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公开(公告)号：US08588349B2
公开(公告)日：2013-11-19
申请号：US13253075
申请日：2011-10-05
IPC分类号： H04L25/08
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.
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2.发明申请Interference cancellation in variable codelength systems for multi-access communication 有权用于多访问通信的可变码长系统中的干扰消除公开(公告)号：US20120027138A1
公开(公告)日：2012-02-02
申请号：US13253075
申请日：2011-10-05
IPC分类号： H04L25/08
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。
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3.发明授权Interference cancellation in variable codelength systems for multi-access communication 有权用于多访问通信的可变码长系统中的干扰消除公开(公告)号：US07697595B2
公开(公告)日：2010-04-13
申请号：US11432580
申请日：2006-05-11
申请人： Vijay Nagarajan , Louis L Scharf , Anand P Narayan
发明人： Vijay Nagarajan , Louis L Scharf , Anand P Narayan
IPC分类号： H04B1/69
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。
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4.发明申请Advanced Signal Processors for Interference Suppression in Baseband Receivers 审中-公开用于基带接收机干扰抑制的高级信号处理器公开(公告)号：US20110069796A1
公开(公告)日：2011-03-24
申请号：US12958141
申请日：2010-12-01
申请人： Louis L. Scharf , Vijay Nagarajan
发明人： Louis L. Scharf , Vijay Nagarajan
IPC分类号： H04B1/10
CPC分类号： H04B1/126 , H04B1/1027 , H04B1/1081 , H04B1/7105 , H04B1/7107 , H04B1/7117 , H04B1/712 , H04B7/0678 , H04B7/0891 , H04B2001/1045 , H04B2201/70719 , H04B2201/70979 , H04J13/0022 , H04J13/20
摘要： A multi-mode receiver includes a channel decomposition module (e.g., a Rake receiver) for separating a received signal into multipath components, an interference selector for selecting interfering paths and subchannels, a synthesizer for synthesizing interference signals from selected sub channel symbol estimates, and an interference canceller for cancelling selected interference in the received signal. At least one of the channel decomposition module, the synthesizer, and the interference canceller are configurable for processing multi-mode signals.
摘要翻译： 多模式接收机包括用于将接收信号分离为多路径分量的信道分解模块（例如，Rake接收机），用于选择干扰路径和子信道的干扰选择器，用于合成来自所选子信道符号估计的干扰信号的合成器，以及 干扰消除器，用于消除接收到的信号中的选定干扰。 信道分解模块，合成器和干扰消除器中的至少一个可配置用于处理多模信号。
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5.发明授权Advanced signal processors for interference cancellation in baseband receivers 有权用于基带接收机干扰消除的高级信号处理器公开(公告)号：US07787572B2
公开(公告)日：2010-08-31
申请号：US11204606
申请日：2005-08-15
申请人： Louis L. Scharf , Vijay Nagarajan
发明人： Louis L. Scharf , Vijay Nagarajan
CPC分类号： H04B1/126 , H04B1/1027 , H04B1/1081 , H04B1/7105 , H04B1/7107 , H04B1/7117 , H04B1/712 , H04B7/0678 , H04B7/0891 , H04B2001/1045 , H04B2201/70719 , H04B2201/70979 , H04J13/0022 , H04J13/20
摘要： A multi-mode receiver includes a channel decomposition module (e.g., a Rake receiver) for separating a received signal into multipath components, an interference selector for selecting interfering paths and subchannels, a synthesizer for synthesizing interference signals from selected subchannel symbol estimates, and an interference canceller for cancelling selected interference in the received signal. At least one of the channel decomposition module, the synthesizer, and the interference canceller are configurable for processing multi-mode signals.
摘要翻译： 多模式接收机包括用于将接收到的信号分离为多路径分量的信道分解模块（例如，Rake接收机），用于选择干扰路径和子信道的干扰选择器，用于合成来自所选子信道符号估计的干扰信号的合成器，以及 干扰消除器，用于消除所接收信号中的选定干扰。 信道分解模块，合成器和干扰消除器中的至少一个可配置用于处理多模信号。
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6.发明授权Interference cancellation in variable codelength systems for multi-acess communication 有权用于多访问通信的可变码长系统中的干扰消除公开(公告)号：US08064498B2
公开(公告)日：2011-11-22
申请号：US12727880
申请日：2010-03-19
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。
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公开(公告)号：US07463609B2
公开(公告)日：2008-12-09
申请号：US11192763
申请日：2005-07-29
申请人： Louis L. Scharf , Vijay Nagarajan
发明人： Louis L. Scharf , Vijay Nagarajan
IPC分类号： H04B7/216
CPC分类号： H04B1/7107
摘要： The receiver includes a Rake receiver for separating a received signal into multipath components, an interference selector for selecting interference symbols corresponding to interfering paths and subchannels, a synthesizer for synthesizing an interference signal from selected paths and estimated subchannel symbols, and a canceller for constructing a projection operator or a scale-invariant subtraction operator to cancel selected interference in multipath components of the received signal, or from the received signal itself. The interference canceller may use a sequence of symbol estimates to simultaneously cancel inter-channel interference and inter-symbol interference. Interference cancellers may be placed at one or more locations within the receiver chain.
摘要翻译： 接收机包括用于将接收到的信号分离为多路径分量的Rake接收机，用于选择对应于干扰路径和子信道的干扰符号的干扰选择器，用于合成来自所选路径的干扰信号的合成器和估计的子信道符号，以及用于构建 投影运算符或缩放不变减法运算符，以消除接收信号的多路径分量中的选定干扰，或从接收信号本身。 干扰消除器可以使用符号估计序列来同时消除信道间干扰和符号间干扰。 干扰消除器可以放置在接收器链中的一个或多个位置处。
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公开(公告)号：US09647708B2
公开(公告)日：2017-05-09
申请号：US12871776
申请日：2010-08-30
申请人： Louis L. Scharf , Vijay Nagarajan , John K. Thomas
发明人： Louis L. Scharf , Vijay Nagarajan , John K. Thomas
IPC分类号： H04B1/12 , H04B1/7105 , H04B1/7107 , H04B1/7117 , H04B7/06 , H04B7/08 , H04J13/20 , H04J13/00 , H04B1/712
CPC分类号： H04B1/126 , H04B1/1027 , H04B1/1081 , H04B1/7105 , H04B1/7107 , H04B1/7117 , H04B1/712 , H04B7/0678 , H04B7/0891 , H04B2001/1045 , H04B2201/70719 , H04B2201/70979 , H04J13/0022 , H04J13/20
摘要： A multi-mode receiver includes a channel decomposition module (e.g., a Rake receiver) for separating a received signal into multipath components, an interference selector for selecting interfering paths and subchannels, a synthesizer for synthesizing interference signals from selected sub channel symbol estimates, and an interference canceller for cancelling selected interference in the received signal. At least one of the channel decomposition module, the synthesizer, and the interference canceller are configurable for processing multi-mode signals.
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9.发明申请Advanced Signal Processors for Interference Cancellation in Baseband Receivers 有权用于基带接收机干扰消除的高级信号处理器公开(公告)号：US20100329402A1
公开(公告)日：2010-12-30
申请号：US12871776
申请日：2010-08-30
申请人： Louis L. Scharf , Vijay Nagarajan , John K. Thomas
发明人： Louis L. Scharf , Vijay Nagarajan , John K. Thomas
IPC分类号： H03D1/04
CPC分类号： H04B1/126 , H04B1/1027 , H04B1/1081 , H04B1/7105 , H04B1/7107 , H04B1/7117 , H04B1/712 , H04B7/0678 , H04B7/0891 , H04B2001/1045 , H04B2201/70719 , H04B2201/70979 , H04J13/0022 , H04J13/20
摘要： A multi-mode receiver includes a channel decomposition module (e.g., a Rake receiver) for separating a received signal into multipath components, an interference selector for selecting interfering paths and subchannels, a synthesizer for synthesizing interference signals from selected sub channel symbol estimates, and an interference canceller for cancelling selected interference in the received signal. At least one of the channel decomposition module, the synthesizer, and the interference canceller are configurable for processing multi-mode signals.
摘要翻译： 多模式接收机包括用于将接收信号分离为多路径分量的信道分解模块（例如，Rake接收机），用于选择干扰路径和子信道的干扰选择器，用于合成来自所选子信道符号估计的干扰信号的合成器，以及 干扰消除器，用于消除接收到的信号中的选定干扰。 信道分解模块，合成器和干扰消除器中的至少一个可配置用于处理多模信号。
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10.发明授权公开(公告)号：US08446975B2
公开(公告)日：2013-05-21
申请号：US13372483
申请日：2012-02-13
IPC分类号： H04L1/02
CPC分类号： H04B1/7115 , H04B1/71075 , H04B1/712 , H04B7/0845 , H04B7/0894 , H04B2201/70702 , H04J11/0063
摘要： This invention teaches to the details of an interference suppressing receiver for suppressing intra-cell and inter-cell interference in coded, multiple-access, spread spectrum transmissions that propagate through frequency selective communication channels to a multiplicity of receive antennas. The receiver is designed or adapted through the repeated use of symbol-estimate weighting, subtractive suppression with a stabilizing step-size, and mixed-decision symbol estimates. Receiver embodiments may be designed, adapted, and implemented explicitly in software or programmed hardware, or implicitly in standard RAKE-based hardware either within the RAKE (i.e., at the finger level) or outside the RAKE (i.e., at the user or subchannel symbol level). Embodiments may be employed in user equipment on the forward link or in a base station on the reverse link. It may be adapted to general signal processing applications where a signal is to be extracted from interference.
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