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：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：US06154101A

公开(公告)日：2000-11-28

申请号：US198079

申请日：1998-11-23

申请人： Qiuzhen Zou ,  Gilbert C. Sih ,  Avneesh Agrawal

发明人： Qiuzhen Zou ,  Gilbert C. Sih ,  Avneesh Agrawal

IPC分类号： G06F7/58 ,  H03K3/84 ,  H04B7/26 ,  H04J13/00 ,  H04J13/10 ,  H03B29/00

CPC分类号： H04J13/0022 ,  G06F7/582 ,  H04J13/10

摘要： A novel and improved method and apparatus for a fast-slewing pseudorandom noise sequence generator is described. One or more loadable PN generators are controlled by a DSP or microprocessor in conjunction with a free-running counter which maintains a reference offset count. The PN generator will typically be part of a finger or searcher. The DSP or microprocessor may assist in other finger or searcher functions as well as the slew function, and can control one or more fingers and/or searchers. Each PN generator is comprised of a loadable linear feedback shift register (LFSR) or its equivalent, a loadable counter for maintaining an index of the state of that particular PN generator, and a slew control device capable of receiving a slew command and controlling the LFSR and index counter to enact an advance or a retard of a certain offset distance.

摘要翻译： 描述了一种用于快速回转伪随机噪声序列发生器的新颖和改进的方法和装置。 一个或多个可加载的PN发生器由DSP或微处理器与自由运行的计数器结合来维持参考偏移计数来控制。 PN发生器通常是手指或搜索器的一部分。 DSP或微处理器可以协助其他手指或搜索器功能以及转换功能，并且可以控制一个或多个手指和/或搜索器。 每个PN发生器由可装载的线性反馈移位寄存器（LFSR）或其等效物组成，用于维持该特定PN发生器的状态的索引的可装载计数器以及能够接收转换命令并控制LFSR的转换控制装置 和索引计数器来产生某个偏移距离的提前或延迟。

公开(公告)号：US06195041B1

公开(公告)日：2001-02-27

申请号：US09150409

申请日：1998-09-09

申请人： William Gardner ,  Avneesh Agrawal ,  Gilbert C. Sih ,  Qiuzhen Zou ,  Inyup Kang

发明人： William Gardner ,  Avneesh Agrawal ,  Gilbert C. Sih ,  Qiuzhen Zou ,  Inyup Kang

IPC分类号： G01S502

CPC分类号： G01S19/235 ,  G01S5/0036 ,  G01S5/0063 ,  G01S19/246 ,  G01S19/254 ,  G01S19/256 ,  G01S19/29 ,  G01S2205/008

摘要： The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment comprises a method for performing position location in a wireless communication system using a set of signals transmitted from a set of satellites including the steps of receiving signal samples, rotating an acquisition code by a first rotation amount yielding a rotated acquisition code, despreading said signal samples using rotated acquisition code yielding despread data, accumulating said despread data over a first duration yielding partially accumulated data, rotating said partially accumulated data by a second rotation amount yielding rotated data and accumulating said rotated data.

摘要翻译： 本发明是一种用于在无线通信系统中执行位置定位的新颖且改进的方法和装置。 一个实施例包括一种用于在使用从一组卫星发送的一组信号的无线通信系统中执行位置定位的方法，包括以下步骤：接收信号样本，使采集码旋转第一旋转量产生旋转采集码，解扩所述 使用旋转获取码的信号样本产生解扩数据，在第一持续时间内积累所述解扩数据产生部分累积的数据，将所述部分累积的数据旋转第二旋转量，产生旋转数据并累加所述旋转的数据。

公开(公告)号：US06615341B2

公开(公告)日：2003-09-02

申请号：US09876189

申请日：2001-06-05

申请人： Gilbert C. Sih ,  Qiuzhen Zou ,  Inyup Kang ,  Quaeed Motiwala ,  Deepu John ,  Li Zhang ,  Haitao Zhang ,  Way-Shing Lee ,  Charles E. Sakamaki ,  Prashant A. Kantak ,  Sanjay K. Jha ,  Jian Lin

发明人： Gilbert C. Sih ,  Qiuzhen Zou ,  Inyup Kang ,  Quaeed Motiwala ,  Deepu John ,  Li Zhang ,  Haitao Zhang ,  Way-Shing Lee ,  Charles E. Sakamaki ,  Prashant A. Kantak ,  Sanjay K. Jha ,  Jian Lin

IPC分类号： G06F9302

CPC分类号： G06F9/3816 ,  G06F9/30014 ,  G06F9/30098 ,  G06F9/30149 ,  G06F9/30152 ,  G06F9/3885 ,  G06F15/7857

摘要： A digital signal processor (DSP) employs a variable-length instruction set. A portion of the variable-length instructions may be stored in adjacent locations within memory space with the beginning and ending of instructions occurring across memory word boundaries. The instructions may contain variable numbers of instruction fragments. Each instruction fragment causes a particular operation, or operations, to be performed allowing multiple operations during each clock cycle. The DSP includes multiple data buses, and in particular three data buses. The DSP may also use a register bank that has registers accessible by at least two processing units, allowing multiple operations to be performed on a particular set of data by the multiple processing units, without reading and writing the data to and from a memory. an instruction fetch unit that receives instructions of variable length stored in an instruction memory. An instruction memory may advantageously be separate from the three data memories. An instruction decoder decodes the instructions from the instruction memory and generates control signals that cause data to be exchanged between the various registers, data memories, and functional units, allowing multiple operations to be performed during each clock cycle.

公开(公告)号：US06425070B1

公开(公告)日：2002-07-23

申请号：US09044086

申请日：1998-03-18

申请人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang ,  Quaeed Motiwala ,  Deepu John ,  Li Zhang ,  Haitao Zhang ,  Way-Shing Lee

发明人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang ,  Quaeed Motiwala ,  Deepu John ,  Li Zhang ,  Haitao Zhang ,  Way-Shing Lee

IPC分类号： G06F9302

CPC分类号： G06F9/3816 ,  G06F9/30014 ,  G06F9/30098 ,  G06F9/30149 ,  G06F9/30152 ,  G06F9/3885 ,  G06F15/7857

摘要： The present invention is a novel and improved method and circuit for digital signal processing. One aspect of the invention calls for the use of a variable length instruction set. A portion of the variable length instructions may be stored in adjacent locations within memory space with the beginning and ending of instructions occurring across memory word boundaries. Furthermore, additional aspects of the invention are realized by having instructions contain variable numbers of instruction fragments. Each instruction fragment causes a particular operation, or operations, to be performed allowing multiple operations during each clock cycle. Thus, multiple operations are performed during each clock cycle, reducing the total number of clock cycles necessary to perform a task. The exemplary DSP includes a set of three data buses over which data may be exchanged with a register bank and three data memories. The use of more than two data buses, and especially three data buses, realizes another aspect of the invention, which is significantly reduced bus contention. One embodiment of the invention calls for the data buses to include one wide bus and two narrow buses. The wide bus is coupled to a wide data memory and the two narrow buses are coupled to two narrow data memories. Another aspect of the invention is realized by the use of a register bank that has registers accessible by at least two processing units. This allows multiple operations to be performed on a particular set of data by the multiple processing units, without reading and writing the data to and from a memory. The processing units in the exemplary embodiment of the invention include an arithmetic logic (ALU) and a multiply-accumulate (MAC) unit. When combined with the use of the multiple bus architecture, highly parallel instructions, or both, an additional aspect of the invention is realized where highly pipelined, multi-operation, processing is performed.

摘要翻译： 本发明是用于数字信号处理的新颖且改进的方法和电路。 本发明的一个方面要求使用可变长度指令集。 可变长度指令的一部分可以存储在存储器空间内的相邻位置，同时跨越存储器字边界的指令的开始和结束。 此外，通过使指令包含可变数量的指令片段来实现本发明的附加方面。 每个指令片段导致执行特定操作或操作，允许在每个时钟周期期间进行多个操作。 因此，在每个时钟周期期间执行多个操作，减少执行任务所需的总时钟周期数。 示例性DSP包括一组三个数据总线，数据可以通过该数据总线与寄存器组和三个数据存储器交换。 使用两条以上的数据总线，特别是三条数据总线，实现了本发明的另一方面，这显着减少了总线竞争。 本发明的一个实施例要求数据总线包括一个宽的总线和两个窄的总线。 宽总线耦合到宽数据存储器，并且两个窄总线耦合到两个窄数据存储器。 通过使用具有可由至少两个处理单元访问的寄存器的寄存器组来实现本发明的另一方面。 这允许通过多个处理单元对特定数据集执行多个操作，而不向存储器读取和写入数据。 本发明的示例性实施例中的处理单元包括算术逻辑（ALU）和乘法累加（MAC）单元。 当结合使用多总线架构，高度并行指令或两者时，实现本发明的另一方面，其中执行高度流水线化，多操作的处理。

公开(公告)号：US06608858B1

公开(公告)日：2003-08-19

申请号：US09491349

申请日：2000-01-26

申请人： Gilbert C. Sih ,  Avneesh Agrawal ,  Mark Roh ,  Brian K. Butler ,  Raghu Challa

发明人： Gilbert C. Sih ,  Avneesh Agrawal ,  Mark Roh ,  Brian K. Butler ,  Raghu Challa

IPC分类号： H04B1707

CPC分类号： H04B1/7087 ,  H04B1/7115 ,  H04B1/7117 ,  H04B2201/70701 ,  H04L27/0014 ,  H04L2027/0032 ,  H04L2027/0057 ,  H04L2027/0087

摘要： A method and apparatus for frequency tracking is described. The present invention provides a tracking mechanism for removing the effects of error due to frequency offset as well as compensation for frequency error due to doppler in a plurality of multipath signals. Each finger of a RAKE receiver utilizing the present invention will compute a frequency error for that finger. The weighted average of all of these frequency errors is calculated and filtered to provide a control signal for varying the frequency of IF and RF frequency synthesizers, accounting for the common frequency offset seen at each finger. Additionally, each finger is equipped with a rotator for providing frequency adjustment specific to that finger. The frequency of each finger is adjusted through feedback of the frequency error for that finger.

摘要翻译： 描述了用于频率跟踪的方法和装置。 本发明提供了一种用于消除由于频率偏移引起的误差的影响的跟踪机制以及由多个多径信号中的多普勒引起的频率误差的补偿。 利用本发明的RAKE接收机的每个手指将计算该手指的频率误差。 计算并滤波所有这些频率误差的加权平均值，以提供用于改变IF和RF频率合成器的频率的控制信号，从而考虑每个手指处的共同频率偏移。 此外，每个手指配备有用于提供特定于该手指的频率调节的旋转器。 每个手指的频率通过该手指的频率误差的反馈进行调整。

公开(公告)号：US06323805B1

公开(公告)日：2001-11-27

申请号：US09150410

申请日：1998-09-09

申请人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang

发明人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang

IPC分类号： G01S514

CPC分类号： G01S5/0036 ,  G01S19/235 ,  G01S19/254 ,  G01S19/258 ,  G01S19/30

摘要： The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location on a subscriber unit in a terrestrial wireless telephone system using a set of satellites each transmitting a signal, the terrestrial wireless telephone system having base stations, including the steps of transmitting an aiding message from the base station to the subscriber unit, said aiding message containing information regarding a data boundary for each signal from the set of satellites, applying correlation codes to each signal yielding corresponding correlation data and accumulating said correlation data over an first interval preceding a corresponding data boundary yielding a first accumulation result, and a second interval following said corresponding data boundary yielding a second accumulation result.

摘要翻译： 本发明是一种用于在无线通信系统中执行位置定位的新颖且改进的方法和装置。 本发明的一个实施例包括一种用于在陆地无线电话系统中的用户单元上执行位置定位的方法，该方法使用一组发射信号的卫星，具有基站的地面无线电话系统包括以下步骤：从 基站到用户单元，所述辅助消息包含关于来自卫星组的每个信号的数据边界的信息，将相关代码应用于产生相应相关数据的每个信号，并在对应的数据边界之前的第一间隔上累加所述相关数据 产生第一累积结果，并且在所述对应数据边界之后的第二间隔产生第二累积结果。

公开(公告)号：US20090082036A1

公开(公告)日：2009-03-26

申请号：US12277104

申请日：2008-11-24

申请人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang

发明人： Qiuzhen Zou ,  Gilbert C. Sih ,  Inyup Kang

IPC分类号： H04W64/00

CPC分类号： G01S5/0036 ,  G01S19/235 ,  G01S19/254 ,  G01S19/258 ,  G01S19/30

摘要： The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method for performing position location on a subscriber unit in a terrestrial wireless telephone system using a set of satellites each transmitting a signal, the terrestrial wireless telephone system having base stations, including the steps of transmitting an aiding message from the base station to the subscriber unit, said aiding message containing information regarding a data boundary for each signal from the set of satellites, applying correlation codes to each signal yielding corresponding correlation data and accumulating said correlation data over an first interval preceding a corresponding data boundary yielding a first accumulation result, and a second interval following said corresponding data boundary yielding a second accumulation result.

摘要翻译： 本发明是一种用于在无线通信系统中执行位置定位的新颖且改进的方法和装置。 本发明的一个实施例包括一种用于在陆地无线电话系统中的用户单元上执行位置定位的方法，该方法使用一组发射信号的卫星，具有基站的地面无线电话系统包括以下步骤：从 基站到用户单元，所述辅助消息包含关于来自卫星组的每个信号的数据边界的信息，将相关代码应用于产生相应相关数据的每个信号，并在对应的数据边界之前的第一间隔上累加所述相关数据 产生第一累积结果，并且在所述对应数据边界之后的第二间隔产生第二累积结果。

公开(公告)号：US06665539B2

公开(公告)日：2003-12-16

申请号：US09775895

申请日：2001-02-01

申请人： Gilbert C. Sih ,  Qiuzhen Zou

发明人： Gilbert C. Sih ,  Qiuzhen Zou

IPC分类号： H04Q720

CPC分类号： G01S19/246 ,  G01S19/235 ,  G01S19/254 ,  G01S19/256 ,  G01S19/29 ,  G01S19/30 ,  G01S19/37 ,  G01S2205/008

摘要： The present invention is a novel and improved method and apparatus for performing position location in wireless communications system. One embodiment of the invention comprises a method of performing position location in a wireless subscriber unit having a local oscillator, including the steps of receiving a position location request, acquiring a timing signal when a sufficient period of time has elapsed since the local oscillator has been corrected and correcting the local oscillator using a correction signal based on the timing signal, substantially freezing the correction signal, performing a position location procedure using the local oscillator with the correction signal applied, and ending said position location procedure.

摘要翻译： 本发明是一种用于在无线通信系统中执行位置定位的新颖且改进的方法和装置。 本发明的一个实施例包括在具有本地振荡器的无线用户单元中执行位置定位的方法，包括以下步骤：接收位置位置请求，当从本地振荡器已经经过足够的时间段时获取定时信号 使用基于定时信号的校正信号校正和校正本地振荡器，基本上冻结校正信号，使用施加了校正信号的本地振荡器执行位置定位过程，并结束所述位置定位过程。