公开(公告)号：US20120307872A1

公开(公告)日：2012-12-06

申请号：US13588297

申请日：2012-08-17

申请人： Mark HAHM ,  Wei Luo ,  Arkady Molev-Shteiman ,  Hongwei Kong ,  Xiao-Feng Qi ,  Li Fung Chang ,  Nelson Sollenberger

发明人： Mark HAHM ,  Wei Luo ,  Arkady Molev-Shteiman ,  Hongwei Kong ,  Xiao-Feng Qi ,  Li Fung Chang ,  Nelson Sollenberger

IPC分类号： H04B1/711 ,  H04B1/10

CPC分类号： H04B1/712 ,  H04J11/0063 ,  H04J13/0044 ,  H04J13/0048

摘要： Aspects of a method and system for interference suppression in WCDMA systems may include one or more circuits that are operable to receive a plurality of multipath signals via one or more receiving antennas. A plurality of weighting factor values may be computed based on the received multipath signals. Estimated signals may be based on the weighting factor values. Residual signals may be generated based on received signals and the estimated signals. Addback signals may be generated based on the estimated signals and the residual signals. Updated estimated signals may be generated based on the addback signals and the weighting factor values. Incremental signals may be generated based on the updated estimated signals and addback signals. Updated residual signals may be generated based on the incremental signals and previous residual signals. The interference suppressed signals may be generated based on the updated residual signals and updated estimated signals.

摘要翻译： 用于WCDMA系统中的干扰抑制的方法和系统的方面可以包括可操作以经由一个或多个接收天线接收多个多径信号的一个或多个电路。 可以基于接收的多路径信号来计算多个加权因子值。 估计信号可以基于加权因子值。 可以基于接收的信号和估计的信号来产生残余信号。 可以基于估计的信号和残留信号来生成附加信号。 可以基于附加信号和加权因子值来生成更新的估计信号。 可以基于更新的估计信号和加法信号来产生增量信号。 可以基于增量信号和先前的剩余信号来生成更新的残留信号。 可以基于更新的残差信号和更新的估计信号来产生干扰抑制信号。

公开(公告)号：US20110090996A1

公开(公告)日：2011-04-21

申请号：US12582771

申请日：2009-10-21

申请人： Mark Hahm ,  Wei Luo ,  Arkady Molev-Shteiman ,  Hongwei Kong ,  Xiao-Feng Qi ,  Li Fung Chang ,  Nelson Sollenberger

发明人： Mark Hahm ,  Wei Luo ,  Arkady Molev-Shteiman ,  Hongwei Kong ,  Xiao-Feng Qi ,  Li Fung Chang ,  Nelson Sollenberger

IPC分类号： H04L1/02

CPC分类号： H04B1/712 ,  H04J11/0063 ,  H04J13/0044 ,  H04J13/0048

摘要： Aspects of a method and system for interference suppression in WCDMA systems may include one or more circuits that are operable to receive a plurality of multipath signals via one or more receiving antennas. A plurality of weighting factor values may be computed based on the received multipath signals. Estimated signals may be based on the weighting factor values. Residual signals may be generated based on received signals and the estimated signals. Addback signals may be generated based on the estimated signals and the residual signals. Updated estimated signals may be generated based on the addback signals and the weighting factor values. Incremental signals may be generated based on the updated estimated signals and addback signals. Updated residual signals may be generated based on the incremental signals and previous residual signals. The interference suppressed signals may be generated based on the updated residual signals and updated estimated signals.

摘要翻译： 用于WCDMA系统中的干扰抑制的方法和系统的方面可以包括可操作以经由一个或多个接收天线接收多个多径信号的一个或多个电路。 可以基于接收的多路径信号来计算多个加权因子值。 估计信号可以基于加权因子值。 可以基于接收的信号和估计的信号来产生残余信号。 可以基于所估计的信号和残留信号来生成附加信号。 可以基于附加信号和加权因子值来生成更新的估计信号。 可以基于更新的估计信号和加法信号来产生增量信号。 可以基于增量信号和先前的剩余信号来生成更新的残留信号。 可以基于更新的残差信号和更新的估计信号来产生干扰抑制信号。

公开(公告)号：US07881391B2

公开(公告)日：2011-02-01

申请号：US11615722

申请日：2006-12-22

申请人： Sudhakar Kalluri ,  Xiao-Feng Qi ,  Keith A. Holt

发明人： Sudhakar Kalluri ,  Xiao-Feng Qi ,  Keith A. Holt

IPC分类号： H04K1/10 ,  H04L27/28 ,  H03K9/00 ,  H04L27/00

CPC分类号： H04L25/0204 ,  H04L5/0023 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/03197 ,  H04L25/03286 ,  H04L25/03318 ,  H04L25/067 ,  H04L27/2647 ,  H04L2025/03414 ,  H04L2025/0342 ,  H04L2025/03426

摘要： Embodiments of an OFDM receiver and methods for decoding OFDM symbols of two or more data streams with reduced multiplication operations are generally described herein. Other embodiments may be described and claimed. In some embodiments, one or more terms of a modified L2-squared-norm cost function are precomputed and stored for predetermined complex symbol values of one or more tones of OFDM symbols prior to performing a searching process. During the searching process, the cost function is computed using the precomputed terms and received data symbols using shifting and adding operations, rather than multiplication operations. In other embodiments, non-L2-squared-norm cost functions are used.

摘要翻译： OFDM接收机的实施例和用于解码具有减小的乘法运算的两个或多个数据流的OFDM符号的方法在本文中一般地被描述。 可以描述和要求保护其他实施例。 在一些实施例中，在执行搜索过程之前，对经修改的L2平方规范成本函数的一个或多个项进行预计算并存储用于OFDM符号的一个或多个音调的预定复符号值。 在搜索过程中，使用预计算项和使用移位和相加操作的接收数据符号来计算成本函数，而不是乘法运算。 在其他实施例中，使用非L2平方规范成本函数。

公开(公告)号：US07013226B2

公开(公告)日：2006-03-14

申请号：US10686340

申请日：2003-10-14

申请人： Chunming Han ,  Amod V. Dandawate ,  Xiao-Feng Qi

发明人： Chunming Han ,  Amod V. Dandawate ,  Xiao-Feng Qi

IPC分类号： G01R19/00 ,  G06F15/00 ,  H04B3/20

CPC分类号： G01M11/3145

摘要： Various embodiments are described for an improved reflectometer and/or a modem or other device which may include an improved reflectometer. An apparatus may include a pulse transmitter to transmit a pulse to a line to be tested, a receiver adapted to receive a reflection of the transmitted pulse, and a zero-echo canceling system coupled to the transmitter and receiver. The zero-echo canceling system may be adapted to at least partially cancel a received zero-echo by generating a zero-echo canceling signal based on the transmitted pulse and to calculate an error signal as a difference between the zero-echo and the zero-echo canceling signal.

摘要翻译： 对于可以包括改进的反射计的改进的反射计和/或调制解调器或其他设备描述了各种实施例。 一种装置可以包括：脉冲发射器，用于向要测试的线路发送脉冲;接收器，适于接收所发射的脉冲的反射;以及耦合到发射器和接收器的零回波消除系统。 零回波消除系统可以适于通过基于所发送的脉冲产生零回波消除信号来至少部分地消除接收到的零回波，并且将误差信号计算为零回波和零回波之间的差， 回波消除信号。

公开(公告)号：US20050080599A1

公开(公告)日：2005-04-14

申请号：US10686340

申请日：2003-10-14

申请人： Chunming Han ,  Amod Dandawate ,  Xiao-Feng Qi

发明人： Chunming Han ,  Amod Dandawate ,  Xiao-Feng Qi

IPC分类号： G01M11/00 ,  G06F15/00

CPC分类号： G01M11/3145

摘要： Various embodiments are described for an improved reflectometer and/or a modem or other device which may include an improved reflectometer.

摘要翻译： 对于可以包括改进的反射计的改进的反射计和/或调制解调器或其他设备描述了各种实施例。

公开(公告)号：US20050031026A1

公开(公告)日：2005-02-10

申请号：US10635526

申请日：2003-08-07

申请人： Huaiyu Zeng ,  Jimmy Tran ,  Ashutosh Dixit ,  Xiao-Feng Qi

发明人： Huaiyu Zeng ,  Jimmy Tran ,  Ashutosh Dixit ,  Xiao-Feng Qi

IPC分类号： H04B1/38 ,  H04L29/08

CPC分类号： H04L69/32

摘要： Methods and systems provide for operating a modem system having a transmit functionality and a receive functionality. The transmit functionality is implemented in hardware and portions of the receive functionality are implemented in software. In one approach, the receive functionality is partitioned between the software and the hardware based on a resource budget of a computer associated with the modem system.

摘要翻译： 方法和系统提供操作具有发射功能和接收功能的调制解调器系统。 传输功能以硬件实现，并且接收功能的一部分以软件实现。 在一种方法中，基于与调制解调器系统相关联的计算机的资源预算，接收功能在软件和硬件之间进行分区。