公开(公告)号：US06980611B1

公开(公告)日：2005-12-27

申请号：US09497292

申请日：2000-02-03

申请人： Michael A. Marino, Jr.

发明人： Michael A. Marino, Jr.

IPC分类号： H04B1/10 ,  H04D1/04

CPC分类号： H04B1/1027

摘要： A system for suppressing ambient signals from a signal containing radiated emissions of a electronic device and ambient signals. The system comprises a first receiver operative to receive the ambient signals and the radiated emissions from the electronic device. The first receiver is operative to demodulate and digitize the ambient signals and the radiated emissions. The system further comprises a second receiver operative to receive primarily the ambient signals wherein the second receiver is time and frequency synchronized to the first receiver and operative to demodulate and digitize the ambient signals. A central computer is in electrical communication with the first and second receivers and is operative to store and process the ambient signals and the radiated emissions from respective ones of the first and second receivers. Accordingly, the central computer is configured as an adaptive filter operative to suppress the ambient signals correlated between the first and second receivers. Therefore, the radiated emissions from the electronic device are extracted thereby.

摘要翻译： 一种用于抑制来自包含电子设备的辐射发射和环境信号的信号的环境信号的系统。 该系统包括第一接收器，用于接收来自电子设备的环境信号和辐射发射。 第一个接收器用于解调和数字化环境信号和辐射发射。 该系统还包括第二接收器，其操作以主要接收环境信号，其中第二接收机与第一接收机进行时间和频率同步，并可操作以解调和数字化环境信号。 中央计算机与第一和第二接收器电气通信，并且可操作以存储和处理来自第一和第二接收器中的相应信号的环境信号和辐射发射。 因此，中央计算机被配置为用于抑制与第一和第二接收机之间相关的环境信号的自适应滤波器。 因此，提取来自电子设备的辐射发射。

公开(公告)号：US07499487B2

公开(公告)日：2009-03-03

申请号：US11290850

申请日：2005-11-30

申请人： Georgios Ginis ,  Chia-Ning Peng

发明人： Georgios Ginis ,  Chia-Ning Peng

IPC分类号： H04L5/16 ,  H04D1/04 ,  H04J3/10

CPC分类号： H04B3/32

摘要： Systems and methods are disclosed for determining mitigating noise in multi-pair communication system. A receiver coordinated system can include an error estimator that estimates noise for a first line of a plurality lines and provides an error estimate for the first line. A noise predictor applies a predetermined cross-correlation value to the error estimate to provide a correlated noise term that describes noise cross-correlation between the first line and a second line of the plurality of lines. A noise decorrelation component applies the cross-correlated noise term to substantially decorrelate noise for the second line.

摘要翻译： 公开了用于确定多对通信系统中的减轻噪声的系统和方法。 接收机协调系统可以包括估计多条线路的第一行的噪声的误差估计器，并且为第一行提供误差估计。 噪声预测器将预定的互相关值应用于误差估计，以提供描述多条线中的第一线和第二线之间的噪声互相关的相关噪声项。 噪声去相关分量将交叉相关噪声项应用于对第二行进行基本去相关噪声。

公开(公告)号：US07003058B2

公开(公告)日：2006-02-21

申请号：US10086127

申请日：2002-02-27

申请人： Susan E. Bach ,  Kurt W. Loheit ,  Remy O. Hiramoto

发明人： Susan E. Bach ,  Kurt W. Loheit ,  Remy O. Hiramoto

IPC分类号： H04D1/04 ,  H03D1/06 ,  H03K5/01 ,  H04B1/10 ,  H04L1/00

CPC分类号： H04B1/525 ,  H04J15/00

摘要： A telecommunication system includes a transmitter configured to modulate a forward link RF carrier with a first set of data; a receiver configured to demodulate a second set of data from a return link RF carrier; an orthomode transducer having two linear ports and a circular waveguide port, where one of the linear ports is connected as an input from the transmitter and another linear port is simultaneously connected as an output to the receiver; an antenna; and a linear-to-circular polarizer connected to the circular waveguide port and connected to the antenna, where the linear-to-circular polarizer is configured so that a first linear polarization at the circular waveguide port results in a first circular polarization at the antenna and a second circular polarization at the antenna results in a second linear polarization at the circular waveguide port.

公开(公告)号：US07079609B2

公开(公告)日：2006-07-18

申请号：US10631583

申请日：2003-07-31

申请人： Thomas V. D'Amico ,  Roger L. Peterson

发明人： Thomas V. D'Amico ,  Roger L. Peterson

IPC分类号： H04D1/04 ,  H03K6/04

CPC分类号： H04W16/14 ,  H04W74/04

摘要： A communication system is designed that reduces co-channel interference when heterogeneous users are sharing spectrum. The system design enables a plurality of pairs of users to communicate their channel utilization time periods by using the durations and start or stop times of certain transmissions to signal the start times and durations of later transmissions. Other system users using possibly different communications protocols and different modulation technologies can measure the durations of received transmissions and to infer channel usage based on these durations.

摘要翻译： 设计了一种通信系统，在异构用户共享频谱时减少同频干扰。 系统设计使得多对用户能够通过使用某些传输的持续时间和开始或停止时间来传达其信道利用时间周期，以表示后续传输的开始时间和持续时间。 使用可能不同的通信协议和不同调制技术的其他系统用户可以测量接收到的传输的持续时间并且基于这些持续时间推断信道使用。