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47 条记录 (耗时 0.033 秒)

    Matched filter circuit for spread spectrum communication
    11.
    发明授权
    Matched filter circuit for spread spectrum communication 失效
    用于扩频通信的匹配滤波电路

    公开(公告)号：US06031415A

    公开(公告)日：2000-02-29

    申请号：US733820

    申请日：1996-10-18

    申请人： Guoliang Shou ,  Changming Zhou ,  Makoto Yamamoto ,  Mamoru Sawahashi ,  Fumiyuki Adachi ,  Sunao Takatori

    发明人： Guoliang Shou ,  Changming Zhou ,  Makoto Yamamoto ,  Mamoru Sawahashi ,  Fumiyuki Adachi ,  Sunao Takatori

    IPC分类号： H04J13/00 ,  H03H17/02 ,  H04B1/7093 ,  H03K5/00 ,  H03D1/00

    CPC分类号： H03H17/0254 ,  H04B1/707

    摘要： The present invention provides a matched filter circuit available for processing long P/N codes in a small size circuit. A matched filter circuit according to the present invention performs the following processes in the proposed invention: i) sampling and holding circuits multiply part of the number of a long code; ii) multipliers are input in parallel to the sampling and holding circuit from the first multiplier register which can hold as many PN codes as the number of the sampling and holding circuits in i); iii) the PN codes are stored in the second multiplier register of the same capacity of the first multiplier resister when there is a PN code to be used sequentially to be PN codes; and iv) the PN codes in the second multiplier register are transmitted in parallel to the first multiplier register. The PN code is input to the second multiplier register in serial.

    摘要翻译： 本发明提供了可用于处理小尺寸电路中的长P / N码的匹配滤波器电路。 根据本发明的匹配滤波器电路在所提出的发明中执行以下处理：i）采样和保持电路乘以长码的数量的一部分; ii）乘法器与来自第一乘法器寄存器的采样和保持电路并联输入，其可以容纳与i）中的采样和保持电路的数量一样多的PN码; iii）当存在要被顺序使用的PN码为PN码时，PN码存储在第一乘法器电阻相同容量的第二乘法器寄存器中; 和iv）第二乘法器寄存器中的PN码并行发送到第一乘法器寄存器。 PN码以串行方式输入到第二个乘法器寄存器。

    Matched filter circuit
    12.
    发明授权
    Matched filter circuit 失效
    匹配滤波电路

    公开(公告)号：US5926512A

    公开(公告)日：1999-07-20

    申请号：US735787

    申请日：1996-10-23

    申请人： Guoliang Shou ,  Changming Zhou ,  Makoto Yamamoto ,  Sunao Takatori ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    发明人： Guoliang Shou ,  Changming Zhou ,  Makoto Yamamoto ,  Sunao Takatori ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    IPC分类号： H04J13/00 ,  H03H11/04 ,  H03H17/02 ,  H03H19/00 ,  H04B1/7093 ,  H03D1/00 ,  H04L27/06

    CPC分类号： H03H11/04 ,  H03H17/0254 ,  Y02B60/50

    摘要： A matched filter circuit for mobile communications is disclosed. The circuit may be fabricated in a small size using large-scale integration and can perform high-speed processing and double sampling at a reduced rate of power consumption. In one embodiment, a plurality of sampling and holding circuits each including a switch are divided into two groups. A control circuit successively closes one of the switches in the first group every chip time, while successively closing one of the switches in the second group at a timing shifted by one-half chip time from that of the first group, thereby enabling a double-sampling operation. Outputs of the sampling and holding circuits in each group are summed by an analog circuit with a high degree of linearity, resulting in a high processing speed combined with a reduced circuit size and power consumption.

    摘要翻译： 公开了一种用于移动通信的匹配滤波器电路。 该电路可以使用大规模集成在小尺寸上制造，并且可以以降低的功率消耗来执行高速处理和双重采样。 在一个实施例中，每个包括开关的多个采样和保持电路被分成两组。 控制电路在每个码片时间连续地闭合第一组中的一个开关，同时以与第一组相比半个码片时间偏移的时间顺序地关闭第二组中的一个开关，由此， 抽样操作。 每个组中的采样和保持电路的输出由具有高线性度的模拟电路相加，导致高处理速度以及减小的电路尺寸和功耗。

    Acquisition scheme and receiver for an asynchronous DS-CDMA cellular communication system
    13.
    发明授权
    Acquisition scheme and receiver for an asynchronous DS-CDMA cellular communication system 失效
    异步DS-CDMA蜂窝通信系统的采集方案和接收机

    公开(公告)号：US5910948A

    公开(公告)日：1999-06-08

    申请号：US955613

    申请日：1997-10-22

    申请人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou ,  Makoto Yamamoto ,  Sunao Takatori ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    发明人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou ,  Makoto Yamamoto ,  Sunao Takatori ,  Mamoru Sawahashi ,  Fumiyuki Adachi

    IPC分类号： H04B1/707 ,  H04B1/708 ,  H04B1/7083 ,  H04B7/26 ,  H04J13/00 ,  H04L7/00 ,  H04W36/00 ,  H04W48/18 ,  H04W56/00 ,  H04B7/216

    CPC分类号： H04W48/18 ,  H04B1/70735 ,  H04B1/70775 ,  H04B1/708 ,  H04B1/7083 ,  H04B1/7093 ,  H04B1/7117 ,  H04B2201/70702 ,  H04W36/00

    摘要： The present invention realizes a rapid and efficient cell search and small-size instrument for an asynchronous DS-CDMA cellular system. This cell search detects the correlation between the received signal and the short code of the control channel, and matched filter 22 detects the maximum electric power correlation peak location. Next, using correlators 28-1 to 28-n which are parallelly set in a plurality for RAKE processing with plurality, identifies the long code that is set in the system with the detected long code timing. After the long code is synchronized, a multipath signal is received using 28-1 to 28-n, and the data is judged by RAKE processing. When peripheral cell search is executed, after long code timing is detected by using matched filter 22, the long code of the candidate peripheral cell is designated using the same matched filter. Handover is safely realized by receiving the signal from the connected base station by correlators 28-1 to 28-n, and the base station signal through handover by 22.

    摘要翻译： 本发明实现了用于异步DS-CDMA蜂窝系统的快速且有效的小区搜索和小尺寸仪器。 该小区搜索检测接收信号与控制信道的短码之间的相关性，匹配滤波器22检测最大功率相关峰位置。 接下来，使用多个并行设置为用于RAKE处理的多个的相关器28-1至28-n识别具有检测到的长码定时的系统中设置的长码。 在长代码同步之后，使用28-1至28-n接收多路径信号，并且通过RAKE处理来判断数据。 当执行外围小区搜索时，在通过使用匹配滤波器22检测长码定时之后，使用相同的匹配滤波器来指定候选周边小区的长码。 通过由相关器28-1至28-n接收来自所连接的基站的信号，以及通过22次切换的基站信号来安全地实现切换。

    Matched filter
    15.
    发明授权
    Matched filter 失效
    匹配过滤器

    公开(公告)号：US5737368A

    公开(公告)日：1998-04-07

    申请号：US715321

    申请日：1996-09-17

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

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

    IPC分类号： H04J13/00 ,  G11C27/02 ,  H03H11/04 ,  H03H17/02 ,  H04B1/7093 ,  H03D1/00

    CPC分类号： H03H11/04 ,  H03H17/0254

    摘要： A matched filter contains a plurality of auxiliary sampling and holding circuits in addition to a main sampling and holding circuit containing multiple unit sampling and holding circuits. An auxiliary sampling and holding circuit is used to hold an input voltage, which would ordinarily be held by a unit sampling and holding circuit, when the unit sampling and holding circuit is being refreshed. By holding a part of the analog input voltage in the auxiliary sampling and holding circuits, refreshing is performed without decreasing the overall calculation speed.

    摘要翻译： 除了包含多个单元采样和保持电路的主采样和保持电路之外，匹配滤波器还包含多个辅助采样和保持电路。 当单元采样和保持电路被刷新时，辅助采样和保持电路用于保持通常由单元采样和保持电路保持的输入电压。 通过将模拟输入电压的一部分保持在辅助采样和保持电路中，在不降低总体计算速度的情况下执行刷新。

    Spread spectrum communication system
    16.
    发明授权
    Spread spectrum communication system 失效
    扩频通信系统

    公开(公告)号：US06212219B1

    公开(公告)日：2001-04-03

    申请号：US08780137

    申请日：1996-12-26

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

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

    IPC分类号： H04L2730

    CPC分类号： H04J13/0022 ,  H04J13/10 ,  H04J2013/0037

    摘要： The present invention has an object to provide a spread spectrum communication system for heightening the speed of communication. The present invention transfers the first PN code sequence itself as the first component, adds and transfers zero or more instances of the second PN code sequence given a phase difference as the second component, and defines an information for transmitting by the number of the second PN codes corresponding to a cycle of said first PN code sequence.

    摘要翻译： 本发明的目的是提供一种用于提高通信速度的扩频通信系统。 本发明将第一PN码序列本身作为第一分量传送，将给定相位差的第二PN码序列的零个或多个实例相加并传送作为第二分量，并且定义用于通过第二PN 对应于所述第一PN码序列的周期的码。

    Matched filter system
    18.
    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
    19.
    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。