal acquisition in an OFDM receiver relies on a preamble training sequence to synchronize the receiver in time (e.g. determining the start of a frame) and in frequency (carrier frequency offset compensation). The preamble training sequence has a periodic structure and the method and apparatus perform a cross-correlation technique using a matched filter to achieve time synchronization and/or frequency synchronization and/or channel estimation, the latter being especially useful in multi-antenna receivers for diversity combining purposes. Many advantages derive from performing at least two and preferably all three operations jointly, in terms of latency, hardware complexity, and length of training sequence required to achieve satisfactory convergence on all counts. The periodicity of the training sequence is exploited to reduce considerably the main filter complexity and optionally dynamically adjust carrier offset compensation throughout the filtering process, thus improving the quality of all final estimates (carrier frequency offset, time synchronization, and channel).
摘要翻译：在OFDM接收机中用于信号采集的方法和装置依赖于前导码训练序列来在时间上同步接收机（例如，确定帧的开始）和频率（载波频率偏移补偿）。前导码训练序列具有周期性结构，并且该方法和装置使用匹配滤波器来执行互相关技术以实现时间同步和/或频率同步和/或信道估计，后者在多天线接收机中特别有用，用于分集结合目的根据在所有计数上实现令人满意的收敛所需的延迟，硬件复杂度和训练序列的长度，共同执行至少两个并且优选地全部三个操作的优点。利用训练序列的周期性大大降低了主滤波器的复杂度，并且可选地在整个滤波过程中动态调整载波偏移补偿，从而提高了所有最终估计（载波频率偏移，时间同步和信道）的质量。

2. 发明授权

US08605843B2 Method and apparatus for signal acquisition in OFDM receivers 有权
标题翻译： OFDM接收机信号采集方法及装置
公开(公告)号：US08605843B2
公开(公告)日：2013-12-10
申请号：US12672663
申请日：2008-08-06
申请人： Louis Dupont , Sébastien Joseph Armand Roy
发明人： Louis Dupont , Sébastien Joseph Armand Roy
IPC分类号： H04B7/10
CPC分类号： H03H21/0018 , H04B7/0848 , H04L25/0204 , H04L25/0224 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04L27/2675 , H04L27/2684
摘要： A method and apparatus for signal acquisition in an OFDM receiver relies on a preamble training sequence to synchronize the receiver in time (e.g. determining the start of a frame) and in frequency (carrier frequency offset compensation). The preamble training sequence has a periodic structure and the method and apparatus perform a cross-correlation technique using a matched filter to achieve time synchronization and/or frequency synchronization and/or channel estimation, the latter being especially useful in multi-antenna receivers for diversity combining purposes. Many advantages derive from performing at least two and preferably all three operations jointly, in terms of latency, hardware complexity, and length of training sequence required to achieve satisfactory convergence on all counts. The periodicity of the training sequence is exploited to reduce considerably the main filter complexity and optionally dynamically adjust carrier offset compensation throughout the filtering process.
摘要翻译：在OFDM接收机中用于信号采集的方法和装置依赖于前导码训练序列来在时间上同步接收机（例如，确定帧的开始）和频率（载波频率偏移补偿）。前导码训练序列具有周期性结构，并且该方法和装置使用匹配滤波器来执行互相关技术以实现时间同步和/或频率同步和/或信道估计，后者在多天线接收机中特别有用，用于分集结合目的根据在所有计数上实现令人满意的收敛所需的延迟，硬件复杂度和训练序列的长度，共同执行至少两个并且优选地全部三个操作的优点。利用训练序列的周期性大大降低了主滤波器的复杂度，并且可选地在整个滤波过程中动态地调整载波偏移补偿。

3. 发明授权

US07904039B2 Multi-user adaptive array receiver and method 失效
标题翻译：多用户自适应阵列接收机和方法
公开(公告)号：US07904039B2
公开(公告)日：2011-03-08
申请号：US10587701
申请日：2005-01-31
申请人： Sébastien Joseph Armand Roy
发明人： Sébastien Joseph Armand Roy
IPC分类号： H04B7/08 , H04B1/00
CPC分类号： H04B7/0848 , H04B7/0851 , H04B7/0854 , H04B7/0871 , H04L1/0618
摘要： An array receiver which reduces complexity and cost by exploiting multiuser information in signals received from a plurality of transmitting users preprocesses (40) samples of antenna signals (x1, x2 . . . , xN) from the antenna elements (22/1, . . . , 22/N) to form basis signals (yO, . . . , yM) together having fewer space-time dimensions than the space-time dimensions of the combined antenna signals. The receiver processes and combines the basis signals to produce sets of estimated received signals (z0, . . . , zM), each for a corresponding one of the users. Each of the basis signals comprises a different combination of the antenna signals. The receiver combines the basis signals to provide a user-specific output signal, and periodically updates parameters of the filters (40/0, . . . , 40/M) used for deriving each particular basis signal such that each user-specific output signal will exhibit a desired optimized concentration of energy of that user's received signal as received by the array antenna.
摘要翻译：阵列接收机，其通过利用从多个发射用户接收的信号中的多用户信息来降低复杂度和成本，所述信号从天线元件（22/1，...）预处理（40）天线信号（x1，x2，...，xN）的采样。形成基本信号（y0，...，yM），它们的空间 - 时间尺寸小于组合天线信号的时空尺寸。接收机处理并组合基础信号以产生估计接收信号（z0，...，zM）的集合，每一个用于对应的一个用户。每个基本信号包括天线信号的不同组合。接收器组合基础信号以提供用户特定的输出信号，并周期性地更新用于导出每个特定基准信号的滤波器（40/0，...，40 / M）的参数，使得每个用户特定的输出信号将呈现由阵列天线接收的该用户接收信号的期望的最佳能量浓度。

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