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47 条记录 (耗时 0.027 秒)

    Matched filter system
    21.
    发明授权
    Matched filter system 失效
    匹配过滤系统

    公开(公告)号：US5844937A

    公开(公告)日：1998-12-01

    申请号：US744954

    申请日：1996-11-07

    申请人： Changming Zhou ,  Guoliang Shou ,  Makoto Yamamoto ,  Kenzo Urabe ,  Sunao Takatori

    发明人： Changming Zhou ,  Guoliang Shou ,  Makoto Yamamoto ,  Kenzo Urabe ,  Sunao Takatori

    IPC分类号： H03H15/00 ,  H03H11/04 ,  H03H17/02 ,  H04B1/7093 ,  H04J13/00 ,  H04B15/00

    CPC分类号： H04B1/7093 ,  H03H11/04 ,  H03H17/0254

    摘要： The present invention solves the conventional problems and has an object to provide a matched filter system of high process in speed, a small size and low electric power consumption. The matched filter circuits of each matched filter set is allocated different n combinations of M/n digits selected from the M length PN code sequence picking one out of every n digits, cyclically performs sampling every 1 chip time duration the input signals to be inputted to each set constructed by matched filter circuits by n sets each of which including n matched filter circuits, and calculates the sum of outputs of all matched filter circuits.

    摘要翻译： 本发明解决了以往的问题，其目的在于提供一种速度快，体积小，功耗低的匹配滤波系统。 每个匹配滤波器组的匹配滤波器电路被分配从从n个数字中选出一个的M个长度PN码序列中选择的M / n个数字的不同n个组合，每1个码片持续时间周期地执行要输入的输入信号的采样 每组由匹配滤波器电路构成，每组包括n个匹配滤波器电路，并且计算所有匹配滤波器电路的输出之和。

    Demodulator for CDMA spread spectrum communication using multiple pn codes
    22.
    发明授权
    Demodulator for CDMA spread spectrum communication using multiple pn codes 失效
    用于使用多个pn码的CDMA扩频通信的解调器

    公开(公告)号：US5812546A

    公开(公告)日：1998-09-22

    申请号：US802635

    申请日：1997-02-19

    申请人： Changming Zhou ,  Guoliang Shou ,  Xuping Zhou ,  Makoto Yamamoto ,  Kenzo Urabe ,  Sunao Takatori

    发明人： Changming Zhou ,  Guoliang Shou ,  Xuping Zhou ,  Makoto Yamamoto ,  Kenzo Urabe ,  Sunao Takatori

    IPC分类号： H04B1/707 ,  H04B1/7093 ,  H04J13/04

    CPC分类号： H04B1/7093

    摘要： The demodulator has a plurality of matched filters in parallel. Each matched filter has a different binary PN code, a plurality of sample holders, a plurality of multipliers, an adder, and a controller. The sample holders has a common input, a switch, a first capacitor, a first inverse amplifier with an output and an input connected to the common input through the switch and the capacitor, and a first feedback capacitor for feeding the output of the first inverse amplifier back to the input. Each multiplier has a first and second sub-multiplexers, one of sub-multiplexer selecting corresponding sample holder output and another sub-multiplexer selecting a reference voltage.

    摘要翻译： 解调器具有并联的多个匹配滤波器。 每个匹配滤波器具有不同的二进制PN码，多个采样保持器，多个乘法器，加法器和控制器。 样本保持器具有公共输入，开关，第一电容器，具有输出的第一反相放大器和通过开关和电容器连接到公共输入的输入端，以及用于馈送第一反相器的输出的第一反馈电容器 放大器返回输入。 每个乘法器具有第一和第二子复用器，其中一个子复用器选择对应的采样保持器输出，另一个副多路复用器选择参考电压。

    Complex number calculation circuit
    24.
    发明授权
    Complex number calculation circuit 失效
    复数计算电路

    公开(公告)号：US5751624A

    公开(公告)日：1998-05-12

    申请号：US715732

    申请日：1996-09-19

    申请人： Changming Zhou ,  Guoliang Shou ,  Makoto Yamamoto ,  Sunao Takatori

    发明人： Changming Zhou ,  Guoliang Shou ,  Makoto Yamamoto ,  Sunao Takatori

    IPC分类号： G06G7/22 ,  G06J1/00 ,  G06C15/08

    CPC分类号： G06G7/22 ,  G06J1/00

    摘要： A complex number calculation circuit for directly multiplying a complex number of an analog signal by a digital complex number as a multiplier. A capacitive coupling is used with a plurality of parallel capacitances corresponding to weights of bits of real and imaginary parts of the multiplier. The sign of the multiplier is represented by selection of output paths. A complex number calculation circuit for calculating approximated absolute values is suitable for an analog architecture. Inverter circuits are used for linear inversion of analog values, and capacitive couplings are used for weighted addition. Analog maximum and minimum circuits with parallel MOSs are used for maximum and minimum calculation.

    摘要翻译： 一种用于将复数个模拟信号乘以数字复数作为乘数的复数计算电路。 电容耦合用于与乘法器的实部和虚部的位的权重相对应的多个并联电容。 乘法器的符号由输出路径的选择表示。 用于计算近似绝对值的复数计算电路适用于模拟架构。 逆变电路用于模拟值的线性反演，电容耦合用于加权相加。 具有并联MOS的模拟最大和最小电路用于最大和最小计算。

    Signal reception apparatus for DS-CDMA communication system
    26.
    发明授权
    Signal reception apparatus for DS-CDMA communication system 失效
    DS-CDMA通信系统的信号接收装置

    公开(公告)号：US06426949B1

    公开(公告)日：2002-07-30

    申请号：US09098357

    申请日：1998-06-17

    申请人： Changming Zhou ,  Xuping Zhou ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    发明人： Changming Zhou ,  Xuping Zhou ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    IPC分类号： H04B7216

    CPC分类号： H04B1/707 ,  H04B1/7115 ,  H04B2201/70701

    摘要： A signal reception apparatus for DS-CDMA communication system having a complex matched filter for despreading a received signal into I- and Q-components Di and Dq of despread signal. Dj and Dq are input to a path selection portion 13 for extracting a phase error in a pilot symbol block of the despread signal. A phase compensation signal is calculated according to the phase error in the portion 13. An information symbol is compensated according to the phase compensation signal. An electrical power is calculated from an average of the phase compensation signal of several slots for selecting paths to be received. The selected paths are combined with phase synchronized by a rake combiner 14.

    摘要翻译： 一种具有复数匹配滤波器的DS-CDMA通信系统的信号接收装置，用于将接收信号解扩展成解扩信号的I和Q分量Di和Dq。 Dj和Dq被输入到路径选择部分13，用于提取去扩展信号的导频符号块中的相位误差。 根据部分13中的相位误差来计算相位补偿信号。根据相位补偿信号补偿信息符号。 从用于选择要接收的路径的几个时隙的相位补偿信号的平均值计算电功率。 所选择的路径与由耙式组合器14相位同步的组合。

    Spread spectrum communication system
    27.
    发明授权
    Spread spectrum communication system 失效
    扩频通信系统

    公开(公告)号：US06370130B1

    公开(公告)日：2002-04-09

    申请号：US09092914

    申请日：1998-06-08

    申请人： Changming Zhou ,  Guoliang Shou ,  Xuping Zhou ,  Kunihiko Suzuki ,  Makoto Yamamoto

    发明人： Changming Zhou ,  Guoliang Shou ,  Xuping Zhou ,  Kunihiko Suzuki ,  Makoto Yamamoto

    IPC分类号： H04B7216

    CPC分类号： H04B1/7077 ,  H04B1/70735 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70702 ,  H04B2201/7071

    摘要： A receiver for spread spectrum communication system receives a traffic channel and common control channel by a plurality of matched filters at least one of which is selectively available for the traffic or the common control channel. At the initial acquisition, a plurality of matched filters are used for receiving the common control channel. At the hand-over, a plurality of matched filters are used to receive traffic channels of the current base station and the base stations in the adjacent cells.

    摘要翻译： 用于扩频通信系统的接收机通过多个匹配滤波器接收业务信道和公共控制信道，其中至少一个匹配滤波器可选择地可用于业务或公共控制信道。 在初始采集时，使用多个匹配滤波器来接收公共控制信道。 在切换时，使用多个匹配滤波器来接收当前基站和相邻小区中的基站的业务信道。

    Complex multiplication circuit
    28.
    发明授权
    Complex multiplication circuit 失效
    复数乘法电路

    公开(公告)号：US6122654A

    公开(公告)日：2000-09-19

    申请号：US66540

    申请日：1998-04-27

    申请人： Changming Zhou ,  Xuping Zhou ,  Guoliang Shou

    发明人： Changming Zhou ,  Xuping Zhou ,  Guoliang Shou

    IPC分类号： G06F17/10 ,  G06F17/16 ,  G06G7/22 ,  H03F1/34 ,  H03H15/00 ,  H03H17/02 ,  G06F7/52

    CPC分类号： G06G7/22

    摘要： A complex multiplication circuit of a calculation formula equivalent but different from the usual formula.The calculation formula is as follows:Pr={x(a+b)-b(x+y)} equivalent to (ax-by)Pi={y(a-b)+b(x+y)} equivalent to (ay+bx)Here,Input signal: x+jyMultiplier:a+jbMultiplication result:Pr+jPi.

    摘要翻译： 计算公式的复乘法电路等效但不同于通常的公式。 计算公式如下：等价于（ay）的（ax-by）Pi = {y（ab）+ b（x + y）}的Pr = {x（a + b）-b（x + y） + bx）这里，输入信号：x + jy乘数：a + jb乘法结果：Pr + jPi。

    Phase correction method and apparatus for spectrum spread wireless communication receiver
    30.
    发明授权
    Phase correction method and apparatus for spectrum spread wireless communication receiver 失效
    频谱扩展无线通信接收机的相位校正方法及装置

    公开(公告)号：US6081549A

    公开(公告)日：2000-06-27

    申请号：US4607

    申请日：1998-01-08

    申请人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou

    发明人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou

    IPC分类号： H04B1/707 ,  H04B1/712 ,  H04B7/01 ,  H04B7/08 ,  H04K1/00

    CPC分类号： H04B1/711 ,  H04B7/01 ,  H04B1/7093 ,  H04B1/7117 ,  H04B2201/70701

    摘要： Phases of the spread spectrum signal are corrected with a high degree of accuracy by a minimum of circuitry. One of phase correction circuits 31-34 of the receiver corresponds to each path. The I-component and Q-component of a despread output are supplied to the phase correction circuits 31-34. A phase error extractor 1 extracts the first phase error from a received pilot block. A phase corrector 2 corrects the phase error of a received information symbol using a correction vector that has been calculated based on the first phase error. The RAKE synthesizer 25 synthesizes the corrected received signal with outputs of the phase correction A circuits of other paths and outputs the synthesized signal to a temporary determiner 3 which temporarily determines an information symbol to be processed. The phase error is modified in a correction vector modifier 4 using the temporary determination result. A new correction vector is calculated based on the modified phase error. In this way, the correction vectors are sequentially modified based on the temporary determination results for the information symbols.

    摘要翻译： 通过最小的电路以高精度校正扩频信号的相位。 接收机的相位校正电路31-34中的一个对应于每个路径。 解扩输出的I分量和Q分量被提供给相位校正电路31-34。 相位误差提取器1从接收到的导频块中提取第一相位误差。 相位校正器2使用已经基于第一相位误差计算的校正矢量校正接收信息符号的相位误差。 RAKE合成器25将校正的接收信号与其他路径的相位校正A电路的输出合成，并将合成信号输出到暂时确定要处理的信息符号的临时确定器3。 使用临时确定结果在校正矢量修改器4中修改相位误差。 基于修正的相位误差计算新的校正矢量。 以这种方式，基于信息符号的临时确定结果，顺序修改校正矢量。