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1. 发明授权

US07274322B2 Systems and methods for automatic gain control for multichannel receivers 有权
标题翻译：用于多通道接收机自动增益控制的系统和方法
公开(公告)号：US07274322B2
公开(公告)日：2007-09-25
申请号：US11161163
申请日：2005-07-25
申请人： Jeffrey A. Hester , Radde Majeed , Julia R. Baryl
发明人： Jeffrey A. Hester , Radde Majeed , Julia R. Baryl
IPC分类号： G01S7/34
CPC分类号： H03G3/3078 , G01S7/34 , G01S7/4021 , H03G3/001 , H03G2201/706 , Y10S73/90
摘要： Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals received from a radar receiver. A digital signal processor determines coarse gain correction based on digitized noise data for a plurality of channels, determines fine gain correction based on the residual error after the coarse gain, and determines frequency vs. gain curve correction based on the digitized noise data for a plurality of channels and a mathematical model of frequency gain across a noise spectrum for the radar system. The result of the processor is a gain control signal that is sent to the attenuator to perform hardware gain control and a channel specific scale factor for software gain control. In one embodiment, the processor generates the gain control signal during an inactive scan mode of the radar system.
摘要翻译：在雷达系统中执行自动增益控制的装置和方法。该系统的一个实施例包括衰减器，其控制从雷达接收器接收的信号的增益。数字信号处理器基于多个通道的数字化噪声数据来确定粗增益校正，基于粗增益之后的残差来确定精细增益校正，并且基于多个数字化噪声数据确定频率对增益曲线校正的通道和用于雷达系统的噪声频谱的频率增益的数学模型。处理器的结果是发送到衰减器以执行硬件增益控制和用于软件增益控制的通道特定比例因子的增益控制信号。在一个实施例中，处理器在雷达系统的非活动扫描模式期间产生增益控制信号。

2. 发明授权

US06757339B1 Minimum mean-squared error block-decision feedback sequence estimation in digital communication systems 有权
标题翻译：数字通信系统中的最小均方误差块判决反馈序列估计
公开(公告)号：US06757339B1
公开(公告)日：2004-06-29
申请号：US09624207
申请日：2000-07-24
申请人： Tharmalingam Ratnarajah , Radde Majeed , Nidham Ben Rached
发明人： Tharmalingam Ratnarajah , Radde Majeed , Nidham Ben Rached
IPC分类号： H04B330
CPC分类号： H04L25/03267 , H04L25/03292 , H04L2025/03401
摘要： A method of estimating the sequence of transmitted symbols in a digital communication system is provided. By assuming that the transmitted symbols have a zero mean and a covariance matrix given by an identity matrix, as is the case in an EDGE communication system, the solution to the minimization of the expectation value of ∥{circumflex over (s)}−s∥2 always allows a lower triangular matrix to be found through Cholesky decomposition. The lower triangular matrix allows an efficient block decision-feedback sequence estimation to be carried out. The method is no more complex than the zero-forcing block decision-feedback sequence estimation technique, yet a solution always exists and performance is improved over the zero-forcing method.
摘要翻译：提供了一种在数字通信系统中估计发送符号序列的方法。通过假设所发送的符号具有由单位矩阵给出的零均值和协方差矩阵，如在EDGE通信系统中的情况一样，使得对于∥{circumflex over（s）}的期望值最小化的解决方案 ∥<2>总是允许通过Cholesky分解找到一个下三角矩阵。下三角矩阵允许执行有效的块判决反馈序列估计。该方法不比零强制块决策反馈序列估计技术复杂得多，但仍然存在一种解决方案，并且通过零强制方法提高性能。

3. 发明授权

US08791856B2 Systems and methods for automatically determining a noise threshold 有权
标题翻译：自动确定噪声阈值的系统和方法
公开(公告)号：US08791856B2
公开(公告)日：2014-07-29
申请号：US13080833
申请日：2011-04-06
申请人： David C. Vacanti , Radde Majeed , Anthony H. Luk
发明人： David C. Vacanti , Radde Majeed , Anthony H. Luk
IPC分类号： G01S13/00
CPC分类号： G01S13/882 , G01S7/352 , G01S7/354 , G01S7/414 , G01S13/34 , G01S2007/356
摘要： Systems and methods for automatically determining a noise threshold are provided. In one implementation, a system comprises: an antenna configured to gather data about a surrounding environment; a processing unit configured to remove samples representing target data from the gathered data; to estimate the noise floor from the gathered data with the removed target data; and to determine a noise threshold from the estimated noise floor; and a memory device configured to store the estimated noise floor.
摘要翻译：提供了用于自动确定噪声阈值的系统和方法。在一个实现中，系统包括：被配置为收集关于周围环境的数据的天线; 处理单元，被配置为从所收集的数据中去除表示目标数据的样本; 用已删除的目标数据估计收集的数据中的噪声基数; 并从估计的本底噪声阈值确定; 以及被配置为存储所估计的噪声基底的存储器装置。

4. 发明申请

US20120256781A1 SYSTEMS AND METHODS FOR AUTOMATICALLY DETERMINING A NOISE THRESHOLD 有权
标题翻译：用于自动确定噪声阈值的系统和方法
公开(公告)号：US20120256781A1
公开(公告)日：2012-10-11
申请号：US13080833
申请日：2011-04-06
申请人： David C. Vacanti , Radde Majeed , Anthony H. Luk
发明人： David C. Vacanti , Radde Majeed , Anthony H. Luk
IPC分类号： G01S13/08 , G01S13/00
CPC分类号： G01S13/882 , G01S7/352 , G01S7/354 , G01S7/414 , G01S13/34 , G01S2007/356
摘要： Systems and methods for automatically determining a noise threshold are provided. In one implementation, a system comprises: an antenna configured to gather data about a surrounding environment; a processing unit configured to remove samples representing target data from the gathered data; to estimate the noise floor from the gathered data with the removed target data; and to determine a noise threshold from the estimated noise floor; and a memory device configured to store the estimated noise floor.
摘要翻译：提供了用于自动确定噪声阈值的系统和方法。在一个实现中，系统包括：被配置为收集关于周围环境的数据的天线; 处理单元，被配置为从所收集的数据中去除表示目标数据的样本; 用已删除的目标数据估计收集的数据中的噪声基数; 并从估计的本底噪声阈值确定; 以及被配置为存储所估计的噪声基底的存储器装置。

5. 发明申请

US20070018883A1 SYSTEMS AND METHODS FOR AUTOMATIC GAIN CONTROL FOR MULTICHANNEL RECEIVERS 有权
标题翻译：用于多通道接收机的自动增益控制的系统和方法
公开(公告)号：US20070018883A1
公开(公告)日：2007-01-25
申请号：US11161163
申请日：2005-07-25
申请人： Jeffrey Hester , Radde Majeed , Julia Baryl
发明人： Jeffrey Hester , Radde Majeed , Julia Baryl
IPC分类号： G01S7/34
CPC分类号： H03G3/3078 , G01S7/34 , G01S7/4021 , H03G3/001 , H03G2201/706 , Y10S73/90
摘要： Apparatus and methods for performing automatic gain control in a radar system. One embodiment of the system includes an attenuator that controls gain of signals received from a radar receiver. A digital signal processor determines coarse gain correction based on digitized noise data for a plurality of channels, determines fine gain correction based on the residual error after the coarse gain, and determines frequency vs. gain curve correction based on the digitized noise data for a plurality of channels and a mathematical model of frequency gain across a noise spectrum for the radar system. The result of the processor is a gain control signal that is sent to the attenuator to perform hardware gain control and a channel specific scale factor for software gain control. In one embodiment, the processor generates the gain control signal during an inactive scan mode of the radar system.
摘要翻译：在雷达系统中执行自动增益控制的装置和方法。该系统的一个实施例包括衰减器，其控制从雷达接收器接收的信号的增益。数字信号处理器基于多个通道的数字化噪声数据来确定粗增益校正，基于粗增益之后的残差来确定精细增益校正，并且基于多个数字化噪声数据确定频率对增益曲线校正的通道和用于雷达系统的噪声频谱的频率增益的数学模型。处理器的结果是发送到衰减器以执行硬件增益控制和用于软件增益控制的通道特定比例因子的增益控制信号。在一个实施例中，处理器在雷达系统的非活动扫描模式期间产生增益控制信号。

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