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    Matched filter for spread spectrum communication systems and hybrid analog-digital transversal filter
    23.
    发明授权
    Matched filter for spread spectrum communication systems and hybrid analog-digital transversal filter 失效
    用于扩频通信系统和混合模数转换滤波器的匹配滤波器

    公开(公告)号：US06169771A

    公开(公告)日：2001-01-02

    申请号：US09014264

    申请日：1998-01-27

    申请人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou ,  Xiaoling Oin ,  Kazunori Motohashi ,  Makoto Yamamoto ,  Sunao Takatori

    发明人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou ,  Xiaoling Oin ,  Kazunori Motohashi ,  Makoto Yamamoto ,  Sunao Takatori

    IPC分类号： H04L2706

    CPC分类号： H03H17/0254 ,  H04B1/7093

    摘要： In one aspect, the present invention provides a low power consumption matched filter. The signal received at an input terminal is input to a shift register having stages equal to the spread code length number after conversion into digital signals in an A/D converter. The outputs of the shift register stages are input to XOR circuits set corresponding to each stage, so that XOR operations are performed between the outputs and corresponding spread code bits d1 to dN. The outputs of the XOR circuits are analogously added in an analog adder and output from an output terminal. In another aspect, a filter circuit uses an analog operation circuit to prevent lowered operational accuracy caused by residual charge. Input analog signals successively undergo sampling and holding in sample-and-hold circuits, are multiplied by coefficients stored in a shift register by multiplication circuits, and added in an addition circuit. Sample data transmission error storage is prevented by shifting coefficients in the shift register. Sample-and-hold circuits and multiplication circuits are formed by analog operation circuits, and each include a switch for canceling the residual charge. The sample-and-hold circuits and multiplication circuits normally working are refreshed sequentially by providing circuits for replacing their function. The addition circuit is refreshed in the same way.

    摘要翻译： 一方面，本发明提供一种低功耗匹配滤波器。 在A / D转换器转换成数字信号之后，在输入端接收的信号被输入到具有等于扩展码长度数的级的移位寄存器。 移位寄存器级的输出被输入到对应于每一级的XOR电路，从而在输出和对应的扩展码位d1至dN之间执行异或运算。 XOR电路的输出类似地添加到模拟加法器中并从输出端子输出。 另一方面，滤波器电路使用模拟运算电路来防止由剩余电荷引起的运算精度降低。 输入模拟信号在采样保持电路中连续进行采样和保持，乘以乘法电路存储在移位寄存器中的系数，并加入加法电路。 通过移位寄存器中的系数来防止采样数据传输错误存储。 采样保持电路和乘法电路由模拟操作电路形成，并且每个都包括用于消除剩余电荷的开关。 正常工作的采样保持电路和乘法电路通过提供更换其功能的电路依次刷新。 加法电路以相同的方式刷新。

    Time spread root Nyquist filter
    24.
    发明授权
    Time spread root Nyquist filter 失效
    时间扩散根奈奎斯特滤波器

    公开(公告)号：US6094667A

    公开(公告)日：2000-07-25

    申请号：US3507

    申请日：1998-01-06

    申请人： Xuping Zhou ,  Changming Zhou ,  Guoliang Shou

    发明人： Xuping Zhou ,  Changming Zhou ,  Guoliang Shou

    IPC分类号： H03H21/00 ,  H03H17/00 ,  H04B1/10 ,  H04L25/03 ,  G06F17/10 ,  H04L27/00

    CPC分类号： H03H17/00 ,  H04L25/03834

    摘要： In a method is disclosed for transmitting and receiving a transmission data signal, after the transmission data signal is generated, it is modulated by a first time spread root Nyquist filter to generate a transmission signal. The signal is then transmitted and received, whereupon the signal is transformed into a baseband signal. The baseband signal is then demodulated through a second time spread root Nyquist filter to revive the transmission data signal. An apparatus is also disclosed that performs this method. In addition, methods of separately transmitting and receiving signals are also described.

    摘要翻译： 公开了一种用于发送和接收发送数据信号的方法，在发送数据信号产生之后，由第一时间扩展根奈奎斯特滤波器对其进行调制以产生发送信号。 然后发送和接收信号，由此将信号变换成基带信号。 然后通过第二时间扩展根奈奎斯特滤波器对基带信号进行解调，以恢复发送数据信号。 还公开了执行该方法的装置。 此外，还描述了单独发送和接收信号的方法。

    Waiting circuit
    25.
    发明授权
    Waiting circuit 失效
    等待电路

    公开(公告)号：US6084922A

    公开(公告)日：2000-07-04

    申请号：US61097

    申请日：1998-04-16

    申请人： Changming Zhou ,  Xuping Zhou ,  Guoliang Shou

    发明人： Changming Zhou ,  Xuping Zhou ,  Guoliang Shou

    IPC分类号： H04B1/26 ,  H04B1/16 ,  H04B7/26 ,  H04J1/00 ,  H04M1/73 ,  H04W52/02 ,  H04L27/06

    CPC分类号： H04B1/1615 ,  H04W52/029

    摘要： A waiting circuit which is utilized in a mobile communication system. The waiting circuit detects a predetermined signal from a base station. The waiting circuit starts other circuits in the mobile communication system which are in a sleep mode when the predetermined signal is received. The predetermined signal is generated in the base station. The predetermined signal has a speed equal to a predetermined symbol rate and is modulated to be an intermediate frequency signal. The intermediate frequency signal is sampled in response to a sampling clock that has a speed equal to an integer times the symbol rate. The sampled intermediate frequency signal is input to a match filter which multiplies the sample signal by a predetermined sequence of coefficients.

    摘要翻译： 一种在移动通信系统中使用的等待电路。 等待电路检测来自基站的预定信号。 当接收到预定信号时，等待电路开始处于睡眠模式的移动通信系统中的其他电路。 在基站中产生预定信号。 预定信号具有等于预定符号速率的速度并被调制成中频信号。 响应于具有等于符号率的整数倍的速度的采样时钟对中频信号进行采样。 采样的中频信号被输入到将采样信号乘以预定系数序列的匹配滤波器。

    Matched filter circuit for spread spectrum communication
    26.
    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
    27.
    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
    28.
    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
    30.
    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。