公开(公告)号：WO0243264A3

公开(公告)日：2002-10-10

申请号：PCT/EP0113726

申请日：2001-11-26

Applicant: ERICSSON TELEFON AB L M ,  CAVANDER HANS ,  LENNARTSSON LARS

Inventor： CAVANDER HANS ,  LENNARTSSON LARS

IPC: H04B1/707 ,  H04B1/7075 ,  H04B1/7093

CPC classification number: H04B1/70758 ,  H04B1/7093

Abstract: The present invention relates to a spread spectrum communications system, in which a mobile station includes a matched filter which can be divided into segments. On initial acquisition, when a frequency deviation between the expected receiving frequency of the mobile station and the transmitting frequency of the base station is expected to be relatively large, the device can operate in a first synchronisation mode, in which the filter is used divided into segments. On searching for alternative cells, when the frequency deviation is expected to be smaller, the device can operate in a second synchronisation mode, in which the filter is used undivided. Thus, in the first mode, a reduced filter length avoids the difficulties cause by frequency deviation, while, in the second mode, an increased filter length allows faster acquisition.

Abstract translation: 扩展频谱通信系统技术领域本发明涉及一种扩频通信系统，其中移动站包括可分为段的匹配滤波器。 在初始获取时，当预期移动台的预期接收频率与基站的发射频率之间的频率偏差预期相对较大时，该设备可以以第一同步模式工作，其中滤波器被分为 段。 在寻找替代单元时，当预期频率偏差较小时，器件可以在第二同步模式下工作，其中滤波器被不分割地使用。 因此，在第一模式中，减小的滤波器长度避免了频率偏差引起的困难，而在第二模式中，增加的滤波器长度允许更快的采集。

公开(公告)号：WO02015418A3

公开(公告)日：2002-07-11

申请号：PCT/EP2001/009441

申请日：2001-08-15

IPC: H04B1/7075 ,  H04B1/7097 ,  H04B17/00 ,  H04B1/707 ,  H04Q7/32

CPC classification number: H04B1/7075 ,  H04B1/0003 ,  H04B1/7097

Abstract: For use in a digital signal processing system, a filter implementation factors in the time difference between consecutive searches for the same signal and modifies the filter depending on the time-arrival differences of consecutive search results. An example application to which the invention is particularly well adapted is in a mobile receiver for a cellular radiotelephone communications system. In accordance with the present invention, after determining a relative arrival time of data sample sets in the stream of data samples, the mobile station includes a receiver arrangement configured to filter a stream of data samples arriving at irregular intervals, to provide a relative arrival time of data sample sets in the stream of data samples, and in response to determining the relative arrival time, to filter the data sample sets using value assignments that are exponentially weighted for the data sample sets. The data sample sets are weighted more than data sample sets arriving early. In a more specific implementation, the receiver arrangement searches the data sample sets for a signal strength signal, and filters the data sample sets based on time-arrival differences of consecutive search results.

Abstract translation: 本发明涉及一种数字信号处理系统中使用的滤波方法，包括将相同信号的连续搜索之间的时间差分成因子，并根据信号到达时间的差异修改滤波。 连续研究的结果。 具体地说，本发明涉及用于蜂窝无线电话通信系统的移动接收机。 根据本发明，当数据采样流的数据采样组的相对到达时间已经被确定时，移动台使用被配置为过滤输入数据采样流的接收设备。 以不规则的间隔，以便产生数据采样流的数据采样集合的相对到达时间，并且响应于相对到达时间的确定，过滤所述数据采样集合， 数据采样通过为数据采样集分配指数加权值。 这些数据样本集比先前到达的数据样本集更加加权。 在更具体的实施例中，接收设备搜索信号强度指示符的数据样本集合，并基于结果的到达时间差异过滤数据样本集合。 连续搜索。

公开(公告)号：WO0176089A3

公开(公告)日：2002-06-20

申请号：PCT/US0140426

申请日：2001-04-02

Applicant: QUALCOMM INC

Inventor： NEUFELD ARTHUR

IPC: H04B7/26 ,  H04B1/7075 ,  H04B1/7115 ,  H04B1/707

CPC classification number: H04B1/70756 ,  H04B1/7115

Abstract: A method and apparatus whereby a remote unit (10A, 10B and 10C) in a slotted mode wireless communication system may calculate accurate time throughout its entire active state. In the remote unit (10A, 10B and 10C) a "wall clock time" is calculated from a modulo 80 counter called a combiner time counter (224). When a remote unit (10A, 10B and 10C) enters its inactive state, counters within the remote unit (10A, 10B and 10C), including the combined time counter, are deactivated. When the remote unit (10A, 10B and 10C) reenters its active state, the value in the combiner time counter (224) may not be correct in relationship to slotted mode time. A controller (106) in the remote unit (10A, 10B and 10C) forces the combiner time counted to the correct phase resulting in the combiner (224) being within 26.66 of the correct value. The controller (106) then determines a combiner offset to compensate for any remaining error in the combiner time counter (224). The control (106) may then use the combiner time counter (224) and the combiner offset to calculate accurate wall clock time. When convenient, such as at a slot boundary, the remote unit (10A, 10B and 10C) may reset the combiner counter (224) to a correct value, and set combiner offset to zero.

Abstract translation: 一种开槽模式无线通信系统中的远程单元（10A，10B和10C）可以在整个活动状态下计算精确时间的方法和装置。 在远程单元（10A，10B和10C）中，从称为组合器时间计数器（224）的模80计数器计算出“挂钟时间”。 当远程单元（10A，10B和10C）进入其非活动状态时，远程单元（10A，10B和10C）中包括组合时间计数器的计数器被禁用。 当远程单元（10A，10B和10C）重新进入其活动状态时，组合器时间计数器（224）中的值可能与时隙模式时间无关。 远程单元（10A，10B和10C）中的控制器（106）迫使组合器时间被计数到正确的相位，导致组合器（224）在正确值的26.66内。 控制器（106）然后确定组合器偏移量以补偿组合器时间计数器（224）中的任何剩余误差。 然后，控制（106）可以使用组合器时间计数器（224）和组合器偏移来计算精确的挂钟时间。 如方便的，例如在时隙边界，远程单元（10A，10B和10C）可以将组合器计数器（224）复位到正确的值，并将组合器偏移量设置为零。

公开(公告)号：WO01076088A3

公开(公告)日：2002-05-16

申请号：PCT/US2001/010464

申请日：2001-03-30

IPC: H04B1/7075 ,  H04B1/7115 ,  H04Q7/38 ,  H04B1/707

CPC classification number: H04B1/70754 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: A method and apparatus of adjusting a search window size by a remote unit in a slotted mode wireless communication system. In a slotted mode communication system, the remote unit is in an "active state" during its assigned slot. While in the active state the controller in a remote unit passes selected sets of search parameters to a search engine. The search engine performs searches on base stations using the selected sets of search parameters (230). One search parameter, the search window size, is adjusted in response to a measured signal strength of a first base station signal (260). The adjusted search window size is used by the remote unit when searching other base stations (270).

Abstract translation: 一种在时隙模式无线通信系统中由远程单元调整搜索窗口大小的方法和装置。 在时隙模式通信系统中，远程单元在其分配的时隙期间处于“活动状态”。 当处于活动状态时，远程单元中的控制器将所选择的一组搜索参数传递给搜索引擎。 搜索引擎使用所选择的搜索参数集（230）对基站执行搜索。 响应于第一基站信号的测量信号强度来调整搜索窗口大小的一个搜索参数（260）。 搜索其他基站时，由遥控单元使用调整后的搜索窗口大小（270）。

公开(公告)号：WO0197400A3

公开(公告)日：2002-03-28

申请号：PCT/US0119403

申请日：2001-06-14

Applicant: QUALCOMM INC

Inventor： ROWITCH DOUGLAS NEAL ,  LEE WAY-SHING ,  EKVETCHAVIT THUNYACHATE

IPC: H04B1/7075 ,  H04B1/708 ,  H04B1/709 ,  H04B7/06 ,  H04J13/00 ,  H04B1/707

CPC classification number: H04B1/70751 ,  H04B1/70752 ,  H04B1/708 ,  H04B1/709 ,  H04B7/0613 ,  H04J13/004

Abstract: Demodulator architectures for processing a received signal in a wireless communications system. The demodulator includes a number of correlators coupled to a combiner. Each correlator typically receives and despreads input samples (which are generated from the received signal) with a respective despreading sequence to provide despread samples. Each correlator then decovers the despread samples to provide decovered "half-symbols" and further demodulates the decovered half-symbols with pilot estimates to generate correlated symbols. The decovering is performed with a Walsh symbol having a length (T) that is half the lenght (2T) of a Walsh symbol used to cover the data symbols in the transmitted signal. The combiner selectively combines correlated symbols from the assigned correlators to provide demodualted symbols. One or more correlators can be assigned to process one or more instances of each transmiteed signal. The pilot estimates used within each assigned correlator to demodulate the decovered half-symbols are generated based on the signal instance being prcessed by that correlator.

Abstract translation: 用于在无线通信系统中处理接收到的信号的解调器架构。 解调器包括耦合到组合器的多个相关器。 每个相关器通常以相应的解扩序列接收和解扩输入采样（其从接收信号产生），以提供解扩样本。 每个相关器然后解码解扩样本以提供去除的“半符号”，并且用导频估计进一步解调已解除的半符号以产生相关符号。 使用具有用于覆盖所发送的信号中的数据符号的沃尔什符号的长度（2T）的一半的长度（T）的沃尔什符号执行解复用。 组合器选择性地组合来自所分配的相关器的相关符号以提供解调符号。 可以分配一个或多个相关器来处理每个透过信号的一个或多个实例。 在每个分配的相关器内使用的导频估计是基于被该相关器加权的信号实例来生成的。

公开(公告)号：WO02016960A1

公开(公告)日：2002-02-28

申请号：PCT/US2001/023078

申请日：2001-07-20

IPC: G01S19/09 ,  G01S1/00 ,  G01S5/00 ,  G01S19/21 ,  G01S19/25 ,  G01S19/26 ,  G01S19/30 ,  G01S19/37 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7097 ,  H04Q7/38 ,  G01S1/04 ,  G01S5/14

CPC classification number: G01S19/37 ,  G01S5/0027 ,  G01S5/0036 ,  G01S19/09 ,  G01S19/21 ,  G01S19/25 ,  G01S19/26 ,  G01S19/30 ,  H04B1/7075 ,  H04B1/70755 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/709 ,  H04B1/7097 ,  H04B2201/70715

Abstract: The present invention discloses methods, apparatuses, and systems for eliminating auto- and cross-correlation in weak signal CDMA systems, such as GPS systems. The invention uses parallel data paths that allow standard correlation of signals in parallel with verification of the lock signal to determine whether the system has locked onto the proper signal within the scanned signal window. The invention can be made with multiple CPUs, a single CPU with dual input modes, on multiple IC chips, or as a single IC chip solution for small, low cost reception, downconversion, correlation, and verification systems.

Abstract translation: 本发明提供用于抑制影响诸如GPS的低信号CDMA系统的自发或互相关的方法，设备和系统。 在这种情况下，使用并行数据路径，其允许信号的标准相关与验证锁定信号并行以确保系统已经在其自身信号的范围内锁定 分析的信号窗口。 用于本发明的设备可以以多个CPU，具有双输入模式的单CPU，集成电路微电路或以单个集成电路芯片的解决方案的形式实现，用于 到小型系统，能够实现低成本接收，降低频率，相关性和验证。

公开(公告)号：WO0147140A3

公开(公告)日：2002-02-14

申请号：PCT/DE0004522

申请日：2000-12-18

Applicant: INFINEON TECHNOLOGIES AG ,  BECKER BURKHARD ,  JUNG PETER ,  PLECHINGER JOERG ,  SCHNEIDER MICHAEL ,  DOETSCH MARKUS ,  KELLA TIDEYA ,  SCHMIDT PETER

Inventor： BECKER BURKHARD ,  JUNG PETER ,  PLECHINGER JOERG ,  SCHNEIDER MICHAEL ,  DOETSCH MARKUS ,  KELLA TIDEYA ,  SCHMIDT PETER

IPC: H04B1/7075 ,  H04B7/26 ,  H04J3/06 ,  H04L7/00 ,  H04L7/08 ,  H04W56/00

CPC classification number: H04L7/042 ,  H04B1/7075 ,  H04W56/0085

Abstract: The invention relates to a method for synchronising a mobile radio receiver with a radio signal time-slot structure. According to said method, a first partial section (A1) of a received time-slot synchronisation code sequence, said section having been detected during a first time-slot period (T1) and a second partial section (A3) of a received time-slot synchronisation code sequence, said section having been detected during a second time-slot period (T2) are correlated with the known time-slot synchronisation code sequence which has been transmitted from the base station. The temporal position of the time-slots is determined from the two sets of correlation results which have been received.

Abstract translation: 在用于在接收器中的第一时隙期间（T1）同步用的无线电信号的时隙结构的移动无线电接收器的方法被检测到的第一部分（A1），并在稍后的时隙周期（T2）来检测一个接收的时隙同步码序列的第二部分（A3） 与从所述基站，称为时隙同步码序列发射的光相关联。 时隙的定时被从两个得到的相关结果来确定。

公开(公告)号：WO0154432A3

公开(公告)日：2002-01-10

申请号：PCT/US0100939

申请日：2001-01-12

Applicant: QUALCOMM INC

Inventor： ABRISHAMKAR FARROKH ,  ROH MARK

IPC: H04B1/7075 ,  H04B1/7077 ,  H04B7/26 ,  H04W68/00 ,  H04B1/707

CPC classification number: H04W68/00 ,  H04B1/70751 ,  H04B1/7077 ,  H04B2201/70702 ,  H04B2201/70707 ,  Y02D70/00 ,  Y02D70/40

Abstract: A system for facilitating the detection and successful decoding of a quick paging channel adapted for use with a wireless communications system (10) supporting a primary paging channel and a quick paging channel. The system includes a first mechanism (46, 48, 50) for detecting a pilot signal associated with the quick paging channel based on a received signal and includes a coherent integrator (104, 106) of a first length (N) and a noncoherent integrator (114) of a second length (M). The second mechanism determines receiver operating characteristics of the system based on the pilot signal and a quick paging channel signal associated with the quick paging channel. The third mechanism optimizes the first length and the second length based on the receiver operating characteristics.

Abstract translation: 一种便于对支持主寻呼信道和快速寻呼信道的无线通信系统（10）使用的快速寻呼信道的检测和成功解码的系统。 该系统包括用于基于接收到的信号检测与快速寻呼信道相关联的导频信号的第一机制（46,48,50），并且包括第一长度（N）和非相干积分器的相干积分器（104,106） （114）的第二长度（M）。 第二机制基于导频信号和与快速寻呼信道相关联的快速寻呼信道确定系统的接收机操作特性。 第三机构基于接收器的操作特性来优化第一长度和第二长度。

公开(公告)号：WO01076087A1

公开(公告)日：2001-10-11

申请号：PCT/US2001/010160

申请日：2001-03-29

IPC: H04B1/7075 ,  H04B1/7077 ,  H04B1/7115 ,  H04Q7/34 ,  H04B1/707

CPC classification number: H04B1/70775 ,  H04B1/70751 ,  H04B1/70754 ,  H04B1/7115 ,  H04B2201/70701 ,  H04B2201/70702

Abstract: In a remote unit (39) of a wireless communication system, the speed of acquisition, or reacquisition, of a pilot signal by a search engine (47) 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 to memory (49) 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 by a controller (50). Coarse acquisition search results are used by the remote unit (39) to determine fine search window parameters for subsequent searches performed by the remote unit (39) search engine (44). The fine search parameters concentrate searching efforts of the remote unit (39) search engine (44) on portions of PN space most likely to contain a viable base station pilot signal.

Abstract translation: 在无线通信系统的远程单元（39）中，由搜索引擎（47）提供导频信号的获取速度或重新获取速度。 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。 一组峰值信号强度及其对应的PN偏移量被保存到PN空间的每个段的存储器（49）中。 在搜索PN空间的所有段之后，通过控制器（50）评估在粗略采集期间保存的峰值信号强度。 远程单元（39）使用粗略采集搜索结果来确定由远程单元（39）搜索引擎（44）执行的随后搜索的精细搜索窗口参数。 精细搜索参数将远程单元（39）搜索引擎（44）的搜索努力集中在最可能包含可行的基站导频信号的PN空间的部分上。

公开(公告)号：WO01063813A1

公开(公告)日：2001-08-30

申请号：PCT/US2001/040163

申请日：2001-02-23

IPC: H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7103 ,  H04B7/08 ,  H04L27/00 ,  H04L27/227 ,  H04J13/00

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

Abstract: A method for synchronizing a CDMA receiver (201) to a transmitter when an adaptive antenna is utilized to receive transmitted data, wherein a receiving antenna system is adapted between a 360 DEG 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 (201) to acquire a valid pilot signal is significantly reduced.

Abstract translation: 一种当使用自适应天线来接收发射数据时将CDMA接收机（201）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（即定向模式），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（201）获取有效导频信号所需的时间显着减少。