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公开(公告)号：US07916050B1
公开(公告)日：2011-03-29
申请号：US12580032
申请日：2009-10-15
IPC分类号： H03M1/06
CPC分类号： H03M1/004 , H03M1/1215 , H03M1/123
摘要： Previously, when designing receivers for radio frequency (RF) or wireless communications, designers chose between time-interleaved (TI) analog-to-digital converters (ADCs) for intermediate frequency architectures and dual channel ADCs for direct conversion architectures. Here, similarities between TI ADCs and dual channel ADC were recognized, and an ADC that has the capability of operating as a TI ADCs and dual channel ADC is provided. This allows designer to have greatly increased flexibility during the design process which can greatly reduce design costs, while also allowing the manufacturer of the ADC to realize a reduction in its operating costs.
摘要翻译： 以前，当设计用于射频（RF）或无线通信的接收机时，设计人员选择用于中频架构的时间交织（TI）模数转换器（ADC）和用于直接转换架构的双通道ADC。 在这里，TI ADC和双通道ADC之间的相似之处得到了认可，并且提供了具有作为TI ADC和双通道ADC运作能力的ADC。 这允许设计人员在设计过程中大大提高灵活性，从而大大降低设计成本，同时还允许ADC的制造商实现降低运行成本。
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公开(公告)号：US20110090107A1
公开(公告)日：2011-04-21
申请号：US12580032
申请日：2009-10-15
IPC分类号： H03M1/12
CPC分类号： H03M1/004 , H03M1/1215 , H03M1/123
摘要： Previously, when designing receivers for radio frequency (RF) or wireless communications, designers chose between time-interleaved (TI) analog-to-digital converters (ADCs) for intermediate frequency architectures and dual channel ADCs for direct conversion architectures. Here, similarities between TI ADCs and dual channel ADC were recognized, and an ADC that has the capability of operating as a TI ADCs and dual channel ADC is provided. This allows designer to have greatly increased flexibility during the design process which can greatly reduce design costs, while also allowing the manufacturer of the ADC to realize a reduction in its operating costs.
摘要翻译： 以前，当设计用于射频（RF）或无线通信的接收机时，设计人员选择用于中频架构的时间交织（TI）模数转换器（ADC）和用于直接转换架构的双通道ADC。 在这里，TI ADC和双通道ADC之间的相似之处得到了认可，并且提供了具有作为TI ADC和双通道ADC运作能力的ADC。 这允许设计人员在设计过程中大大提高灵活性，从而大大降低设计成本，同时还允许ADC的制造商实现降低运行成本。
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3.发明授权公开(公告)号：US08094050B2
公开(公告)日：2012-01-10
申请号：US13032407
申请日：2011-02-22
IPC分类号： H03M1/10
CPC分类号： H03M1/1061 , H03M1/1215
摘要： With high speed, high resolution time-interleaved (TI) analog-to-digital converters (ADCs), bandwidth mismatches between the various ADC branches can pose a significant problem. Previously, though, no adequate solution has been found. Here, a method and apparatus are provided that can calculate and compensate for bandwidth mismatches in a TI ADC, enabling a high speed, high resolution TI ADC to be produced.
摘要翻译： 采用高速，高分辨率时间交错（TI）模数转换器（ADC），各种ADC分支之间的带宽不匹配可能会造成重大问题。 以前，虽然没有找到足够的解决方案。 这里提供了一种方法和装置，可以计算和补偿TI ADC中的带宽不匹配，从而实现高速，高分辨率TI ADC的生产。
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公开(公告)号：US07916051B1
公开(公告)日：2011-03-29
申请号：US12572831
申请日：2009-10-02
IPC分类号： H03M1/10
CPC分类号： H03M1/1061 , H03M1/1215
摘要： With high speed, high resolution time-interleaved (TI) analog-to-digital converters (ADCs), bandwidth mismatches between the various ADC branches can pose a significant problem. Previously, though, no adequate solution has been found. Here, a method and apparatus are provided that can calculate and compensate for bandwidth mismatches in a TI ADC, enabling a high speed, high resolution TI ADC to be produced.
摘要翻译： 采用高速，高分辨率时间交错（TI）模数转换器（ADC），各种ADC分支之间的带宽不匹配可能会造成重大问题。 以前，虽然没有找到足够的解决方案。 这里提供了一种方法和装置，可以计算和补偿TI ADC中的带宽不匹配，从而实现高速，高分辨率TI ADC的生产。
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公开(公告)号：US08351542B2
公开(公告)日：2013-01-08
申请号：US12414000
申请日：2009-03-30
申请人： Zigang Yang , Fernando A. Mujica , Gregory Copeland , Murtaza Ali
发明人： Zigang Yang , Fernando A. Mujica , Gregory Copeland , Murtaza Ali
IPC分类号： H04L25/03
CPC分类号： H04L25/49
摘要： An apparatus and system are provided for crest factor reduction (CFR). Preferably, a peak from the wideband signal is detected. A gain from the magnitude of the peak and a threshold can then be calculated. Based on this information, each carrier's contribution to the peak can be approximated, and a cancellation pulse coefficient for each carrier from its contribution to the peak can be calculated. A base cancellation pulse can be calculated from the cancellation pulse coefficients for each carrier, and a cancellation pulse can be calculated from the base cancellation pulse and the gain, which can then be applied to the wideband signal.
摘要翻译： 提供了用于波峰因数降低（CFR）的装置和系统。 优选地，检测来自宽带信号的峰值。 然后可以计算从峰值的幅度和阈值的增益。 基于该信息，可以近似每个载波对峰值的贡献，并且可以计算每个载波对峰值的贡献的抵消脉冲系数。 可以根据每个载波的消除脉冲系数来计算基本消除脉冲，并且可以从基本消除脉冲和增益计算抵消脉冲，然后可以将其提供给宽带信号。
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公开(公告)号：US20100246714A1
公开(公告)日：2010-09-30
申请号：US12414000
申请日：2009-03-30
申请人： Zigang Yang , Fernando A. Mujica , Gregory Copeland , Murtaza Ali
发明人： Zigang Yang , Fernando A. Mujica , Gregory Copeland , Murtaza Ali
IPC分类号： H04L25/49
CPC分类号： H04L25/49
摘要： An apparatus and system are provided for crest factor reduction (CFR). Preferably, a peak from the wideband signal is detected. A gain from the magnitude of the peak and a threshold can then be calculated. Based on this information, each carrier's contribution to the peak can be approximated, and a cancellation pulse coefficient for each carrier from its contribution to the peak can be calculated. A base cancellation pulse can be calculated from the cancellation pulse coefficients for each carrier, and a cancellation pulse can be calculated from the base cancellation pulse and the gain, which can then be applied to the wideband signal.
摘要翻译： 提供了用于波峰因数降低（CFR）的装置和系统。 优选地，检测来自宽带信号的峰值。 然后可以计算从峰值的幅度和阈值的增益。 基于该信息，可以近似每个载波对峰值的贡献，并且可以计算每个载波对峰值的贡献的抵消脉冲系数。 可以根据每个载波的消除脉冲系数来计算基本消除脉冲，并且可以从基本消除脉冲和增益计算抵消脉冲，然后可以将其提供给宽带信号。
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公开(公告)号：US07221754B2
公开(公告)日：2007-05-22
申请号：US10356787
申请日：2003-02-01
申请人： Fernando A. Mujica
发明人： Fernando A. Mujica
IPC分类号： H04M3/00
CPC分类号： H04B3/23 , H04B3/03 , H04L12/6418 , H04L2012/6478 , H04L2012/6491
摘要： A method is provided for accomplishing asymmetric digital subscriber loop classification and the design of passive hybrid networks for each of the classes. The resulting hybrids are suitable for implementation in a switchable hybrid architecture.
摘要翻译： 提供了一种用于完成非对称数字用户环路分类的方法以及针对每个类别的被动混合网络的设计。 所产生的混合动力适用于可切换混合架构中的实现。
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8.发明授权Hardware assisted automatic gain control for digital subscriber line modems 有权数字用户线调制解调器的硬件辅助自动增益控制公开(公告)号：US06480068B1
公开(公告)日：2002-11-12
申请号：US09966055
申请日：2001-09-28
IPC分类号： H03G310
CPC分类号： H03G3/3042
摘要： The present invention provides a hardware assisted automatic gain control (AGC) for a communication network. A dedicated hardware portion of the AGC, which works in cooperation with software implemented functionality (400), is included to detect saturation conditions in the internal nodes of the analog front end (200) in which a plurality of gain stages (PGA1, PGA2, PGA3) and filter stages (H1, H2, H3) are interleaved with inaccessible intermediate points. The saturation detection logic includes a comparator (21, 22, 23) and flip-flop (27, 28, 29) for each gain stage (PGA1, PGA2, PGA3) and can be integrated directly in the analog front end 200. The dedicated hardware can further be included in a codec of a modem in a digital subscriber line (DSL) system.
摘要翻译： 本发明提供了一种用于通信网络的硬件辅助自动增益控制（AGC）。 包括与软件实现的功能（400）协同工作的AGC的专用硬件部分，以检测模拟前端（200）的内部节点中的饱和状态，其中多个增益级（PGA1，PGA2， PGA3）和滤波器级（H1，H2，H3）与不可访问的中间点交错。 饱和检测逻辑包括用于每个增益级（PGA1，PGA2，PGA3）的比较器（21,22,23）和触发器（27,28,29），并且可以直接集成在模拟前端200中。专用 硬件可以进一步包括在数字用户线（DSL）系统中的调制解调器的编解码器中。
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公开(公告)号：US08437424B2
公开(公告)日：2013-05-07
申请号：US12718152
申请日：2010-03-05
申请人： Fernando A. Mujica , Hardik P. Gandhi , Kun Shi
发明人： Fernando A. Mujica , Hardik P. Gandhi , Kun Shi
CPC分类号： H04L25/03343
摘要： Performing digital predistortion (DPD) for widely spaced narrowband signals, such as the signal used in multi-carrier GSM, can be very difficult. Here, a system is provided the performs DPD for widely spaced narrowband signals. In particular, this system uses a polynomial curve for values of a cross-correlation function (above a predetermined threshold) to determine a delay estimate, which allows for a more robust and accurate system.
摘要翻译： 对于广泛间隔的窄带信号（例如在多载波GSM中使用的信号）执行数字预失真（DPD）可能是非常困难的。 这里，提供了一种用于宽间隔窄带信号的DPD的系统。 特别地，该系统使用用于互相关函数（高于预定阈值）的值的多项式曲线来确定延迟估计，其允许更健壮和准确的系统。
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公开(公告)号：US20110216851A1
公开(公告)日：2011-09-08
申请号：US12718152
申请日：2010-03-05
申请人： Fernando A. Mujica , Hardik P. Gandhi , Kun Shi
发明人： Fernando A. Mujica , Hardik P. Gandhi , Kun Shi
CPC分类号： H04L25/03343
摘要： Performing digital predistortion (DPD) for widely spaced narrowband signals, such as the signal used in multi-carrier GSM, can be very difficult. Here, a system is provided the performs DPD for widely spaced narrowband signals. In particular, this system uses a polynomial curve for values of a cross-correlation function (above a predetermined threshold) to determine a delay estimate, which allows for a more robust and accurate system.
摘要翻译： 对于广泛间隔的窄带信号（例如在多载波GSM中使用的信号）执行数字预失真（DPD）可能是非常困难的。 这里，提供了一种用于宽间隔窄带信号的DPD的系统。 特别地，该系统使用用于互相关函数（高于预定阈值）的值的多项式曲线来确定延迟估计，其允许更健壮和准确的系统。
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