公开(公告)号：US07046701B2

公开(公告)日：2006-05-16

申请号：US09973249

申请日：2001-10-09

申请人： Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

发明人： Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

IPC分类号： H04J3/02

CPC分类号： H04J3/047 ,  H04L7/0008 ,  H04L7/0029 ,  H04L7/02

摘要： A composite signal has two components, each carrying a stream of information that may be digital. In one application of a method according to an embodiment of the invention, at least one of the components is delayed such that a time relation between the streams of information is altered. The components are transferred via a common signal path such that upon transfer, the original time relation between the streams of information may be restored.

公开(公告)号：US06999500B2

公开(公告)日：2006-02-14

申请号：US10005453

申请日：2001-11-02

申请人： Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

发明人： Mohammad J. Mohseni ,  Brian K. Butler ,  Deepu John ,  Haitao Zhang

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC分类号： H04B1/7093 ,  H04B1/707

摘要： A spreading system according to an embodiment of the invention spreads two data signals. The system produces a filtered signal that is based on one of the data signals and an output signal that is based on both of the data signals. In one example, a spreading system is used to perform QPSK spreading of two data signals, including separate processing of the two data signals, in a practical manner. Such separate control may include filtering and/or gain control.

公开(公告)号：US06820103B2

公开(公告)日：2004-11-16

申请号：US10003913

申请日：2001-10-31

申请人： Brian K. Butler ,  Deepu John ,  Haitao Zhang ,  Mohammad J. Mohseni

发明人： Brian K. Butler ,  Deepu John ,  Haitao Zhang ,  Mohammad J. Mohseni

IPC分类号： G06F1710

CPC分类号： H03H17/0657 ,  H03H17/0226 ,  H03H17/0238 ,  H03H17/06 ,  H03H17/0607

摘要： A system for digital filtering includes a set of logic gates, a state storage, and a multiplexer. The state storage includes two or more storage banks and may also include combinatorial logic and/or at least one lookup table. In one application, a filtering operation according to a finite-impulse-response filter coefficient vector is performed without runtime multiplications. Applications to symmetric and antisymmetric filter coefficient vectors are described, as well as applications to filter coefficient vectors of arbitrary odd or even length.

摘要翻译： 用于数字滤波的系统包括一组逻辑门，状态存储器和多路复用器。 状态存储器包括两个或多个存储体，并且还可以包括组合逻辑和/或至少一个查找表。 在一个应用中，根据有限脉冲响应滤波器系数向量进行滤波操作，而不进行运行时乘法。 对对称和反对称滤波器系数向量的应用进行了描述，以及用于滤除任意奇数或偶数长度的系数向量的应用。

公开(公告)号：US08774816B2

公开(公告)日：2014-07-08

申请号：US12793794

申请日：2010-06-04

申请人： Tao Chen ,  Baaziz Achour ,  Brian K. Butler ,  Edward G. Tiedemann, Jr. ,  Haitao Zhang ,  Keith W. Saints ,  Luca Blessent ,  Yongbin Wei

发明人： Tao Chen ,  Baaziz Achour ,  Brian K. Butler ,  Edward G. Tiedemann, Jr. ,  Haitao Zhang ,  Keith W. Saints ,  Luca Blessent ,  Yongbin Wei

IPC分类号： H04B7/00 ,  H04B1/02 ,  H04W72/00 ,  H04B1/38 ,  H04J1/16 ,  H04B7/185 ,  H04B7/216 ,  H04W4/00

CPC分类号： H04W4/06 ,  H04L12/189 ,  H04W52/08 ,  H04W52/322 ,  H04W52/327 ,  H04W52/54 ,  H04W72/005

摘要： A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

摘要翻译： 使用动态共享前向链路信道（或“数据”信道）将组播数据发送到一组无线设备，例如使用用于数据信道的公共长码掩码。 参考功率控制（PC）位也在数据通道上发送并用于信号质量估计。 共享的前向链路控制信道用于向各个无线设备发送用户特定的信令，例如对于每个无线设备使用时分多路复用（TDM）和唯一的长码掩码。 共享的前向链路指示符信道用于向无线设备发送反向链路（RL）PC比特，例如使用TDM。 数据通道由接收数据通道的所有无线设备共同供电控制。 控制和指示器通道由每个无线设备单独进行功率控制，使得在这些信道上为无线设备发送的信令和RL PC位被可靠地接收。

公开(公告)号：US06680727B2

公开(公告)日：2004-01-20

申请号：US09966256

申请日：2001-09-27

申请人： Brian K. Butler ,  Haitao Zhang ,  Paul E. Bender ,  Yu-Cheun Jou

发明人： Brian K. Butler ,  Haitao Zhang ,  Paul E. Bender ,  Yu-Cheun Jou

IPC分类号： H04B1500

CPC分类号： H04B1/7107

摘要： Techniques for canceling pilot interference in a wireless (e.g., CDMA) communication system. A received signal typically includes a number of signal instances (i.e., multipaths). For each multipath desired to be processed, the other multipaths act as interference on the desired multipath. If the pilot is generated based on a known data pattern (e.g., all zeros) and covered with a known channelization code (e.g., a Walsh code of zero), then the pilot in an interfering multipath may be estimated as the spreading sequence at a time offset corresponding to the arrival time of that multipath. The pilot interference from each interference multipath may be estimated based on the spreading sequence for the interfering multipath and the despreading sequence for the desired multipath. The total pilot interference from a number of interfering multipaths may be subtracted from the data component in the desired multipath to provide pilot-canceled data having improved performance.

摘要翻译： 用于在无线（例如CDMA）通信系统中消除导频干扰的技术。 接收到的信号通常包括多个信号实例（即，多路径）。 对于希望被处理的每个多路径，其他多路径用作所需多路径上的干扰。 如果基于已知数据模式（例如，全零）并且用已知的信道化码（例如，沃尔什码为零）来覆盖导频，则干扰多径中的导频可以被估计为在 对应于该多径的到达时间的时间偏移。 来自每个干扰多路径的导频干扰可以基于干扰多路径的扩展序列和所需多径的解扩序列来估计。 来自多个干扰多径的总导频干扰可以从期望的多路径中的数据分量中减去，以提供具有改进性能的导频取消数据。

公开(公告)号：US06243561B1

公开(公告)日：2001-06-05

申请号：US09172068

申请日：1998-10-13

申请人： Brian K. Butler ,  Haitao Zhang ,  Edward G. Tiedemann, Jr. ,  Qiuzhen Zou ,  Gilbert C. Sih ,  Avneesh Agrawal

发明人： Brian K. Butler ,  Haitao Zhang ,  Edward G. Tiedemann, Jr. ,  Qiuzhen Zou ,  Gilbert C. Sih ,  Avneesh Agrawal

IPC分类号： H04L2706

CPC分类号： H04B1/70751 ,  H04B1/7077 ,  H04B1/70775 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04W52/0229 ,  Y02D70/40

摘要： A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.

摘要翻译： 描述了一种用于执行寻呼的新颖和改进的方法。 在本发明的一个实施例中，搜索器用于检测扩频信号。 样本接收的RF信号被存储在样本缓冲器中。 在待机模式期间，在分配给移动台的寻呼时隙期间收集采样。 对样本执行一组搜索，并且如果检测到导频信号，则执行附加解调以检测寻呼消息。 可以组合所得到的解调数据集以增加检测。 在检测到页面消息之后，可以激活附加解调资源以处理更完整的页面消息或其他信息信道。 在本发明的一个实施例中，搜索器包括一个解调器，用于执行快速页面检测，而无需使用手指元件来减少空闲模式功耗。

公开(公告)号：US07113537B2

公开(公告)日：2006-09-26

申请号：US10832918

申请日：2004-04-26

申请人： Brian K. Butler ,  Haitao Zhang ,  Edward G. Tiedemann, Jr.

发明人： Brian K. Butler ,  Haitao Zhang ,  Edward G. Tiedemann, Jr.

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC分类号： H04B1/70752 ,  H04B1/707 ,  H04B1/70775 ,  H04B1/7097 ,  H04B2201/70701 ,  H04B2201/70707 ,  H04W68/025

摘要： A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.

摘要翻译： 描述了一种用于执行寻呼的新颖和改进的方法。 在本发明的一个实施例中，搜索器用于检测扩频信号。 样品接收的RF信号存储在样品缓冲液中。 在待机模式期间，在分配给移动台的寻呼时隙期间收集采样。 对样本执行一组搜索，并且如果检测到导频信号，则执行附加解调以检测寻呼消息。 可以组合所得到的解调数据集以增加检测。 在检测到页面消息之后，可以激活附加解调资源以处理更完整的页面消息或其他信息信道。 在本发明的一个实施例中，搜索器包括解调器，用于执行快速页面检测，而不需要使用手指元件来减少空闲模式功耗。

公开(公告)号：US06584313B2

公开(公告)日：2003-06-24

申请号：US09828588

申请日：2001-04-05

申请人： Brian K. Butler ,  Haitao Zhang ,  Edward G. Tiedemann, Jr. ,  Qiuzhen Zou ,  Gilbert C. Sih ,  Avneesh Agrawal

发明人： Brian K. Butler ,  Haitao Zhang ,  Edward G. Tiedemann, Jr. ,  Qiuzhen Zou ,  Gilbert C. Sih ,  Avneesh Agrawal

IPC分类号： H04Q720

CPC分类号： H04B1/70751 ,  H04B1/7077 ,  H04B1/70775 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04W52/0229 ,  Y02D70/40

摘要： A novel and improved method for performing paging is described. In one embodiment of the invention a searcher is used to detect spread spectrum signals. Samples received RF signals are stored in a sample buffer. During standby mode, the samples are gathered during paging slots assigned to the mobile. A set of searches are performed on the samples, and if pilot signals are detected additional demodulation is performed to detect paging messages. The resulting set of demodulation data may be combined to increase detection. After a page message has been detected, additional demodulation resources may be activated to processes more complete page messages, or other information channels. In one embodiment of the invention, the searcher includes a demodulator to perform quick page detection without the use of finger elements to reduce idle mode power consumption.

摘要翻译： 描述了一种用于执行寻呼的新颖和改进的方法。 在本发明的一个实施例中，搜索器用于检测扩频信号。 样品接收的RF信号存储在样品缓冲液中。 在待机模式期间，在分配给移动台的寻呼时隙期间收集采样。 对样本执行一组搜索，并且如果检测到导频信号，则执行附加解调以检测寻呼消息。 可以组合所得到的解调数据集以增加检测。 在检测到页面消息之后，可以激活附加解调资源以处理更完整的页面消息或其他信息信道。 在本发明的一个实施例中，搜索器包括一个解调器，用于执行快速页面检测，而无需使用手指元件来减少空闲模式功耗。

公开(公告)号：US20100246471A1

公开(公告)日：2010-09-30

申请号：US12793794

申请日：2010-06-04

申请人： Tao Chen ,  Baaziz Achour ,  Brian K. Butler ,  Edward G. Tiedemann, JR. ,  Haitao Zhang ,  Keith W. Saints ,  Luca Blessent ,  Yongbin Wei

发明人： Tao Chen ,  Baaziz Achour ,  Brian K. Butler ,  Edward G. Tiedemann, JR. ,  Haitao Zhang ,  Keith W. Saints ,  Luca Blessent ,  Yongbin Wei

IPC分类号： H04W40/00

CPC分类号： H04W4/06 ,  H04L12/189 ,  H04W52/08 ,  H04W52/322 ,  H04W52/327 ,  H04W52/54 ,  H04W72/005

摘要： A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

摘要翻译： 使用动态共享前向链路信道（或“数据”信道）将组播数据发送到一组无线设备，例如使用用于数据信道的公共长码掩码。 参考功率控制（PC）位也在数据通道上发送并用于信号质量估计。 共享的前向链路控制信道用于向各个无线设备发送用户特定的信令，例如对于每个无线设备使用时分多路复用（TDM）和唯一的长码掩码。 共享的前向链路指示符信道用于向无线设备发送反向链路（RL）PC比特，例如使用TDM。 数据通道由接收数据通道的所有无线设备共同供电控制。 控制和指示器通道由每个无线设备单独进行功率控制，使得在这些信道上为无线设备发送的信令和RL PC位被可靠地接收。

公开(公告)号：US07734257B2

公开(公告)日：2010-06-08

申请号：US10889926

申请日：2004-07-12

申请人： Tao Chen ,  Baaziz Achour ,  Brian K. Butler ,  Edward G. Tiedemann, Jr. ,  Haitao Zhang ,  Keith W. Saints ,  Luca Blessent ,  Yongbin Wei

发明人： Tao Chen ,  Baaziz Achour ,  Brian K. Butler ,  Edward G. Tiedemann, Jr. ,  Haitao Zhang ,  Keith W. Saints ,  Luca Blessent ,  Yongbin Wei

IPC分类号： H04B1/00

CPC分类号： H04W4/06 ,  H04L12/189 ,  H04W52/08 ,  H04W52/322 ,  H04W52/327 ,  H04W52/54 ,  H04W72/005

摘要： A dynamic shared forward link channel (or “data” channel) is used to send multicast data to a group of wireless devices, e.g., using a common long code mask for the data channel. Reference power control (PC) bits are also sent on the data channel and used for signal quality estimation. A shared forward link control channel is used to send user-specific signaling to individual wireless devices, e.g., using time division multiplexing (TDM) and a unique long code mask for each wireless device. A shared forward link indicator channel is used to send reverse link (RL) PC bits to the wireless devices, e.g., using TDM. The data channel is jointly power controlled by all wireless devices receiving the data channel. The control and indicator channels are individually power controlled by each wireless device such that the signaling and RL PC bits sent on these channels for the wireless device are reliably received.

摘要翻译： 使用动态共享前向链路信道（或“数据”信道）将组播数据发送到一组无线设备，例如使用用于数据信道的公共长码掩码。 参考功率控制（PC）位也在数据通道上发送并用于信号质量估计。 共享的前向链路控制信道用于向各个无线设备发送特定于用户的信令，例如对于每个无线设备使用时分复用（TDM）和唯一长码掩码。 共享的前向链路指示符信道用于向无线设备发送反向链路（RL）PC比特，例如使用TDM。 数据通道由接收数据通道的所有无线设备共同供电控制。 控制和指示器通道由每个无线设备单独进行功率控制，使得在这些信道上为无线设备发送的信令和RL PC位被可靠地接收。