公开(公告)号：US08326240B1

公开(公告)日：2012-12-04

申请号：US12891624

申请日：2010-09-27

申请人： Shubha L. Kadambe ,  Jason A. Fuemmeler ,  Carlos J. Chavez ,  W. Sam Spencer ,  Gina M. Reyes ,  Robert J. Frank ,  Michael N. Newhouse

发明人： Shubha L. Kadambe ,  Jason A. Fuemmeler ,  Carlos J. Chavez ,  W. Sam Spencer ,  Gina M. Reyes ,  Robert J. Frank ,  Michael N. Newhouse

IPC分类号： H04B17/00 ,  H03C1/62

CPC分类号： G01S5/0215 ,  H04B1/70735 ,  H04B17/27 ,  H04B17/336 ,  H04B17/345 ,  H04K3/22 ,  H04K3/228 ,  H04K3/45 ,  H04K3/822

摘要： An apparatus for identifying a specific emitter in the presence of noise and/or interference is disclosed. The apparatus includes a sensor configured to sense radio frequency signal data, the signal data containing noise and signal from at least one emitter, a reference estimation unit configured to estimate a reference signal relating to the signal transmitted by one emitter, a feature estimation unit configured to generate one or more estimates of one or more feature from the reference signal and the signal transmitted by that particular emitter, and an emitter identifier configured to identify the signal transmitted by that particular emitter as belonging to a specific device using one or more feature estimates. The emitter identifier identifies the signal transmitted by that particular emitter as belonging to a specific device using Gaussian Mixture Models and the Bayesian decision engine. The apparatus may also include an SINR enhancement unit configured to enhance the SINR of the data before the reference estimation unit estimates the reference signal.

摘要翻译： 公开了一种用于在存在噪声和/或干扰的情况下识别特定发射器的装置。 该装置包括：传感器，被配置为感测射频信号数据，包含噪声的信号数据和来自至少一个发射器的信号;参考估计单元，被配置为估计与由一个发射器发送的信号有关的参考信号;配置的特征估计单元 从所述参考信号和由所述特定发射器发送的信号产生一个或多个特征的一个或多个估计，以及发射器标识符，其被配置为使用一个或多个特征估计来识别由所述特定发射器发送的属于特定设备的信号 。 发射器标识符将由特定发射器发送的信号识别为使用高斯混合模型和贝叶斯判决引擎的特定设备。 该装置还可以包括被配置为在参考估计单元估计参考信号之前增强数据的SINR的SINR增强单元。

公开(公告)号：US09057772B1

公开(公告)日：2015-06-16

申请号：US12891609

申请日：2010-09-27

申请人： Carlos J. Chavez ,  W. Sam Spencer ,  Shubha L. Kadambe ,  Robert J. Frank ,  Gina M. Reyes ,  Michael N. Newhouse ,  Jason A. Fuemmeler

发明人： Carlos J. Chavez ,  W. Sam Spencer ,  Shubha L. Kadambe ,  Robert J. Frank ,  Gina M. Reyes ,  Michael N. Newhouse ,  Jason A. Fuemmeler

IPC分类号： H04B17/00 ,  G01S5/02 ,  H04B1/7073 ,  H04B17/27 ,  H04B17/336 ,  H04B17/345

CPC分类号： G01S5/0215 ,  H04B1/70735 ,  H04B17/27 ,  H04B17/336 ,  H04B17/345

摘要： Disclosed is an apparatus for estimating the features of a radio frequency signal including a reference signal generator configured for generating a reference signal from a complex signal and one or more feature estimation units configured to generate one or more feature estimates from the reference signal and the complex signal. Techniques for creating reference signals from both signals spread by a scrambling code and FM signals are discussed.

摘要翻译： 公开了一种用于估计射频信号的特征的装置，其包括被配置为从复信号生成参考信号的参考信号发生器和被配置为从参考信号和复合体生成一个或多个特征估计的一个或多个特征估计单元 信号。 讨论了通过扰码和FM信号扩展的两个信号创建参考信号的技术。

公开(公告)号：US08743854B1

公开(公告)日：2014-06-03

申请号：US12891588

申请日：2010-09-27

申请人： Jason A. Fuemmeler ,  Gina M. Reyes ,  Shubha L. Kadambe ,  Robert J. Frank ,  Carlos J. Chavez ,  W. Sam Spencer ,  Michael N. Newhouse

发明人： Jason A. Fuemmeler ,  Gina M. Reyes ,  Shubha L. Kadambe ,  Robert J. Frank ,  Carlos J. Chavez ,  W. Sam Spencer ,  Michael N. Newhouse

IPC分类号： H04B7/216

CPC分类号： H04B17/336 ,  H04B1/7107

摘要： An apparatus and method for signal separation and SINR improvement is disclosed. In particular, disclosed is an iterative technique whereby a noisy signal, that may include signals from one or more distinct emitters, is first improved through an SINR improvement technique. Next, one signal from the noisy signal is identified and a reference signal substantially free of noise and interference is generated for this signal, and then this reference signal is subtracted from the noisy signal. This process is repeated until no other signals may be identified. In this way, the signal with the highest SINR may be identified first and then removed from the original signal. As such, the identified signal is no longer present as interference for the remaining signals, thus improving each of the remaining signals' respective SINRs.

摘要翻译： 公开了一种用于信号分离和SINR改进的装置和方法。 特别地，公开了一种迭代技术，其中可以包括来自一个或多个不同发射器的信号的噪声信号首先通过SINR改进技术得到改进。 接下来，识别来自噪声信号的一个信号，并为该信号产生基本上没有噪声和干扰的参考信号，然后从噪声信号中减去该参考信号。 重复该过程，直到不能识别出其它信号。 以这种方式，可以首先识别具有最高SINR的信号，然后从原始信号中去除。 因此，所识别的信号不再作为对剩余信号的干扰而存在，从而改善了每个剩余信号的各自的SINR。

公开(公告)号：US08699971B1

公开(公告)日：2014-04-15

申请号：US13679025

申请日：2012-11-16

申请人： Shubha L. Kadambe ,  Jason A. Fuemmeler ,  Carlos J. Chavez ,  William S. Spencer ,  Gina M. Reyes ,  Robert J. Frank ,  Michael N. Newhouse

发明人： Shubha L. Kadambe ,  Jason A. Fuemmeler ,  Carlos J. Chavez ,  William S. Spencer ,  Gina M. Reyes ,  Robert J. Frank ,  Michael N. Newhouse

IPC分类号： H04B17/00

CPC分类号： G01S5/0215 ,  H04B1/70735 ,  H04B17/27 ,  H04B17/336 ,  H04B17/345 ,  H04K3/22 ,  H04K3/228 ,  H04K3/45 ,  H04K3/822

摘要： An apparatus for identifying a specific emitter in the presence of noise and/or interference is disclosed. The apparatus includes a sensor configured to sense radio frequency signal data, the signal data containing noise and signal from at least one emitter, a reference estimation unit configured to estimate a reference signal relating to the signal transmitted by one emitter, a feature estimation unit configured to generate one or more estimates of one or more feature from the reference signal and the signal transmitted by that particular emitter, and an emitter identifier configured to identify the signal transmitted by that particular emitter as belonging to a specific device using one or more feature estimates. The emitter identifier identifies the signal transmitted by that particular emitter as belonging to a specific device using Gaussian Mixture Models and the Bayesian decision engine.

摘要翻译： 公开了一种用于在存在噪声和/或干扰的情况下识别特定发射器的装置。 该装置包括：传感器，被配置为感测射频信号数据，包含噪声的信号数据和来自至少一个发射器的信号;参考估计单元，被配置为估计与由一个发射器发送的信号有关的参考信号;配置的特征估计单元 从所述参考信号和由所述特定发射器发送的信号产生一个或多个特征的一个或多个估计，以及发射器标识符，其被配置为使用一个或多个特征估计来识别由所述特定发射器发送的属于特定设备的信号 。 发射器标识符将由特定发射器发送的信号识别为使用高斯混合模型和贝叶斯判决引擎的特定设备。

公开(公告)号：US08488578B1

公开(公告)日：2013-07-16

申请号：US12891638

申请日：2010-09-27

申请人： Jason A. Fuemmeler ,  Shubha L. Kadambe ,  Gina M. Reyes

发明人： Jason A. Fuemmeler ,  Shubha L. Kadambe ,  Gina M. Reyes

IPC分类号： H04W4/00

CPC分类号： H04B1/70735 ,  H04B7/0617

摘要： An apparatus for identifying a scrambling code used in the received CDMA-based signal. The apparatus includes a frame timing estimation unit configured to estimate a frame timing of the received CDMA-based signal, a searching unit configured to search for and select a scrambling code seed based on at least the estimated frame timing, and a seed evaluation unit configured to determine if the selected scrambling code seed is the correct seed used in the received CDMA-based signal. The searching unit is further configured to provide an identified scrambling code seed based on an indication from the seed evaluation unit that the selected scrambling code seed is the correct seed. The apparatus may also include a scrambling code generator configured to generate the scrambling code from the identified seed.

摘要翻译： 一种用于识别在所接收的基于CDMA的信号中使用的扰码的装置。 该装置包括：帧定时估计单元，被配置为估计接收到的基于CDMA的信号的帧定时;搜索单元，被配置为至少基于所估计的帧定时搜索并选择扰码种子;以及种子评估单元， 以确定所选择的扰码种子是否是在接收的基于CDMA的信号中使用的正确种子。 搜索单元还被配置为基于来自种子评估单元的指示来提供所识别的扰码种子，所述选择的扰码种子是正确的种子。 该装置还可以包括被配置为从所识别的种子生成扰码的扰码发生器。