公开(公告)号：US06512785B1

公开(公告)日：2003-01-28

申请号：US09247828

申请日：1999-02-11

申请人： Changming Zhou ,  Xuping Zhou ,  Kunihiko Suzuki ,  Xiaoxing Zhang ,  Takashi Tomatsu

发明人： Changming Zhou ,  Xuping Zhou ,  Kunihiko Suzuki ,  Xiaoxing Zhang ,  Takashi Tomatsu

IPC分类号： H04B1707

CPC分类号： H04B1/7093 ,  H04B2201/70707

摘要： A matched filter bank including a plurality of matched filters and a sampling and holding units commonly used by the total matched filters. Therefore, the circuit size is diminished. An inverting amplifier for the matched filter with a variable gain includes an input capacitance, an inverting amplifier connected to an output of the input capacitance, and a plurality of feedback capacitances connected between an input and output of the inverting amplifier. A plurality of switches are connected to input side of the feedback capacitances for alternatively connecting the feedback capcitanec to the input of the inverting amplifier or a reference voltage. The feedback capacitances connected to the reference voltage are invalid with respect to a composite capacitance of the feedback capacitance and have no influence to the amplifier.

摘要翻译： 包括多个匹配滤波器的匹配滤波器组和由总匹配滤波器通常使用的采样和保持单元。 具有可变增益的匹配滤波器的反相放大器包括输入电容，连接到输入电容的输出的反相放大器和连接在输入电容的输入和输出之间的多个反馈电容 反相放大器。 多个开关连接到反馈电容的输入侧，用于将反馈capcitanec交替地连接到反相放大器的输入端或参考电压。 连接到参考电压的反馈电容相对于反馈电容的复合电容无效，并且对放大器没有影响。

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。

公开(公告)号：US06278724B1

公开(公告)日：2001-08-21

申请号：US09032776

申请日：1998-03-06

申请人： Changming Zhou ,  Guoliang Shou ,  Kunihiko Suzuki ,  Xuping Zhou ,  Xiaoling Qin ,  Jie Chen ,  Mamoru Sawahashi ,  Fumiyuki Adachi

发明人： Changming Zhou ,  Guoliang Shou ,  Kunihiko Suzuki ,  Xuping Zhou ,  Xiaoling Qin ,  Jie Chen ,  Mamoru Sawahashi ,  Fumiyuki Adachi

IPC分类号： H04L2732

CPC分类号： H04B1/7113 ,  H04B1/7117 ,  H04B1/712 ,  H04B1/7183

摘要： A signal reception apparatus in the spread spectrum communication system requires only a small amount of circuitry and consumes a small amount of electric power. A quadrature detector decomposes received signals into in-phase components and quadrature components, and supplies them to a complex-type matched filter. The complex-type matched filter de-spreads the in-phase components and the quadrature components and sends them to a multi-path selector. The multi-path selector selects, from among the received de-spread signals, multiple paths having high levels of signal electric powers and sends the received signals of the selected paths to multiple phase correction blocks. Analog operation circuits calculate phase errors of the received signals of two successive pilot symbol blocks for each path. An analog operation circuit corrects the phases of the received signals of the information symbol block that has been received between the two successive pilot symbol blocks. A rake combiner synchronously combines the phase-corrected de-spread received signals of each path.

摘要翻译： 扩频通信系统中的信号接收装置仅需要少量的电路并消耗少量的电力。 正交检测器将接收信号分解为同相分量和正交分量，并将其提供给复合型匹配滤波器。 复合型匹配滤波器对同相分量和正交分量进行解扩，并将它们发送到多路径选择器。 多径选择器从接收到的解扩信号中选择具有高电平信号电功率的多个路径，并将所选择的路径的接收信号发送到多个相位校正块。 模拟运算电路计算每个路径的两个连续导频符号块的接收信号的相位误差。 模拟运算电路校正在两个连续的导频符号块之间已经接收到的信息符号块的接收信号的相位。 瑞克组合器同步地组合每个路径的相位校正的去扩展接收信号。

公开(公告)号：US06340942B1

公开(公告)日：2002-01-22

申请号：US09413475

申请日：1999-10-06

申请人： Changming Zhou ,  Kunihiko Suzuki ,  Takashi Tomatsu ,  Masataka Fukui

发明人： Changming Zhou ,  Kunihiko Suzuki ,  Takashi Tomatsu ,  Masataka Fukui

IPC分类号： H03M134

CPC分类号： H03M1/42

摘要： An analog to digital converter comprises a differential input portion that receives an input voltage and a reference voltage and has a first and second output terminals, a positive feedback portion connected to said first and second output terminals, a buffer if CMOSFETs connected at its input to the first output terminal, a second buffer connected at its input to the second output terminal, and a comparison circuit including a first switching portion connected between the first and second output terminals for connecting and disconnecting the first and second output terminals in response to a comparison clock signal. The comparison circuit is connected at its output to the first or second buffer. The input voltage and the reference voltage are compared when said switching portion changes from the connecting condition to the disconnecting condition in response to the comparison clock signal.

摘要翻译： 模数转换器包括差分输入部分，其接收输入电压和参考电压，并且具有第一和第二输出端子，连接到所述第一和第二输出端子的正反馈部分，如果CMOSFET在其输入端连接到 第一输出端子，在其输入端连接到第二输出端子的第二缓冲器，以及比较电路，包括连接在第一和第二输出端子之间的第一开关部分，用于响应于比较来连接和断开第一和第二输出端子 时钟信号。 比较电路在其输出端连接到第一或第二缓冲器。 当所述切换部分响应于比较时钟信号而从连接状态变为断开状态时，比较输入电压和参考电压。

公开(公告)号：US06300823B1

公开(公告)日：2001-10-09

申请号：US09257914

申请日：1999-02-26

申请人： Changming Zhou ,  Kunihiko Suzuki ,  Takashi Tomatsu

发明人： Changming Zhou ,  Kunihiko Suzuki ,  Takashi Tomatsu

IPC分类号： H03K500

CPC分类号： H03H15/00

摘要： A filter circuit comprises a plurality of sampling and holding circuits for sampling and holding analog input signal with a predetermined sampling period, a calculation circuit for multiplying each the analog input signal by a predetermined multiplier, and for summing the multiplication results. The sampling and holding circuits are controlled in an electrical power such that the electrical power is decreased when holding.

摘要翻译： 滤波器电路包括多个采样和保持电路，用于以预定采样周期对模拟输入信号进行采样和保持;计算电路，用于将每个模拟输入信号乘以预定乘法器，并将相乘结果相加。 采样和保持电路被控制在电力中，使得在保持时电力减小。

公开(公告)号：US06240148B1

公开(公告)日：2001-05-29

申请号：US08908919

申请日：1997-08-08

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

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

IPC分类号： H04B710

CPC分类号： H04B7/08 ,  H04B1/7115 ,  H04B2201/70701

摘要： The present invention provides a path-diversity system featuring a small-size phase compensating circuit. This circuit calculates a compensating coefficient according to the signals of a pilot block or a pair of pilot blocks surrounding an information block, and then compensates information signals thereafter by the calculated compensating coefficient.

摘要翻译： 本发明提供一种具有小尺寸相位补偿电路的路径分集系统。 该电路根据导频块或围绕信息块的一对导频块的信号来计算补偿系数，然后通过计算的补偿系数补偿信息信号。

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。

公开(公告)号：US5974038A

公开(公告)日：1999-10-26

申请号：US864784

申请日：1997-05-29

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： H04B1/707 ,  H04B1/7075 ,  H04B1/7093 ,  H04B1/7115 ,  H04L7/00 ,  H04B7/216

CPC分类号： H04B1/708 ,  H04B1/7093 ,  H04B1/7115 ,  H04B2201/70709

摘要： This invention reduces electric power consumption of a CDMA communication system receiver while it is in the wait mode. A received spread spectrum signal is demodulated in multiplication means into baseband signals Ri and Rq, and inputted into a complex matched filter. This filter is intermittently driven by supply voltage control means to perform acquisition of received signals. When an electric power calculation circuit detects the output of the filter to reach a peak equal to or greater than a predetermined value, the received signals undergo acquisition by controlling n number of correlators 26-1 to 26-n to work by a correlator controlling circuit. Moreover, de-spreading is performed. The outputs from each correlator 46-1 to 26-n are given to a RAKE combiner and demodulated by the RAKE by a combining and demodulating circuit.

摘要翻译： 本发明在CDMA通信系统接收机处于等待模式时降低电力消耗。 接收的扩频信号在乘法装置中被解调为基带信号Ri和Rq，并输入到复匹配滤波器中。 该滤波器由电源电压控制装置间歇地驱动，以执行接收信号的采集。 当电力计算电路检测到滤波器的输出达到等于或大于预定值的峰值时，通过控制n个相关器26-1至26-n来由相关器控制电路工作来接收接收的信号 。 此外，进行解扩。 来自每个相关器46-1至26-n的输出被提供给RAKE组合器，并由RAKE通过组合和解调电路进行解调。

公开(公告)号：US5930290A

公开(公告)日：1999-07-27

申请号：US841217

申请日：1997-04-30

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

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

IPC分类号： H04B1/707 ,  H04B1/7093 ,  H04J13/10 ,  H04B15/00 ,  H04B7/216

CPC分类号： H04J13/0077 ,  H04B1/7093

摘要： A fast spread spectrum communication system is provided, having fewer circuits and requiring fewer PN codes to be assigned to a user. A series of digital data to be transmitted, is divided into 4-bit frames. The 4-bit data of each frame is divided into the first through fourth elements in a predetermined order. The first complex number is constructed by the first and second elements, and the second complex number is determined according to the value of the third and fourth elements. The spectrum of the data to be transmitted is spread by multiplying these complex numbers. Four matched filters despread a received signal by different combinations of PN codes stored in a receiver. The first through fourth elements are recovered according to the outputs of the matched filters.

摘要翻译： 提供了一种快速扩频通信系统，具有较少的电路并且需要较少的PN码来分配给用户。 要发送的一系列数字数据被分为4位帧。 每帧的4位数据按预定顺序分成第一至第四元素。 第一复数由第一和第二元素构成，第二复数根据第三和第四元素的值确定。 要传输的数据的频谱通过乘以这些复数来传播。 四个匹配滤波器通过存储在接收机中的PN码的不同组合对接收信号进行解扩。 根据匹配滤波器的输出，恢复第一至第四元件。

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。