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    Interference cancellation in a spread spectrum communication system
    11.
    发明申请
    Interference cancellation in a spread spectrum communication system 有权
    扩频通信系统中的干扰消除

    公开(公告)号：US20030198284A1

    公开(公告)日：2003-10-23

    申请号：US10423230

    申请日：2003-04-25

    Applicant: InterDigital Technology Corporation A Delaware Corporation

    Inventor： David K. Mesecher ,  Alexander Reznik ,  Donald Grieco ,  Gary Cheung

    IPC: H04B001/707

    CPC classification number: H04B1/7103 ,  H04B1/7097 ,  H04B1/712 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0678 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0857 ,  H04B7/0891 ,  H04B2201/70701 ,  H04J13/0003

    Abstract: A code division multiple access communication system transmits a pilot and traffic signal over a shared spectrum. The pilot and traffic signal have an associated code. Signals are received over the shared spectrum. The received signals are sampled. The samples are delayed to produce a window. The window has evenly time spaced samples. Each window sample is despread with a pilot code. A weight for each despread pilot code window sample is determined using an adaptive algorithm. Each window sample is despread with a traffic code. Each despread traffic code window sample is weighted with a corresponding weight of the determined weights. The despread traffic code window sample are combined as data of the traffic signal.

    Abstract translation: 码分多址通信系统通过共享频谱发送导频和业务信号。 飞行员和交通信号灯具有相关代码。 通过共享频谱接收信号。 接收到的信号被采样。 样品被延迟产生窗口。 窗口具有均匀的时间间隔样本。 每个窗口样本用导频代码解扩。 使用自适应算法确定每个解扩导频码窗口采样的权重。 每个窗口样本都使用流量代码进行解扩。 每个去扩展的交通码窗口样本用确定的权重的相应权重进行加权。 解扩的业务码窗口样本被合并为业务信号的数据。

    Multiuser detector for variable spreading factors
    12.
    发明申请
    Multiuser detector for variable spreading factors 失效
    用于可变扩散因子的多用户检测器

    公开(公告)号：US20030021249A1

    公开(公告)日：2003-01-30

    申请号：US10174121

    申请日：2002-06-18

    Applicant: InterDigital Technology Corporation

    Inventor： Younglok Kim ,  Jung-Lin Pan ,  Ariela Zeira ,  Alexander Reznik

    IPC: H04B007/216

    CPC classification number: H04B1/71052 ,  H04B1/7105 ,  H04B2201/70703 ,  H04B2201/70705

    Abstract: A plurality of communication signals have differing spreading codes. Each communication has an associated code comprising chips. For each chip of each communication, a vector of that chip convolved with an impulse response is produced. For each communication, support blocks comprising the chip vectors are produced. A number of the chip vectors in a support block is based on that communication's spreading factor. A system response matrix is assembled. The system response matrix has symbol sub-matrices. Each symbol sub-matrix comprises a support block from each communication. Data of the communications is detected using the symbol response matrix.

    Abstract translation: 多个通信信号具有不同的扩展码。 每个通信具有包括芯片的相关代码。 对于每个通信的每个芯片，产生与脉冲响应卷积的该芯片的矢量。 对于每个通信，产生包括芯片向量的支持块。 支持块中的多个码片向量基于该通信的扩频因子。 组合系统响应矩阵。 系统响应矩阵具有符号子矩阵。 每个符号子矩阵包括来自每个通信的支持块。 使用符号响应矩阵检测通信的数据。

    Wireless communication method and system for assigning multi-paths to rake receiver fingers
    14.
    发明申请
    Wireless communication method and system for assigning multi-paths to rake receiver fingers 有权
    用于分配多路径到无线接收器手指的无线通信方法和系统

    公开(公告)号：US20040240532A1

    公开(公告)日：2004-12-02

    申请号：US10798707

    申请日：2004-03-11

    Applicant: InterDigital Technology Corporation

    Inventor： Alexander Reznik ,  Yogendra Shah

    IPC: H04B001/707

    CPC classification number: H04B1/7117

    Abstract: A wireless communication method and system for assigning multi-paths to Rake receiver fingers. A Rake finger assignment database is established in which multi-path signals are categorized into a verified group and an unverified group. Each multi-path is assigned to an individual bin in the database. Each bin includes a pilot phase data field, an antenna data field, a code data field, an averaged signal strength data field, an assigned flag data field, a verification flag data field, an update flag data field, an assigned Rake finger number data field and an assignment time counter data field. The multi-path signals in the verified group are further categorized into an assigned subgroup and an unassigned subgroup. During a measurement interval, each of a plurality of newly measured multi-path signals is compared to the multi-path signals in the database and is processed accordingly.

    Abstract translation: 一种用于向Rake接收机手指分配多路径的无线通信方法和系统。 建立耙指指配数据库，其中多路径信号被分类为经验证的组和未验证的组。 每个多路径分配给数据库中的一个单独的bin。 每个箱包括导频相位数据字段，天线数据字段，码数据字段，平均信号强度数据字段，分配的标志数据字段，验证标志数据字段，更新标志数据字段，分配的Rake指数数据 字段和分配时间计数器数据字段。 被验证组中的多路径信号进一步分类为分配的子组和未分配的子组。 在测量间隔期间，将多个新测量的多路径信号中的每一个与数据库中的多路径信号进行比较，并相应地进行处理。

    Multiuser detection of differing data rate signals
    20.
    发明申请
    Multiuser detection of differing data rate signals 失效
    多用户检测不同的数据速率信号

    公开(公告)号：US20040202151A1

    公开(公告)日：2004-10-14

    申请号：US10731456

    申请日：2003-12-09

    Applicant: InterDigital Technology Corporation

    Inventor： Alexander Reznik ,  Ariela Zeira

    IPC: H04L012/66

    CPC classification number: H04B1/7103 ,  H04B1/71055 ,  H04B2001/71077 ,  H04B2201/70705

    Abstract: A first detector receives a received signal and extracts the data signals from the received signal. A hard decision converter converts soft symbols outputted by the first detector into hard symbols. An interference canceller extracts the voice signals from the received signal. A second detector is connected to the output of the interference canceller, and extracts the individual voice signals. The second detector is a different detector type than the first detector.

    Abstract translation: 第一检测器接收接收信号并从接收信号中提取数据信号。 硬判决转换器将由第一检测器输出的软符号转换成硬符号。 干扰消除器从接收到的信号中提取语音信号。 第二检测器连接到干扰消除器的输出，并提取各个声音信号。 第二检测器是与第一检测器不同的检测器类型。

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