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。

公开(公告)号：US6038250A

公开(公告)日：2000-03-14

申请号：US3509

申请日：1998-01-06

申请人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou

发明人： Guoliang Shou ,  Changming Zhou ,  Xuping Zhou

IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B7/26 ,  H04W56/00 ,  H04W76/02 ,  H04B7/216

CPC分类号： H04B1/7077 ,  H04B1/7083 ,  H04B1/70735 ,  H04B1/70751 ,  H04B2201/70702

摘要： Cells are searched at a high speed using an initial synchronization method and a receiver for a DS-CDMA inter base station asynchronous cellular system. A base band received signal is input to a matched filter and is correlated with a spread code supplied from a spread code generator. A signal electric power calculator calculates the electric power of the correlation output of the matched filter, and outputs the result to a long code synchronization timing determiner, a threshold value calculator, and a long code identifier. During the initial cell search, the spread code generator outputs a short code #0 that is common to the control channel of each of the base stations. After the long code synchronization timing has been determined, each of the segments of the N chips which constitutes a portion of the synthesized spread code sequence synthesized from a long code #i that is unique to each of the base stations and the short code #0 is sequentially replaced and output.

摘要翻译： 使用初始同步方法和用于DS-CDMA基站间异步蜂窝系统的接收机以高速搜索小区。 基带接收信号被输入到匹配滤波器，并与从扩展码发生器提供的扩展码相关。 信号电力计算器计算匹配滤波器的相关输出的功率，并将结果输出到长码同步定时确定器，阈值计算器和长码标识符。 在初始小区搜索期间，扩频码发生器输出每个基站的控制信道共同的短码＃0。 在确定了长代码同步定时之后，构成从每个基站唯一的长码#i合成的合成扩展码序列的一部分的N个码片的每个片段和短码＃0 顺序更换并输出。

公开(公告)号：US06263012B1

公开(公告)日：2001-07-17

申请号：US09174910

申请日：1998-10-19

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

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

IPC分类号： H04B169

CPC分类号： H04B1/7093

摘要： An output of analog complex matched filter is simplified to be a one dimensional signal such as electrical power. Multi-path detection is performed by the simplified signal. The output of the matched filter is received and processed only when peaks occur in the one dimensional signal.

摘要翻译： 模拟复合匹配滤波器的输出被简化为诸如电功率的一维信号。 通过简化信号执行多路径检测。 匹配滤波器的输出仅在一维信号中出现峰值时才被接收和处理。

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。

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。

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。