公开(公告)号：US09014740B2

公开(公告)日：2015-04-21

申请号：US13481692

申请日：2012-05-25

申请人： Nelson Sollenberger ,  Wei Luo ,  Xiao-Feng Qi ,  Kaiping Li

发明人： Nelson Sollenberger ,  Wei Luo ,  Xiao-Feng Qi ,  Kaiping Li

IPC分类号： H04W56/00 ,  H04W48/16 ,  H04W88/06 ,  H04W52/02 ,  H04W76/04

CPC分类号： H04W56/0015 ,  H04W52/0216 ,  H04W76/28 ,  H04W88/06 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/24

摘要： A technique for time tracking helps a mobile communication device with multiple SIMs to more accurately maintain synchronization with a base station. By utilizing synchronization information from both SIMs, the technique is able to more frequently and more accurately adjust timing information for each SIM. As a result, the mobile communication device exhibits an increased ability to accurately synchronize without the need for a higher precision reference or increased power consumption.

摘要翻译： 用于时间跟踪的技术帮助具有多个SIM的移动通信设备更准确地保持与基站的同步。 通过利用来自两个SIM的同步信息，该技术能够更频繁和更准确地调整每个SIM的定时信息。 结果，移动通信设备表现出增加的准确同步的能力，而不需要更高精度的参考或增加的功耗。

公开(公告)号：US08077796B2

公开(公告)日：2011-12-13

申请号：US11714433

申请日：2007-03-05

申请人： Xiao-Feng Qi ,  Keith Holt

发明人： Xiao-Feng Qi ,  Keith Holt

IPC分类号： H04B15/00

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0656

摘要： Systems and methods for utilizing new communication standards in wireless local area networks are provided that also support legacy wireless stations. The method can include user equipment determining channel state information, selecting a unitary channel decomposition precoder format based on the determined channel state information and transmitting the precoder format information to a base station. During a return transmission the user equipment can receive user data with the precoder format information and utilize a non-linear detector to demodulate and decode the user data. Based on the reception the user equipment can estimate channel quality; and transmitting channel quality information as feedback.

摘要翻译： 提供了在无线局域网中利用新通信标准的系统和方法，其还支持传统无线站。 该方法可以包括用户设备确定信道状态信息，基于所确定的信道状态信息选择酉信道分解预编码器格式，并将预编码器格式信息发送到基站。 在返回传输期间，用户设备可以利用预编码器格式信息接收用户数据，并利用非线性检测器对用户数据进行解调和解码。 基于接收，用户设备可以估计信道质量; 并且传输信道质量信息作为反馈。

公开(公告)号：US20130150112A1

公开(公告)日：2013-06-13

申请号：US13481692

申请日：2012-05-25

申请人： Xiao-Feng Qi ,  Nelson Sollenberger ,  Wei Luo ,  Kaiping Li

发明人： Xiao-Feng Qi ,  Nelson Sollenberger ,  Wei Luo ,  Kaiping Li

IPC分类号： H04W56/00 ,  H04W48/16 ,  H04W88/06

CPC分类号： H04W56/0015 ,  H04W52/0216 ,  H04W76/28 ,  H04W88/06 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/144 ,  Y02D70/168 ,  Y02D70/24

摘要： A technique for time tracking helps a mobile communication device with multiple SIMs to more accurately maintain synchronization with a base station. By utilizing synchronization information from both SIMs, the technique is able to more frequently and more accurately adjust timing information for each SIM. As a result, the mobile communication device exhibits an increased ability to accurately synchronize without the need for a higher precision reference or increased power consumption.

摘要翻译： 用于时间跟踪的技术帮助具有多个SIM的移动通信设备更准确地保持与基站的同步。 通过利用来自两个SIM的同步信息，该技术能够更频繁和更准确地调整每个SIM的定时信息。 结果，移动通信设备表现出增加的准确同步的能力，而不需要更高精度的参考或增加的功耗。

公开(公告)号：US08284819B2

公开(公告)日：2012-10-09

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： H04B1/00

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：US20060217937A1

公开(公告)日：2006-09-28

申请号：US11376626

申请日：2006-03-14

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

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

IPC分类号： G06F15/00

CPC分类号： G01M11/3145

摘要： Various embodiments are directed to a zero-echo canceling system adapted to at least partially cancel a received zero-echo by calculating an error signal as a difference between the zero-echo and a zero-echo canceling signal.

摘要翻译： 各种实施例涉及一种零回波消除系统，其适于通过计算作为零回波和零回波消除信号之间的差异的误差信号来至少部分地消除所接收的零回波。

公开(公告)号：US08503506B2

公开(公告)日：2013-08-06

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： H04B1/707

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：US20080219376A1

公开(公告)日：2008-09-11

申请号：US11714433

申请日：2007-03-05

申请人： Xiao-Feng Qi ,  Keith Holt

发明人： Xiao-Feng Qi ,  Keith Holt

IPC分类号： H04B15/00

CPC分类号： H04B7/0417 ,  H04B7/0632 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0656

摘要： Systems and methods for utilizing new communication standards in wireless local area networks are provided that also support legacy wireless stations. The method can include user equipment determining channel state information, selecting a unitary channel decomposition precoder format based on the determined channel state information and transmitting the precoder format information to a base station. During a return transmission the user equipment can receive user data with the precoder format information and utilize a non-linear detector to demodulate and decode the user data. Based on the reception the user equipment can estimate channel quality; and transmitting channel quality information as feedback.

摘要翻译： 提供了在无线局域网中利用新通信标准的系统和方法，其还支持传统无线站。 该方法可以包括用户设备确定信道状态信息，基于所确定的信道状态信息选择酉信道分解预编码器格式，并将预编码器格式信息发送到基站。 在返回传输期间，用户设备可以利用预编码器格式信息接收用户数据，并利用非线性检测器对用户数据进行解调和解码。 基于接收，用户设备可以估计信道质量; 并且传输信道质量信息作为反馈。

公开(公告)号：US20080152027A1

公开(公告)日：2008-06-26

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

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L 2 -Squared-norm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。 在其它实施例中，使用非L 2 - 标准规范成本函数。

公开(公告)号：US20060276714A1

公开(公告)日：2006-12-07

申请号：US11144682

申请日：2005-06-06

申请人： Gordon Holt ,  Brandon Barnett ,  Richard Wykoff ,  Sorin Davidovici ,  Xiao-Feng Qi

发明人： Gordon Holt ,  Brandon Barnett ,  Richard Wykoff ,  Sorin Davidovici ,  Xiao-Feng Qi

IPC分类号： A61B5/02

CPC分类号： A61B5/0006 ,  A61B5/0205 ,  A61B5/0428 ,  A61B5/411 ,  A61B2560/045 ,  A61B2560/0462 ,  G06F19/00 ,  Y10S128/903

摘要： A monitoring device having a signal receiver, a pseudo-ground, a digital processor and a transceiver, the signal receiver having an ability to receive a sensed signal representing a patient vital sign, the pseudo-ground having an ability to generate a baseline signal that is compared with the sensed signal, the transceiver having an ability to wirelessly transmit a processed signal from the digital processor to a base station or a wireless gateway and to receive an incoming signal from the base station or the wireless gateway, and the digital processor having an ability to process the sensed signal and the incoming signal locally within the monitoring device is disclosed.

摘要翻译： 一种具有信号接收器，伪地面，数字处理器和收发器的监测装置，所述信号接收器具有接收表示患者生命体征的感测信号的能力，所述伪地面具有产生基线信号的能力， 与感测到的信号进行比较，收发器具有将经处理的信号从数字处理器无线地发送到基站或无线网关并且从基站或无线网关接收输入信号的能力，并且数字处理器具有 公开了在监视装置内处理感测信号和输入信号本地的能力。

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。