公开(公告)号：US20110170493A1

公开(公告)日：2011-07-14

申请号：US13073594

申请日：2011-03-28

申请人： James A. Proctor, JR. ,  Antoine J. Rouphael ,  John E. Hoffmann ,  George R. Nelson, JR.

发明人： James A. Proctor, JR. ,  Antoine J. Rouphael ,  John E. Hoffmann ,  George R. Nelson, JR.

IPC分类号： H04W40/00

CPC分类号： H04W56/001 ,  H04B1/7075 ,  H04B1/70775 ,  H04B1/7103 ,  H04B7/086 ,  H04B2201/70701 ,  H04L27/2273 ,  H04L2027/0057 ,  H04L2027/0087

摘要： A method for synchronizing a CDMA receiver to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360° reception angle pattern (i.e., an omni-directional pattern) and a fixed reception angle (i.e., a directional pattern) by permitting the receiver to identify a pilot signal having the largest magnitude. The receiver minimizes interference from other pilot signals by steering antenna pattern nulls toward other transmitters. As a result, the time required for the receiver to acquire a valid pilot signal is significantly reduced.

摘要翻译： 一种当使用自适应天线来接收发射数据时将CDMA接收机同步到发射机的方法，其中接收天线系统适应于360°接收角度模式（即，全向模式）和固定接收角度 即，方向图），通过允许接收机识别具有最大幅度的导频信号。 接收器通过向其他发射机转向天线图形零点来最小化来自其他导频信号的干扰。 结果，接收机获取有效导频信号所需的时间显着减少。

公开(公告)号：US07978751B2

公开(公告)日：2011-07-12

申请号：US12052042

申请日：2008-03-20

申请人： Karsten Brueninghaus ,  Oliver Klein ,  Jaroslaw Niewczas

发明人： Karsten Brueninghaus ,  Oliver Klein ,  Jaroslaw Niewczas

IPC分类号： H04B1/06 ,  H03K9/00

CPC分类号： H04B1/7077 ,  H04B1/70775

摘要： The present invention provides a method and apparatus for adapting a current path delay estimate for path delay tracking. In order to determine the path delay an operating mode is selected and a set of hypothesized path delays are determined based on said operating mode. A metric for each hypothesized path delay is determined, and a current path delay estimate is adapted based on the computed metrics for the hypothesized path delays.

摘要翻译： 本发明提供一种用于调整路径延迟跟踪的电流路径延迟估计的方法和装置。 为了确定路径延迟，选择操作模式，并且基于所述操作模式确定一组假设的路径延迟。 确定每个假设的路径延迟的度量，并且基于所计算的假设路径延迟的度量来适配当前路径延迟估计。

公开(公告)号：US07903600B2

公开(公告)日：2011-03-08

申请号：US11773772

申请日：2007-07-05

申请人： Hsin-chung Yeh ,  Zong-hua You

发明人： Hsin-chung Yeh ,  Zong-hua You

IPC分类号： H04B7/216

CPC分类号： H04B1/7085 ,  G01S19/29 ,  H04B1/70775

摘要： A method for controlling integration for a CDMA signal and a receiver implementing the same. In accordance with the present invention, non-coherent and even coherent integration periods for a received signal are dynamically and adaptively controlled depending upon the condition of the received signal. The integration period can be very short when signal strength is strong and no blocking exists; while it can be extended to be longer when the signal strength is weak or there is a blocking. Therefore, it is possible to keep locking even under bad circumstances. In addition, the fix time can be shortened when the signal strength is very strong.

摘要翻译： 一种用于控制CDMA信号的集成的方法和实现该信号的接收机。 根据本发明，接收信号的非相干和均匀一致的积分周期根据接收到的信号的状况被动态和自适应地控制。 当信号强度强且不存在阻塞时，积分周期可能很短; 而当信号强度较弱或存在阻塞时，它可以扩展到更长的时间。 因此，即使在恶劣的环境下也可以保持锁定。 此外，当信号强度非常强时，可以缩短固定时间。

公开(公告)号：US07852971B2

公开(公告)日：2010-12-14

申请号：US11491210

申请日：2006-07-21

申请人： Christopher C. Riddle ,  Tien-Chien Chen

发明人： Christopher C. Riddle ,  Tien-Chien Chen

IPC分类号： H04L27/00

CPC分类号： H04B1/7075 ,  H04B1/70775 ,  H04B1/7117 ,  H04B2001/70706 ,  H04L27/0014

摘要： Techniques for detecting acquisition of a false channel in a wireless communication system are described. For false channel detection, a peak corresponding to a signal from a base station is initially detected. Frequency acquisition and time tracking of the peak are then performed. The frequency acquisition attempts to determine and correct downconversion frequency error. The time tracking attempts to follow the peak as it moves due to sample timing error and/or changes in channel conditions. Whether the signal is from a desired frequency channel or a false frequency channel is determined based on the time tracking. If a false channel is acquired, then the sampling timing will be either too slow or too fast, and the peak will move at a fast rate. A false channel may be detected based on the movement of the peak.

摘要翻译： 描述用于检测无线通信系统中的虚信道的获取的技术。 对于伪信道检测，初始检测到对应于来自基站的信号的峰值。 然后进行峰值的频率采集和时间跟踪。 频率采集尝试确定和修正下变频频率误差。 由于采样定时误差和/或信道条件的变化，时间跟踪尝试跟随峰值。 基于时间跟踪确定信号是来自期望的频道还是假频道。 如果获取了虚假通道，则采样时间将太慢或太快，并且峰值将以快速速率移动。 可以基于峰值的移动来检测虚信道。

公开(公告)号：US07426392B2

公开(公告)日：2008-09-16

申请号：US10154948

申请日：2002-05-23

申请人： Tsofnat Hagin-Metzer ,  David Ben-Eli

发明人： Tsofnat Hagin-Metzer ,  David Ben-Eli

IPC分类号： H04Q7/20

CPC分类号： H04B1/70755 ,  H04B1/70775

摘要： A search receiver within a wireless communicator uses an adaptive path detection threshold. By using a continually updated path detection threshold, a communicator may be adapted to the energy of a base station. A search receiver continually updates the path detection threshold to reduce a false alarm rate and enhance the accuracy of the search detector.

摘要翻译： 无线通信器内的搜索接收机使用自适应路径检测阈值。 通过使用不断更新的路径检测阈值，通信器可以适应于基站的能量。 搜索接收机不断地更新路径检测阈值以减少误报率并提高搜索检测器的准确性。

公开(公告)号：US20070223566A1

公开(公告)日：2007-09-27

申请号：US11754984

申请日：2007-05-29

申请人： Robbin Hughes ,  De-Gang Yao ,  Serguei Glazko

发明人： Robbin Hughes ,  De-Gang Yao ,  Serguei Glazko

IPC分类号： H04B1/00

CPC分类号： H04B1/70775 ,  H04B1/70751 ,  H04B1/70754 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702

摘要： In a remote unit of a wireless communication system, the speed of acquisition, or reacquisition, of a pilot signal by a search engine is increased. PN space is divided into segments and a coarse search of each segment is performed using a set of “fast” search parameters. A set of peak signal strengths, along with their corresponding PN offsets, is saved for each segment of PN space. Following the search of all segments of PN space, the peak signal strengths which were saved during the coarse acquisition are evaluated. Coarse acquisition search results are used by the remote unit to determine fine search window parameters for subsequent searches performed by the remote unit search engine. The fine search parameters concentrate searching efforts on portions of PN space most likely to contain a viable base station pilot signal.

摘要翻译： 在无线通信系统的远程单元中，增加了搜索引擎的导频信号的获取或重新获取的速度。 PN空间被划分成段，并且使用一组“快速”搜索参数来执行每个段的粗略搜索。 为PN空间的每个段节省一组峰值信号强度及其相应的PN偏移。 在搜索PN空间的所有段之后，评估在粗略采集期间保存的峰值信号强度。 远程单元使用粗略采集搜索结果来确定由远程单元搜索引擎执行的后续搜索的精细搜索窗口参数。 精细搜索参数将搜索努力集中在最有可能包含可行基站导频信号的PN空间部分上。

公开(公告)号：US20070177657A1

公开(公告)日：2007-08-02

申请号：US11596430

申请日：2005-05-11

申请人： Francesc Espax

发明人： Francesc Espax

IPC分类号： H04B1/00

CPC分类号： H04B1/7113 ,  H04B1/70754 ,  H04B1/70775 ,  H04B1/7117

摘要： A method of updating a multipath search that has located one or more multipath component peaks in a received signal, the method comprising repeating the search using a delay spread window extending either back from the latest peak or forward from the earliest peak.

摘要翻译： 一种更新已经在接收信号中定位了一个或多个多路径分量峰值的多路径搜索的方法，所述方法包括使用从最早的峰值向前延伸的延迟扩展窗口或从最早的峰值向前延伸来重复搜索。

公开(公告)号：US07224719B1

公开(公告)日：2007-05-29

申请号：US09540128

申请日：2000-03-31

申请人： Robbin Hughes ,  De-Gang Yao ,  Serguei A. Glazko

发明人： Robbin Hughes ,  De-Gang Yao ,  Serguei A. Glazko

IPC分类号： H04B1/00

CPC分类号： H04B1/70775 ,  H04B1/70751 ,  H04B1/70754 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702

摘要： In a remote unit of a wireless communication system, the speed of acquisition, or reacquisition, of a pilot signal by a search engine is increased. PN space is divided into segments and a coarse search of each segment is performed using a set of “fast” search parameters. A set of peak signal strengths along with their corresponding PN offsets, is saved for each segment of PN space. Following the search of all segments of PN space, the peak signal strengths which were saved during the coarse acquisition are evaluated. Coarse acquisition search results are used by the remote unit to determine fine search window parameters for subsequent searches performed by the remote unit search engine. The fine search parameters concentrate searching efforts on portions of PN space most likely to contain a viable base station pilot signal.

摘要翻译： 在无线通信系统的远程单元中，搜索引擎的导频信号的获取或重新获取的速度增加。 PN空间被划分成段，并且使用一组“快速”搜索参数来执行每个段的粗略搜索。 为PN空间的每个段节省一组峰值信号强度及其对应的PN偏移。 在搜索PN空间的所有段之后，评估在粗略采集期间保存的峰值信号强度。 远程单元使用粗略采集搜索结果来确定由远程单元搜索引擎执行的后续搜索的精细搜索窗口参数。 精细搜索参数将搜索努力集中在最有可能包含可行基站导频信号的PN空间部分上。

公开(公告)号：US07197064B2

公开(公告)日：2007-03-27

申请号：US11259836

申请日：2005-10-27

申请人： Peter Van Wyck Loomis ,  Yiming Yu

发明人： Peter Van Wyck Loomis ,  Yiming Yu

IPC分类号： H04B1/69 ,  H04B1/713

CPC分类号： H04B1/70775 ,  G01S19/24 ,  G01S19/30 ,  H04B2201/70715

摘要： A GPS receiver and method using alternating “A” and “B” integration time segments. The polarities of certain GPS data bits are known beforehand and their expected reception times are known. The GPS signal in 10 millisecond “A” time segments and “B” time segments is depolarized according to the known polarities. The depolarized GPS signal during an “A” time period made up of all the “A” time segments is integrated for providing an “A” time period magnitude for each code phase. Likewise, the depolarized GPS signal during a “B” time period made up of all the “B” time segments is integrated for providing a “B” time period magnitude for each potential GPS code phase. The strongest of the time period magnitudes is compared to a correlation threshold for selecting a code phase for signal acquisition.

摘要翻译： GPS接收机和使用交替“A”和“B”积分时间段的方法。 某些GPS数据位的极性预先已知，其预期的接收时间是已知的。 10毫秒“A”时间段和“B”时间段中的GPS信号根据已知的极性被去极化。 在由所有“A”时段组成的“A”时段期间的去极化GPS信号被积分，以为每个码相提供“A”时间周期大小。 同样地，在由所有“B”时间段组成的“B”时间段期间的去极化GPS信号被积分，以为每个潜在的GPS码相位提供“B”时间周期大小。 将最强的时间段幅度与用于选择用于信号采集的码相位的相关阈值进行比较。

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。