公开(公告)号：US07649860B2

公开(公告)日：2010-01-19

申请号：US10061874

申请日：2002-01-31

Applicant: Inyup Kang ,  Christopher Patrick ,  Bruce R. Meagher ,  Shimman Patel ,  Tao Li ,  Joseph Cheung ,  Pillappakkam Srinivas ,  Gregory B. Foerster ,  Srinivas Varadarajan ,  Jian Wei

Inventor： Inyup Kang ,  Christopher Patrick ,  Bruce R. Meagher ,  Shimman Patel ,  Tao Li ,  Joseph Cheung ,  Pillappakkam Srinivas ,  Gregory B. Foerster ,  Srinivas Varadarajan ,  Jian Wei

IPC: H04B7/212

CPC classification number: H04B1/707 ,  H04B1/7075 ,  H04B2201/70709

Abstract: A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a “real-time” or “off-line” mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.

Abstract translation: 用于CDMA和GPS信号的导频搜索器。 在一个方面，搜索器与“实时”或“离线”模式中的采样缓冲器结合操作。 可以通过公共端口以TDM方式执行对/从缓冲器的读取/从缓冲器的读取/读取，并且可以在存储在缓冲器中之前对样本进行抽取和打包。 在另一方面，对导频的总体搜索被划分成多个任务，其中每个任务对应于在给定采样段上的搜索，并且基于特定的一组参数值。 任务可以存储在队列中，并根据队列中的顺序一次执行一次。 在执行新任务之前，将该任务的参数值下载到一组配置寄存器。 可以对参数进行排序和链接，以便仅下载新值。

公开(公告)号：US07602749B2

公开(公告)日：2009-10-13

申请号：US10179121

申请日：2002-06-24

Applicant: James A. Proctor, Jr.

Inventor： James A. Proctor, Jr.

IPC: H04B7/216

CPC classification number: H04B7/2628 ,  H04B1/7075 ,  H04B1/70754 ,  H04B2001/70706 ,  H04B2201/70703 ,  H04B2201/70709 ,  H04B2201/70715 ,  H04J13/0022 ,  H04J13/004 ,  H04J13/16 ,  H04J13/18 ,  H04L1/0007 ,  H04L1/165 ,  H04L1/1809 ,  H04L7/06 ,  H04L25/14 ,  H04L27/2601 ,  H04Q11/0428 ,  H04Q2213/13098 ,  H04Q2213/13202 ,  H04Q2213/13204 ,  H04Q2213/13209 ,  H04Q2213/13216 ,  H04Q2213/1327 ,  H04Q2213/13298 ,  H04Q2213/13332 ,  H04Q2213/1336 ,  H04Q2213/13389 ,  H04W24/00 ,  H04W28/20 ,  H04W28/22 ,  H04W56/00 ,  H04W56/0045 ,  H04W56/0075 ,  H04W72/0413 ,  H04W72/044 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0466 ,  H04W74/00 ,  H04W74/04 ,  H04W76/28 ,  H04W84/14

Abstract: A service option overlay for a CDMA wireless communication in which multiple allocatable subchannels are defined on a reverse link by assigning different code phases of a given long pseudonoise (PN) code to each subchannel. The instantaneous bandwidth needs of each on-line subscriber unit are then met by dynamically allocating none, one, or multiple subchannels on an as needed basis for each network layer connection. The system efficiently provides a relatively large number of virtual physical connections between the subscriber units and the base stations on the reverse link for extended idle periods such as when computers connected to the subscriber units are powered on, but not presently actively sending or receiving data. These maintenance subchannels permit the base station and the subscriber units to remain in phase and time synchronism. This in turn allows fast acquisition of additional subchannels as needed by allocating new code phase subchannels. Preferably, the code phases of the new channels are assigned according to a predetermined code phase relationship with respect to the code phase of the corresponding maintenance subchannel.

公开(公告)号：US07519101B1

公开(公告)日：2009-04-14

申请号：US11006934

申请日：2004-12-07

Applicant: David G. Wright

Inventor： David G. Wright

IPC: H04B1/00

CPC classification number: H04B1/707 ,  H04B2201/70709 ,  H04J13/0022 ,  H04J13/10

Abstract: Communication circuitry uses a combination of Pseudo-Noise (PN) coded and non-PN coded transmission periods to represent different data values. In one embodiment, a number of data values are encoded into a smaller second number of encoded ternary values. The Pseudo-Noise (PN) codes are transmitted representing some of the encoded ternary values and no transmitted PN codes represent other encoded ternary values. The throughput of spread spectrum radio systems is increased by representing data values in fewer spread spectrum time slots.

Abstract translation: 通信电路使用伪噪声（PN）编码和非PN编码的传输周期的组合来表示不同的数据值。 在一个实施例中，将多个数据值编码为较小的第二数量的编码三进制值。 发送代表一些编码三进制值的伪噪声（PN）码，并且没有发送的PN码表示其它编码的三进制值。 通过在较少的扩展频谱时隙中表示数据值来增加扩频无线电系统的吞吐量。

公开(公告)号：US20090074035A1

公开(公告)日：2009-03-19

申请号：US12275309

申请日：2008-11-21

Applicant: Shigeyuki SUDO ,  Osamu Hasegawa ,  Toshiya Eguchi

Inventor： Shigeyuki SUDO ,  Osamu Hasegawa ,  Toshiya Eguchi

IPC: H04B1/707

CPC classification number: H04B1/70756 ,  H04B1/707 ,  H04B1/7075 ,  H04B2201/70709 ,  H04W52/029 ,  Y02D70/26 ,  Y02D70/40

Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.

Abstract translation: 一种用于CDMA系统的接收机，其通过由低功率定时器监视暂停时段来减少在间歇接收操作的暂停时间段期间的功耗，从而关闭VC-TCXO，参考信号组生成和接收单元以及调制解调器单元 被设置为睡眠状态。 在恢复接收操作时，开始高精度定时器对一段时间进行计数，并存储接收信号的一部分。 在该时间段内计算存储数据的PN码相位，以获得相位偏差的指示值。 基于指示值计算短码和长码的状态向量和另外的接收时间。 当高精度定时器对时间段进行计数并产生0V（d）时，起动解调，解复用和解扰器单元的解调操作开始并且在接收时间期间继续。

公开(公告)号：US20080316993A1

公开(公告)日：2008-12-25

申请号：US11815206

申请日：2006-01-19

Applicant: Xia Zhu ,  Yan Li

Inventor： Xia Zhu ,  Yan Li

IPC: H04B7/216

CPC classification number: H04B1/7093 ,  H04B2201/70709

Abstract: The present invention discloses a method and apparatus for implementing matched filter in a system using QPSK modulation. In the present invention, a multiplier is changed as a multiplexer by using the characteristic of the pilot sequence (or training sequence) so as to implement the matched filter.

Abstract translation: 本发明公开了一种在使用QPSK调制的系统中实现匹配滤波器的方法和装置。 在本发明中，乘法器通过使用导频序列（或训练序列）的特性作为多路复用器而改变，以便实现匹配滤波器。

公开(公告)号：US07403507B2

公开(公告)日：2008-07-22

申请号：US09883740

申请日：2001-06-18

Applicant: John G. McDonough ,  Juncheng C. Liu ,  Yan Hui ,  Chunhao Chen

Inventor： John G. McDonough ,  Juncheng C. Liu ,  Yan Hui ,  Chunhao Chen

IPC: H04B7/216

CPC classification number: H04B1/70756 ,  H04B2201/70709

Abstract: A sleep control system and method are provided that permit a reference clock and the direct sequence spread spectrum (DSSS) modem in a mobile station receiver to be turned off and turned back on at arbitrary points in time while still maintaining accurate base station system time. Accurate timing is made possible through a number of techniques including precise initial calibration using a rising edge/falling edge averaging system, determining the sleep clock and reference clock frequencies, and the determination of the frequency drift of the sleep clock that occurred during the previous sleep interval.

Abstract translation: 提供一种睡眠控制系统和方法，其允许移动台接收机中的参考时钟和直接序列扩频（DSSS）调制解调器在任意时间点被关闭并重新接通，同时仍保持精确的基站系统时间。 通过包括使用上升沿/下降沿平均系统的精确初始校准，确定睡眠时钟和参考时钟频率以及确定在先前睡眠期间发生的睡眠时钟的频率漂移的许多技术，可以实现准确的定时 间隔。

公开(公告)号：US07251508B2

公开(公告)日：2007-07-31

申请号：US11086893

申请日：2005-03-21

Applicant: Ganesh Pattabiraman ,  John M. Burke

Inventor： Ganesh Pattabiraman ,  John M. Burke

IPC: H04B7/00 ,  H04B1/16

CPC classification number: H04W56/0015 ,  G06F1/3203 ,  H04B1/707 ,  H04B1/713 ,  H04B2201/70709 ,  H04W52/0216 ,  H04W52/0229 ,  H04W56/00 ,  H04W84/18 ,  H04W88/06 ,  Y02D10/126 ,  Y02D70/1224 ,  Y02D70/144 ,  Y02D70/40

Abstract: Method for reducing power consumption in Bluetooth and CDMA modes of operation is disclosed. According to a disclosed embodiment, the time for a next scheduled CDMA wakeup process to be performed by a CDMA module is established. Thereafter, if the next CDMA wakeup process is scheduled to be performed before the next Bluetooth wakeup process, a Bluetooth wakeup process is synchronized to be performed by a Bluetooth module at the same time as the next CDMA wakeup process. Following, when the time arrives for the CDMA module to perform the next CDMA wakeup process, the Bluetooth module also performs the Bluetooth wakeup process.

Abstract translation: 公开了降低蓝牙和CDMA操作模式的功耗的方法。 根据所公开的实施例，建立由CDMA模块执行的下一个调度的CDMA唤醒过程的时间。 此后，如果下一个CDMA唤醒处理被调度为在下一个蓝牙唤醒处理之前执行，则蓝牙唤醒处理被同步以由蓝牙模块在下一个CDMA唤醒处理的同时进行。 以下，当CDMA模块执行下一个CDMA唤醒处理的时间到来时，蓝牙模块还执行蓝牙唤醒处理。

公开(公告)号：US20070036104A1

公开(公告)日：2007-02-15

申请号：US11201364

申请日：2005-08-11

Applicant: Rainer Bachl ,  Francis Dominique ,  Hongwei Kong ,  Walid Nabhane

Inventor： Rainer Bachl ,  Francis Dominique ,  Hongwei Kong ,  Walid Nabhane

IPC: H04Q7/00

CPC classification number: H04L1/0054 ,  H04B2201/70709 ,  H04L1/0072

Abstract: In a method of detecting a signal, a control channel associated with a physical channel may be decoded to produce at least one decoding metric. A control channel signal on the control channel may then be detected based on the decoding metric.

Abstract translation: 在检测信号的方法中，可以对与物理信道相关联的控制信道进行解码以产生至少一个解码度量。 然后可以基于解码度量来检测控制信道上的控制信道信号。

公开(公告)号：US07095290B2

公开(公告)日：2006-08-22

申请号：US10499106

申请日：2001-12-18

Applicant: Hannu Häkkinen ,  Pekka Kyösti

Inventor： Hannu Häkkinen ,  Pekka Kyösti

IPC: H04L27/22 ,  H04L9/00

CPC classification number: H04L27/2071 ,  H04B1/707 ,  H04B2201/70709 ,  H04L27/362

Abstract: Method and system for generating higher order modulations with QPSK modulators. A complex sequence of binary digits is input to QPSK modulators. The binary digits are mapped to constellation points and multiplied with weighting coefficient. Constellation points of higher order modulation are mapped to inputs of the QPSK modulator, and, after modulation QPSK symbols are summed to compose symbols of higher order modulation.

Abstract translation: 用QPSK调制器产生高阶调制的方法和系统。 将二进制数字的复杂序列输入到QPSK调制器。 二进制数字映射到星座点并与加权系数相乘。 将高阶调制的星座点映射到QPSK调制器的输入端，并且在调制QPSK符号相加以构成高阶调制的符号之后。

公开(公告)号：US07085246B1

公开(公告)日：2006-08-01

申请号：US09558121

申请日：2000-04-25

Applicant: Christopher Peter LaRosa ,  Brian David Storm ,  Michael John Carney ,  Christopher Becker ,  Tracie Ann Schirtzinger ,  Dave Steckl

Inventor： Christopher Peter LaRosa ,  Brian David Storm ,  Michael John Carney ,  Christopher Becker ,  Tracie Ann Schirtzinger ,  Dave Steckl

IPC: G08C7/00 ,  H04Q7/38

CPC classification number: H04B1/70752 ,  H04B1/70751 ,  H04B1/70753 ,  H04B1/70756 ,  H04B1/709 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70707 ,  H04B2201/70709

Abstract: An apparatus for acquiring a pseudo-random (PN) sequence timing for a code division multiple access (CDMA) radiotelephone. A buffer stores samples of representations of at least one pilot signal. A correlator coupled to the buffer is operable to correlate at least a portion of the samples with a PN sequence at each of a plurality of different PN offsets to produce corresponding correlation energies. A controller coupled to the correlator interrupts the correlator as soon as the PN sequence at a particular PN offset produces a correlation energy at least equal to an energy threshold.

Abstract translation: 一种用于获取码分多址（CDMA）无线电话机的伪随机（PN）序列定时的装置。 缓冲器存储至少一个导频信号的表示的采样。 耦合到缓冲器的相关器可操作以使至少一部分样本与多个不同PN偏移中的每一个处的PN序列相关联，以产生相应的相关能量。 一旦耦合到相关器的控制器一旦特定PN偏移处的PN序列产生至少等于能量阈值的相关能量，就中断相关器。