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    Shared communication bus arbitration system and method for arbitrating
    74.
    发明公开
    Shared communication bus arbitration system and method for arbitrating 失效
    用于分布式传输总线和仲裁的仲裁系统

    公开(公告)号：EP1174798A3

    公开(公告)日：2003-12-17

    申请号：EP01122637.0

    申请日：1997-06-27

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Regis, Robert T.

    IPC分类号： G06F13/376 ,  G06F13/374

    CPC分类号： H04B1/7075 ,  G06F13/374 ,  G06F13/376 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/708 ,  H04B2201/70702

    摘要： A parallel packetized intermodule arbitrated high speed control data bus system which allows high speed communications between microprocessor modules in a more complex digital processing environment. The system features a simplified hardware architecture featuring fast FIFO queuing operating at 12.5 MHz, TTL CMOS compatible level clocking signals, single bus master arbitration, synchronous clocking, DMA, and unique module addressing for multiprocessor systems. The system includes a parallel data bus with sharing bus masters residing on each processing module decreeing the communication and data transfer protocols. Bus arbitration is performed over a dedicated serial arbitration line and each requesting module competes for access to the parallel data bus by placing the address of the requesting module on the arbitration line and monitoring the arbitration line for collisions.

    METHOD AND APPARATUS FOR SEARCHING A GATED PILOT
    75.
    发明公开
    METHOD AND APPARATUS FOR SEARCHING A GATED PILOT 有权
    方法和装置LOOKING FOR组合先导信号

    公开(公告)号：EP1360775A1

    公开(公告)日：2003-11-12

    申请号：EP02702159.1

    申请日：2002-02-06

    申请人： QUALCOMM INCORPORATED

    发明人： GLAZKO, Serguei, A. ,  BLACK, Peter, J. ,  CHALLA, Raghu

    IPC分类号： H04B1/707 ,  H04J13/00 ,  H04B7/26

    CPC分类号： H04B1/70758 ,  H04B2201/70701

    摘要： Techniques to search for a gated pilot reference in a wireless communication system. In one method, an overall code space in which the pilot may be found is partitioned into a number of groups of code sets, with each code set representative of all possible chip offsets of a specific PN sequence. The groups are ordered based on the likelihood of detecting the pilot in each of the groups. The groups of code sets are then used to search for the pilot, one group at a time, starting with the group most likely to result in successful pilot acquisition and ending with the group least likely to result in successful pilot acquisition. The search is terminated upon successful acquisition. The pilot search may be performed using detect, dwell, and pull-in substages. The detect substage for one group may be performed in parallel with the pull-in substage for another group.

    Code division multiple access communication system
    76.
    发明公开
    Code division multiple access communication system 失效
    码分多址通信系统

    公开(公告)号：EP1343255A2

    公开(公告)日：2003-09-10

    申请号：EP03011222.1

    申请日：1998-03-10

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： The designation of the inventor has not yet been filed

    IPC分类号： H04B7/005

    CPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/708 ,  H04B1/7085 ,  H04B1/7093 ,  H04B1/7103 ,  H04B1/7115 ,  H04B1/712 ,  H04B1/7183 ,  H04B7/2637 ,  H04B7/264 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04J13/00 ,  H04J13/10 ,  H04J2013/0037 ,  H04L1/004 ,  H04L25/0212 ,  H04L27/206 ,  H04L27/2332 ,  H04L2027/003 ,  H04L2027/0053 ,  H04W24/08 ,  H04W28/22 ,  H04W36/06 ,  H04W52/0238 ,  H04W52/04 ,  H04W52/08 ,  H04W52/143 ,  H04W52/146 ,  H04W52/24 ,  H04W52/26 ,  H04W52/322 ,  H04W52/325 ,  H04W52/343 ,  H04W52/346 ,  H04W52/36 ,  H04W52/362 ,  H04W52/367 ,  H04W52/44 ,  H04W52/50 ,  H04W52/52 ,  H04W52/60 ,  H04W72/0466 ,  H04W88/021 ,  H04W88/08 ,  H04W88/181 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/21 ,  Y02D70/40 ,  Y02D70/449

    摘要： The present invention provides an automatic maintenance power control (MPC) system for a multiple access, spread-spectrum communication system which maintains an initial transmit power level of a subscriber unit, comprising a base station and a plurality of inactive subscriber units, wherein the base station transmits a plurality of forward inactive channel information signals to a plurality of subscriber units as a plurality of forward channel spread-spectrum signals, and each of the inactive subscriber units occasionally transmits to the base station at least one reverse spread-spectrum signal having a reverse transmit power level and including a reverse channel information signal; the base station comprising:

    a) a plurality of reverse signal measuring means, each reverse signal measuring means comprising: means for measuring a reverse signal-to-noise ratio of the respective reverse channel information signal; a plurality of reverse error generating means, each reverse error generating means for generating a respective reverse channel error signal representing a difference between the respective reverse channel signal-to-noise ratio and a respective pre-determined signal-tonoise ratio;
    b) system noise measuring means for measuring a system noise power level of the spread-spectrum system comprising: means for receiving a plurality of reverse spread-spectrum signals; means for combining the received spread spectrum signals with an uncorrelated despreading signal to produce a noise signal; and means for measuring a power level of the noise signal to produce a system noise power signal;
    c) means for multiplying the difference signal by the system noise power signal to generate the reverse channel error signal; and
    d) a plurality of transmitting means, each transmitting means for transmitting a respective reverse channel error signal as a part of a respective forward channel information signal; wherein each subscriber unit comprises an MPC receiving means for receiving a respective one of the forward channel information signals and for extracting the respective reverse error signal from the forward channel information signal, and a subscriber transmit power adjustment means for adjusting the reverse transmit power level of the respective reverse spread-spectrum signal responsive to the respective reverse error signal.

    摘要翻译： 本发明提供了一种用于多址扩频通信系统的自动维护功率控制（MPC）系统，该系统维持用户单元的初始发射功率电平，包括一个基站和多个非活动用户单元，其中基站 站将多个前向不活动信道信息信号作为多个前向信道扩频信号发送给多个用户单元，并且每个非活动用户单元偶尔向基站发送至少一个反向扩频信号，该反向扩频信号具有 反向发射功率电平并包括反向信道信息信号; 该基站包括：a）多个反向信号测量装置，每个反向信号测量装置包括：用于测量各个反向信道信息信号的反向信噪比的装置; 多个反向误差产生装置，每个反向误差产生装置用于产生表示相应反向信道信噪比和相应的预定信号噪声比之间的差的相应反向信道误差信号; b）用于测量扩频系统的系统噪声功率电平的系统噪声测量装置，包括：用于接收多个反向扩频信号的装置; 用于将所接收的扩频信号与不相关的解扩信号进行组合以产生噪声信号的装置; 以及用于测量所述噪声信号的功率电平以产生系统噪声功率信号的装置; c）将差信号乘以系统噪声功率信号以产生反向信道误差信号的装置; 和d）多个发射装置，每个发射装置用于发射各自的反向信道误差信号作为相应的前向信道信息信号的一部分; 其中每个用户单元包括一个MPC接收装置，用于接收相应的一个前向信道信息信号并从前向信道信息信号中提取相应的反向误差信号;以及一个用户发射功率调整装置，用于调整反向发射功率电平 相应的反向扩频信号响应于相应的反向误差信号。

    Efficient multichannel filtering for CDMA modems
    77.
    发明公开
    Efficient multichannel filtering for CDMA modems 失效
    Effiziente MehrkanalfilterungfürCDMA-Modems

    公开(公告)号：EP1337040A1

    公开(公告)日：2003-08-20

    申请号：EP03009778.6

    申请日：1997-06-24

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： Regis, Robert T.

    IPC分类号： H03H17/02 ,  H04B7/26

    CPC分类号： H04B1/7075 ,  H03H17/0226 ,  H03H17/06 ,  H04B1/707 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/708 ,  H04B1/7093 ,  H04B2201/70702 ,  H04B2201/70707

    摘要： The present invention provides an apparatus for processing code division multiple access (CDMA) signals comprising:

    a plurality of inputs, each input receiving a specific CDMA signal channel;
    first and second memories coupled to each of the inputs, each of the memories receiving the CDMA signal channels and performing a weighting function thereof;
    a first storage of register coupled to the first memory, the first storage register storing multibit values received from the first memory;
    a first summer coupled to the first storage register and the second memory, the first summer combining output signals received from the first storage register and the second memory; and
    a second storage register coupled to the first summer, wherein the second storage register stores and outputs filtered signals derived from the signal channels.

    摘要翻译： 本发明提供了一种用于处理码分多址（CDMA）信号的装置，包括：多个输入，每个输入接收特定的CDMA信号信道; 第一和第二存储器耦合到每个输入，每个存储器接收CDMA信号信道并执行其加权函数; 第一存储器，其耦合到所述第一存储器，所述第一存储寄存器存储从所述第一存储器接收的多位值; 第一加法器，耦合到第一存储寄存器和第二存储器，第一加法器，组合从第一存储寄存器和第二存储器接收的输出信号; 以及耦合到所述第一加法器的第二存储寄存器，其中所述第二存储寄存器存储并输出从所述信号通道导出的滤波信号。

    SEARCHING FOR SIGNALS IN A COMMUNICATIONS SYSTEM
    78.
    发明公开
    SEARCHING FOR SIGNALS IN A COMMUNICATIONS SYSTEM 有权
    信号搜索中的通信系统

    公开(公告)号：EP1323242A2

    公开(公告)日：2003-07-02

    申请号：EP01986378.6

    申请日：2001-09-25

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： CARLSSON, Torsten ,  GUSTAFSSON, Kjell ,  ATARIUS, Roozbeh ,  ERIKSSON, Haakan ,  ÖSTBERG, Christer ,  PALENIUS, Torgny

    IPC分类号： H04B1/707

    CPC分类号： H04B1/70758 ,  H04B1/70757 ,  H04B1/712

    摘要： A method and system enable matched filters of a CDMA system to be simplified using a two stage search. A course stage and a fine stage jointly produce the locations(s) of received signal path-rays. In a first stage, an oversampled digital signal (240) is decimated, and the decimated signal (415) is applied to a matched filter (420) to eventually produce an approximate location (460). In a second stage, the oversampled signal (240) is shifted based on the determined approximate location (460) and then correlated to a generated code (440), and a more-exact location is selected from the outputs of the correlations (450). Alternatively, a shifted version of the generated code (440) is correlated to the oversampled signal (240), and the more-exact location is selected from the outputs of those correlations (450).