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    CDMA receiver
    141.
    发明申请
    CDMA receiver 有权
    CDMA接收机

    公开(公告)号：US20020110109A1

    公开(公告)日：2002-08-15

    申请号：US10074939

    申请日：2002-02-13

    Inventor： Noriyuki Kawaguchi ,  Satoshi Nakamura ,  Kensuke Sawada ,  Dai Kimura ,  Tokuro Kubo ,  Morihiko Minowa

    IPC: H04B007/216

    CPC classification number: H04B1/712 ,  H04B1/7115 ,  H04B2201/7071

    Abstract: In a CDMA receiver for applying despread processing to direct wave or delayed waves that arrive via each path of multiple paths, applying synchronous detection processing to the despread signals obtained, combining the detection signals of respective paths and discriminating the received data on the basis of the combined signal, (1) a weighting unit provided for every path measures power of delayed received waves that arrive via its own path and, if the reception power is less than a set level (breakpoint level), subjects an output signal to weighting conforming to the reception power; (2) a RAKE combiner combines signals output from the weighting units of the respective paths; and (3) a data discrimination unit discriminates receive data based upon the output signal of the combiner.

    Abstract translation: 在用于对通过多个路径的每条路径到达的直达波或延迟波的解扩处理的CDMA接收机中，对获得的去扩展信号应用同步检测处理，组合各个路径的检测信号，并基于 组合信号，（1）为每个路径提供的加权单元测量通过其自身路径到达的延迟接收波的功率，并且如果接收功率小于设定电平（断点电平），则对输出信号进行加权以符合 接待能力; （2）RAKE组合器组合从相应路径的加权单元输出的信号; 和（3）数据鉴别单元基于组合器的输出信号来鉴别接收数据。

    Programmable modem apparatus for transmitting and receiving digital data, design method and use method for the modem
    144.
    发明申请
    Programmable modem apparatus for transmitting and receiving digital data, design method and use method for the modem 失效
    用于发送和接收数字数据的可编程调制解调器装置，调制解调器的设计方法和使用方法

    公开(公告)号：US20020067757A1

    公开(公告)日：2002-06-06

    申请号：US09972060

    申请日：2001-10-05

    Inventor： Lieven Philips ,  Jan Vanhoof ,  Maryse Wouters ,  Rik De Wulf ,  Veerle Derudder ,  Carl Van Himbeeck ,  Ivo Bolsens ,  Hugo De Man ,  Bert Gyselinckx

    IPC: H04K001/00

    CPC classification number: G06F8/10 ,  G06F17/5022 ,  G06F17/5045 ,  H04B1/707 ,  H04B2201/7071

    Abstract: The programmable modem for digital data of the present invention provides a highly programmable, digital modem implemented in an integrated circuit which can be customized to specific applications. The programmable modem uses spread spectrum techniques and is specifically programmable to alter the parameters of the modem to improve performance. The present invention also provides a systematic method and development kit to provide rapid customization of a modem for a particular application or for rapid specification of a high-performance application specific integrated circuit mode.

    Abstract translation: 本发明的用于数字数据的可编程调制解调器提供了可以根据特定应用定制的集成电路中实现的高度可编程的数字调制解调器。 可编程调制解调器使用扩展频谱技术，具体可编程以改变调制解调器的参数以提高性能。 本发明还提供了一种用于为特定应用提供调制解调器的快速定制或用于快速指定高性能专用集成电路模式的系统方法和开发套件。

    Integrated beamforming/rake/mud CDMA receiver architecture
    145.
    发明授权
    Integrated beamforming/rake/mud CDMA receiver architecture 失效
    集成波束成形/耙/泥CDMA接收机架构

    公开(公告)号：US06370182B2

    公开(公告)日：2002-04-09

    申请号：US09778854

    申请日：2001-02-08

    Applicant: Scott Bierly ,  Marc Harlacher ,  Robert Smarrelli ,  Aaron Weinberg

    Inventor： Scott Bierly ,  Marc Harlacher ,  Robert Smarrelli ,  Aaron Weinberg

    IPC: H04L2730

    CPC classification number: H04B1/708 ,  H04B1/7093 ,  H04B1/7117 ,  H04B2001/70706 ,  H04B2201/7071

    Abstract: A spread-spectrum demodulator architecture is presented which utilizes parallel processing to accomplish rapid signal acquisition with simultaneous tracking of multiple channels, while implementing an integrated multi-element adaptive beamformer, Rake combiner, and multi-user detector (MUD). A matched filter computational architecture is utilized, in which common digital arithmetic elements are used for both acquisition and tracking purposes. As each channel is sequentially acquired by the parallel matched filter, a subset of the arithmetic elements are then dedicated to the subsequent tracking of that channel. Additionally, multiple data inputs and delay lines are present, connecting the sampled baseband data streams of numerous RF bands and antenna elements with the arithmetic elements. The matched filter/despreader processing is virtually independent of channel origin or utilization; e.g., CDMA users, RF bands, beamformer elements, or Rake Fingers. Integration of the beamformer weighting computation with the demodulator results in substantial savings by sharing the existing circuitry performing carrier tracking and AGC. An optimal demodulator solution can be achieved through unified “space/time” processing, by providing all observables (element snapshots, Rake Fingers, carrier/symbol SNR/phase, etc.), for multiple channels, to a single adaptive algorithm processor that can beamform, Rake, and perform joint detection (MUD).

    Abstract translation: 提出了一种扩频解调器架构，其采用并行处理来实现多个信道同时跟踪的快速信号采集，同时实现集成多元自适应波束形成器Rake组合器和多用户检测器（MUD）。 使用匹配滤波器计算体系结构，其中通用数字算术元件用于采集和跟踪目的。 当每个通道由并行匹配滤波器顺序地获取时，算术元件的子集然后被专用于该通道的后续跟踪。 此外，存在多个数据输入和延迟线，将多个RF频带的采样基带数据流和天线元件与算术元件连接。 匹配的滤波器/解扩器处理实际上与信道起始或利用无关; 例如CDMA用户，RF频带，波束形成器元件或者Rake Fingers。 波束形成器加权计算与解调器的集成通过共享执行载波跟踪和AGC的现有电路实现了显着的节省。 通过统一的“空间/时间”处理，可以通过为多个通道提供所有可观察（元素快照，Rake Fingers，载波/符号SNR /相位等））到单个自适应算法处理器来实现最佳解调器解决方案， beamform，Rake，并进行联合检测（MUD）。

    Versatile digital signal processing system
    149.
    发明授权
    Versatile digital signal processing system 失效
    多功能数字信号处理系统

    公开(公告)号：US06259720B1

    公开(公告)日：2001-07-10

    申请号：US08764344

    申请日：1996-12-12

    Applicant: John Michael Buss ,  James Douglas Dworkin ,  Stephen Lee Smith

    Inventor： John Michael Buss ,  James Douglas Dworkin ,  Stephen Lee Smith

    IPC: H04B169

    CPC classification number: H04B1/707 ,  H04B1/7103 ,  H04B1/7115 ,  H04B2201/7071

    Abstract: A programmable versatile digital signal processing system architecture (FIG. 5) allows the implementation of functions for transmitting and receiving a variety of narrow and wide-band communication signaling schemes. The flexibility of the architecture (FIG. 5) makes it possible to receive and transmit many different spectral communication signals in real time by implementing signal processing functions such as filtering, spreading, de-spreading, rake filtering, and equalization under the direction of program instructions (FIGS. 13, 14, 15, and 16).

    Abstract translation: 可编程通用数字信号处理系统架构（图5）允许实现用于发送和接收各种窄带和宽带通信信令方案的功能。 架构的灵活性（图5）使得可以通过在程序的方向上实现诸如滤波，扩展，解扩，耙滤波和均衡之类的信号处理功能来实时地接收和发送许多不同的频谱通信信号 指令（图13，图14，图15和图16）。

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