公开(公告)号：US20070263704A1

公开(公告)日：2007-11-15

申请号：US11432580

申请日：2006-05-11

申请人： Vijay Nagarajan ,  Louis Scharf ,  Anand Narayan

发明人： Vijay Nagarajan ,  Louis Scharf ,  Anand Narayan

IPC分类号： H04B1/00

CPC分类号： H04B1/7107 ,  H04B1/712 ,  H04B2201/70703 ,  H04B2201/709727

摘要： A receiver employs low-rate processing to synthesize the effect of high-rate interference in a received multi-rate signal. Each high-rate subchannel is analyzed on its low-rate descendents to produce symbol estimates for each low-rate symbol interval. The symbol estimates are applied to low-rate descendent subchannels, which are then combined to synthesize the effects of the high-rate interference. An interference canceller processes the synthesized interference with the received signal for producing an interference-cancelled signal. Alternatively, analogous steps may be applied at high-rate to analyze, synthesize, and cancel the effects of low-rate interference in a multi-rate signal.

摘要翻译： 接收机采用低速率处理来合成接收的多速率信号中的高速率干扰的影响。 在其低速率后代分析每个高速率子信道，以对每个低速率符号间隔产生符号估计。 符号估计适用于低速率后代子信道，然后将其合并，以合成高速率干扰的影响。 干扰消除器处理与接收信号的合成干扰以产生干扰消除信号。 或者，可以以高速率应用类似的步骤来分析，合成和消除多速率信号中的低速率干扰的影响。

公开(公告)号：US20060229051A1

公开(公告)日：2006-10-12

申请号：US11100940

申请日：2005-04-07

申请人： Anand Narayan ,  Vijay Nagarajan

发明人： Anand Narayan ,  Vijay Nagarajan

IPC分类号： H04B1/10

CPC分类号： H04L25/06 ,  H04B1/71075

摘要： Interference cancellation for CDMA handsets comprises projecting a received signal onto a subspace that is substantially orthogonal to an interference subspace. Selection of the interference subspace includes extracting at least one interfering signal from the received signal. Interference selection may include calculating a signal-power threshold from which the presence or absence of interfering channels is determined. Receiver embodiments are configured for transmit and receive diversity.

摘要翻译： 用于CDMA手机的干扰消除包括将接收的信号投影到基本上与干扰子空间正交的子空间上。 干扰子空间的选择包括从接收到的信号中提取至少一个干扰信号。 干扰选择可以包括计算确定干扰信道的存在或不存在的信号功率阈值。 接收机实施例被配置用于发射和接收分集。

公开(公告)号：US20050169354A1

公开(公告)日：2005-08-04

申请号：US11049112

申请日：2005-04-11

申请人： Eric Olson ,  Anand Narayan

发明人： Eric Olson ,  Anand Narayan

IPC分类号： H04B1/707

CPC分类号： H04B1/7103 ,  H04B1/7107 ,  H04B1/7113

摘要： Systems and methods for searching interference-canceled data are presented. A searcher finger is configured for acquiring a signal that is buried beneath the noise and interference floor due to interference from other signals. The searcher finger can either search for a signal within an uncanceled digital signal or within a substantially interference canceled signal. The substantially interference canceled signal has one or more interfering signals substantially canceled from the digital signal. A Coded Signal Processing Engine is configured for a generating the substantially interference canceled signal by performing signal cancellation on an input signal and transferring the resulting signal to the searcher finger. The searcher finger acquires a signal within the substantially interference canceled signal. The signal cancellation of the processing engine may improve the signal to noise ratio of a signal, which may improve acquisition of the signal by the searcher finger.

摘要翻译： 提出了搜索干扰消除数据的系统和方法。 搜索手指被配置用于由于来自其他信号的干扰而获取埋在噪声和干扰底层之下的信号。 搜索者手指可以搜索未校验的数字信号中的信号或者在基本上干扰消除的信号内。 基本上干扰消除信号具有从数字信号基本抵消的一个或多个干扰信号。 编码信号处理引擎被配置为通过对输入信号执行信号消除并将所得到的信号传送到搜索器手指来产生基本上干扰消除的信号。 搜索者手指获取基本干扰消除信号内的信号。 处理引擎的信号消除可以提高信号的信噪比，这可以改善搜索器手指对信号的采集。

公开(公告)号：US20050180496A1

公开(公告)日：2005-08-18

申请号：US11103138

申请日：2005-04-11

申请人： Eric Olson ,  Anand Narayan ,  John Thomas

发明人： Eric Olson ,  Anand Narayan ,  John Thomas

IPC分类号： G01S19/48 ,  G01S1/00 ,  G01S5/02 ,  G01S5/10 ,  G01S5/14 ,  H04J11/00 ,  H04B1/707

CPC分类号： H04B1/7105 ,  H04B1/7075 ,  H04B1/709 ,  H04B1/7103 ,  H04B1/7117 ,  H04B2001/70706 ,  H04B2201/70701 ,  H04B2201/70715

摘要： A novel serial receiver for a wireless communication system is provided. The communication system comprises: a receiver for receiving a signal y having data parameters; a control processor; the control processor for receiving the signal y and the data parameters; at least two fingers, the control processor for determining which of the data parameters are sent to respective fingers, wherein the at least two fingers have at least a search finger and a tracking finger; and wherein the tracking finger comprises a correlator and a Coded Signal Processing Engine (CSPE), the CSPE for interference cancellation in the reception of the signal y. In addition, numerous other embodiments of the serial receiver are provided along with methods for using the serial receiver.

摘要翻译： 提供了一种用于无线通信系统的新型串行接收机。 通信系统包括：接收器，用于接收具有数据参数的信号y; 一个控制处理器; 用于接收信号y和数据参数的控制处理器; 至少两个手指，所述控制处理器用于确定哪个数据参数被发送到各个手指，其中所述至少两个手指至少具有搜索指和跟踪指; 并且其中所述跟踪指包括相关器和编码信号处理引擎（CSPE），所述CSPE用于接收信号y中的干扰消除。 此外，提供串行接收机的许多其它实施例以及使用串行接收机的方法。

公开(公告)号：US20050123080A1

公开(公告)日：2005-06-09

申请号：US11003881

申请日：2004-12-03

申请人： Anand Narayan ,  Eric Olson

发明人： Anand Narayan ,  Eric Olson

IPC分类号： H04B1/38

CPC分类号： H04B1/7097

摘要： The systems and methods described and illustrated herein provide for serial interference suppression. In one embodiment, a Coded Signal Processing Engine (“CSPE”) serially cancels a plurality of channels corresponding to a plurality of signal paths interfering with a selected signal. For example, in a first interference cancellation, the CSPE may generate a first cancellation operator that is used to project a signal onto a subspace that is substantially orthogonal to a subspace of an interfering signal path and channels of that path. The CSPE may subsequently perform another signal cancellation on the interference canceled output signal of the first signal cancellation by generating a second cancellation operator that projects the signal onto a subspace that is substantially orthogonal to a subspace of another interfering signal path and associated channels. The interference canceled output signal of the second cancellation, therefore, has at least two signals substantially canceled.

摘要翻译： 这里描述和示出的系统和方法提供串行干扰抑制。 在一个实施例中，编码信号处理引擎（“CSPE”）串行地消除对应于干扰所选信号的多个信号路径的多个信道。 例如，在第一干扰消除中，CSPE可以生成用于将信号投影到基本正交于干扰信号路径的子空间和该路径的信道的子空间的第一消除运算符。 CSPE随后可以通过产生将信号投影到基本上正交于另一个干扰信号路径和相关信道的子空间的子空间上的第二消除算子来对第一信号消除的干扰消除输出信号执行另一信号消除。 因此，第二消除的干扰消除输出信号具有至少两个信号基本上被取消。

公开(公告)号：US20090187197A1

公开(公告)日：2009-07-23

申请号：US12184544

申请日：2008-08-01

申请人： Peter J. Roeber ,  James W. Mann ,  Eileen M. Bailey ,  Anand Narayan

发明人： Peter J. Roeber ,  James W. Mann ,  Eileen M. Bailey ,  Anand Narayan

IPC分类号： A61B17/08

CPC分类号： D04B21/12 ,  A61F2/0063 ,  A61L31/048 ,  D10B2509/08 ,  C08L27/18

摘要： Disclosed is a knitted article, and a method of producing such an article, having at least one PTFE fiber with oriented fibrils forming multiple fiber cross-over points wherein PTFE fiber is self-bonded in at least one of the cross-over points.

公开(公告)号：US08218602B2

公开(公告)日：2012-07-10

申请号：US12871748

申请日：2010-08-30

申请人： Anand Narayan ,  Eric S. Olson ,  Prashant Jain

发明人： Anand Narayan ,  Eric S. Olson ,  Prashant Jain

IPC分类号： H04B1/00

CPC分类号： H04B1/7117 ,  H04B1/7107 ,  H04B1/71072 ,  H04B1/7115 ,  H04B2001/71077

摘要： The present invention is directed to the selective provision of interference canceled signal streams to demodulating fingers in a communication receiver. According to the present invention, potential interferer signal paths are identified. Signal streams having one or more potential interferer signals removed or canceled are created, and a correlation is performed to determine whether the strength of a desired signal path increased as a result. If the correlation indicates that the strength of a desired signal path was increased by the signal cancellation, the interference canceled signal stream is provided to the demodulation finger assigned to track the desired signal path. If the correlation determines that the strength of the desired signal path did not increase as a result of performing interference cancellation, the raw or a different interference canceled signal stream is provided to the demodulation finger.

摘要翻译： 本发明涉及在通信接收机中选择性地提供干扰消除信号流来解调手指。 根据本发明，识别潜在的干扰信号路径。 产生具有去除或取消的一个或多个潜在干扰信号的信号流，并且执行相关性以确定所需信号路径的强度是否随之增加。 如果相关性指示所需信号路径的强度通过信号消除而增加，则将干扰消除信号流提供给被分配用于跟踪期望信号路径的解调手指。 如果相关性确定期望信号路径的强度作为执行干扰消除的结果没有增加，则原始或不同的干扰消除信号流被提供给解调手指。

公开(公告)号：US20070183483A1

公开(公告)日：2007-08-09

申请号：US10669954

申请日：2003-09-23

申请人： Anand Narayan ,  Eric Olson ,  Prashant Jain

发明人： Anand Narayan ,  Eric Olson ,  Prashant Jain

IPC分类号： H04B1/00 ,  H03D1/04

CPC分类号： H04B1/7117 ,  H04B1/7107 ,  H04B1/71072 ,  H04B1/7115 ,  H04B2001/71077

摘要： The present invention is directed to the selective provision of interference canceled signal streams to demodulating fingers in a communication receiver. According to the present invention, potential interferer signal paths are identified. Signal streams having one or more potential interferer signals removed or canceled are created, and a correlation is performed to determine whether the strength of a desired signal path increased as a result. If the correlation indicates that the strength of a desired signal path was increased by the signal cancellation, the interference canceled signal stream is provided to the demodulation finger assigned to track the desired signal path. If the correlation determines that the strength of the desired signal path did not increase as a result of performing interference cancellation, the raw or a different interference canceled signal stream is provided to the demodulation finger.

摘要翻译： 本发明涉及在通信接收机中选择性地提供干扰消除信号流来解调手指。 根据本发明，识别潜在的干扰信号路径。 产生具有去除或取消的一个或多个潜在干扰信号的信号流，并且执行相关性以确定所需信号路径的强度是否随之增加。 如果相关性指示所需信号路径的强度通过信号消除而增加，则将干扰消除信号流提供给被分配用于跟踪期望信号路径的解调手指。 如果相关性确定期望信号路径的强度作为执行干扰消除的结果没有增加，则原始或不同的干扰消除信号流被提供给解调手指。

公开(公告)号：US20050101277A1

公开(公告)日：2005-05-12

申请号：US11012817

申请日：2004-12-14

申请人： Anand Narayan ,  Eric Olson

发明人： Anand Narayan ,  Eric Olson

IPC分类号： H04B1/06 ,  H04B1/10 ,  H04B7/00

CPC分类号： H03G3/3089 ,  H04B1/7107

摘要： Systems and methods for adjusting amplitude of an input signal through the application of a gain term are presented. In one embodiment, the gain controller comprises a scaling element that scales the overall signal energy after interference cancellation is performed. This scaling may compensate for overall signal energy reduction resulting from interference cancellation that improves the SNR of the signals of interest. Since prior art receivers typically adjust signal amplitude at the front-end, the gain controller may adjust the amplitude of an interference-canceled signal to a level that is substantially comparable to the level after front-end scaling. The gain controller also comprises a receiving element configured for receiving either an output canceled signal or an uncanceled received signal as an input. For example, the gain controller may receive an interference-canceled signal output from a Coded Signal Processing Engine or a signal with no interfering components removed.

摘要翻译： 提出了通过应用增益项来调整输入信号幅度的系统和方法。 在一个实施例中，增益控制器包括缩放元件，其在执行干扰消除之后对整体信号能量进行缩放。 该缩放可以补偿由干扰消除导致的总体信号能量降低，其改善感兴趣的信号的SNR。 由于现有技术的接收机通常在前端调整信号幅度，所以增益控制器可以将干扰消除信号的幅度调整到基本上与前端缩放后的电平相当的水平。 所述增益控制器还包括被配置为接收输出取消信号或未发送接收信号作为输入的接收元件。 例如，增益控制器可以接收从编码信号处理引擎输出的干扰消除信号或者没有去除干扰成分的信号。

公开(公告)号：US20050075845A1

公开(公告)日：2005-04-07

申请号：US10959618

申请日：2004-10-06

申请人： John Thomas ,  Anand Narayan ,  Eric Olson

发明人： John Thomas ,  Anand Narayan ,  Eric Olson

IPC分类号： G01S1/00 ,  H04B1/707 ,  H04N5/21

CPC分类号： H04B1/7105 ,  G01S19/21 ,  H04B2201/70715

摘要： Systems and methods are provided for directionally filtering signals by projecting a received signal onto a subspace substantially orthogonal to selected interfering signals. The received signal typically comprises at least one signal of interest, at least one selected interfering signal, and noise. The received signal may further comprise other signals, including non-selected interfering signals. The projection of the received signal results in substantially no contribution from the selected interference signals on the signal of interest. For example, substantially no residual energy of the selected interference signals remains as an influence on the signal of interest. In one embodiment, a system generates a converted matrix having a substantially orthogonal set of vectors. Each vector may represent one or more selected interfering signals. The vectors may comprise code characteristics of the selected interfering signals. A directional filter uses the matrix to perform the projection. As such, the filter may be configured to selectively “filter out” the interfering signals by suppressing the effects of the signals based on their code characteristics.

摘要翻译： 提供了系统和方法，用于通过将接收到的信号投影到基本上与所选干扰信号正交的子空间上来定向滤波信号。 所接收的信号通常包括至少一个感兴趣的信号，至少一个选择的干扰信号和噪声。 所接收的信号还可以包括其他信号，包括未选择的干扰信号。 所接收的信号的投影导致对感兴趣的信号上所选择的干扰信号基本上没有贡献。 例如，基本上没有所选干扰信号的剩余能量仍然作为对感兴趣信号的影响。 在一个实施例中，系统生成具有基本上正交的向量集合的转换矩阵。 每个向量可以表示一个或多个选择的干扰信号。 向量可以包括所选择的干扰信号的代码特征。 方向滤波器使用矩阵来执行投影。 这样，滤波器可以被配置为通过基于它们的代码特性来抑制信号的影响来选择性地“滤除”干扰信号。