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：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。

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。

公开(公告)号：US5959875A

公开(公告)日：1999-09-28

申请号：US812650

申请日：1997-03-07

申请人： Nobuaki Kawahara ,  Kenzo Urabe ,  Changming Zhou ,  Guoliang Shou

发明人： Nobuaki Kawahara ,  Kenzo Urabe ,  Changming Zhou ,  Guoliang Shou

IPC分类号： G06G7/19

CPC分类号： G06G7/1921

摘要： A signal characterizer for performing functional transformations such as Fast Fourier Transforms (FFTs), which converts an input serial analog signal into a plurality of parallel discrete signals using an analog-type serial-to-parallel converter. The discrete signals are then supplied to the input terminals of butterfly operation circuits to process the parallel discrete signals into a plurality of transformed signals. A switch supplies the transformed signals to a serial signal output terminal. The switch is controlled by a controller so that the input signal sequence is converted to a serial signal sequence according to a predetermined order.

摘要翻译： 一种用于执行诸如快速傅立叶变换（FFT）的功能变换的信号表征器，其使用模拟型串并转换器将输入的串行模拟信号转换为多个并行离散信号。 然后将离散信号提供给蝶形运算电路的输入端，以将并行离散信号处理成多个变换信号。 开关将变换的信号提供给串行信号输出端子。 开关由控制器控制，使得输入信号序列根据预定顺序被转换成串行信号序列。

公开(公告)号：US5956333A

公开(公告)日：1999-09-21

申请号：US781631

申请日：1997-01-10

申请人： Changming Zhou ,  Guoliang Shou ,  Kenzo Urabe ,  Tetsuhiko Miyatani

发明人： Changming Zhou ,  Guoliang Shou ,  Kenzo Urabe ,  Tetsuhiko Miyatani

IPC分类号： H03H17/00 ,  H04B1/7107 ,  H04J13/00 ,  H04K1/00

CPC分类号： H04B1/71075

摘要： A multi-user demodulator eliminates synchronization problems without interference cancellation. A threshold process is applied to a despread signal to extract each user's signal. The extracted signals are respread, and those respread signals other than a specifier user's signal are subtracted from the received signal to ideally extract the specific user's signal.

摘要翻译： 多用户解调器消除了无干扰消除的同步问题。 对解扩信号应用阈值处理以提取每个用户的信号。 提取的信号被重新发送，并且从接收到的信号中减去除指定者用户信号之外的那些再现信号，以理想地提取特定用户的信号。

公开(公告)号：US06671509B1

公开(公告)日：2003-12-30

申请号：US09339835

申请日：1999-06-25

申请人： Masaki Tanaka ,  Kenzo Urabe ,  Seigo Miyoshi ,  Yoshikuni Itoh ,  Hideto Yamaguchi

发明人： Masaki Tanaka ,  Kenzo Urabe ,  Seigo Miyoshi ,  Yoshikuni Itoh ,  Hideto Yamaguchi

IPC分类号： H04Q732

CPC分类号： H04W8/245 ,  H04W8/183

摘要： A mobile station (mobile communication unit) receives system software from a base station via an antenna and a transmitter/receiver, and stores the received system software in a memory. A digital signal processor in the mobile station then performs communication processing according to the system software stored in the memory. By transmitting various system software from the base station, the single mobile station can easily be adapted to different communication principles. The base station also receives system software from a center via a public exchange network, and stores the received system software in a memory. A digital signal processor in the base station then performs communication processing according to the system software stored in the memory.

摘要翻译： 移动站（移动通信单元）经由天线和发射机/接收机从基站接收系统软件，并将接收到的系统软件存储在存储器中。 然后，移动站中的数字信号处理器根据存储在存储器中的系统软件执行通信处理。 通过从基站发送各种系统软件，单个移动台可以容易地适应不同的通信原理。 基站还通过公共交换网从中心接收系统软件，并将接收到的系统软件存储在存储器中。 然后，基站中的数字信号处理器根据存储在存储器中的系统软件执行通信处理。

公开(公告)号：US06301292B1

公开(公告)日：2001-10-09

申请号：US09290398

申请日：1999-04-13

申请人： Ichiro Imaizumi ,  Tetsuhiko Miyatani ,  Shunji Abe ,  Kenzo Urabe ,  Hitoshi Kato

发明人： Ichiro Imaizumi ,  Tetsuhiko Miyatani ,  Shunji Abe ,  Kenzo Urabe ,  Hitoshi Kato

IPC分类号： H04L2730

CPC分类号： H04B1/70753 ,  H04B1/7095 ,  H04B2201/70709

摘要： A despreading circuit which can reduce a circuit scale and power consumption is described. The circuit includes an A/D converter which converts a CDMA modulated analog signal to a digital signal of N bits, and a searcher which detects a synchronization phase from high-order small bits of the N bits and outputs synchronization phase information to a control circuit. The control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information. The sliding correlator despreads the N bit digital signal outputted by the A/D converter and outputs the resulting correlation output as a despreading signal.

摘要翻译： 描述了可以减小电路规模和功耗的解扩电路。 该电路包括将CDMA调制的模拟信号转换为N位的数字信号的A / D转换器，以及从N位的高阶小位检测同步相位的搜索器，并将同步相位信息输出到控制电路 。 控制电路根据相位信息，向滑动相关器发送允许解扩的信号。 滑动相关器对由A / D转换器输出的N位数字信号进行解扩，并输出所得的相关输出作为解扩信号。

公开(公告)号：US08036224B2

公开(公告)日：2011-10-11

申请号：US10584135

申请日：2003-12-23

申请人： Leif Axelsson ,  Yoshio Honda ,  Kenzo Urabe ,  Toshikane Oda

发明人： Leif Axelsson ,  Yoshio Honda ,  Kenzo Urabe ,  Toshikane Oda

IPC分类号： H04L12/28

CPC分类号： H04W40/02 ,  H04L45/00 ,  H04L45/123 ,  H04W40/10 ,  H04W40/12 ,  H04W40/18 ,  H04W40/22 ,  H04W40/246 ,  H04W40/248 ,  H04W40/26 ,  H04W40/28 ,  H04W40/30 ,  H04W84/18

摘要： The present invention relates to a method for efficient routing in a multiple hop wireless communication network. The invention is characterized in that data packets are routed over transmission paths using the following steps providing link status information by acquiring link status quality between nodes in the network, updating a routing element (101) with said link status information, determining possible routes with essentially similar link quality status for said data packet, and routing said data packet via the determined routes.

摘要翻译： 本发明涉及一种在多跳无线通信网络中有效路由的方法。 本发明的特征在于，数据分组通过传输路径被路由使用以下步骤，通过获取网络中的节点之间的链路状态质量来提供链路状态信息，用所述链路状态信息更新路由选择元件（101），基本上确定可能的路由 用于所述数据分组的类似的链路质量状态，以及经由确定的路由路由所述数据分组。

公开(公告)号：US06665282B1

公开(公告)日：2003-12-16

申请号：US09204359

申请日：1998-12-04

申请人： Håkan B. Eriksson ,  Martin J. Jonson ,  Kenzo Urabe

发明人： Håkan B. Eriksson ,  Martin J. Jonson ,  Kenzo Urabe

IPC分类号： H04Q700

CPC分类号： H04B1/7113 ,  H04B1/707 ,  H04B1/7093 ,  H04B1/7115 ,  H04B1/7117

摘要： A first searcher searches a first channel (e.g., a broadcast channel), a second searcher searches a second channel (e.g., a traffic channel), and the second searcher uses information from the first searcher to search the second channel. In one aspect of the invention, the first searcher generates a delay profile for the first channel. A second searcher uses the delay profile to generate a set of taps for the second channel. In another aspect of the invention, the first searcher is configured to find a maximum correlation value (or a set of maximum correlation values). The second searcher shifts a search finger by an amount equal to the delay corresponding to the maximum correlation value(s). The second searcher can also shift a code corresponding to the second signal by an amount equal to the sum of the delay corresponding to the maximum correlation value(s) and a predetermined value.

摘要翻译： 第一搜索者搜索第一频道（例如，广播频道），第二搜索者搜索第二频道（例如，业务信道），并且第二搜索者使用来自第一搜索者的信息来搜索第二频道。 在本发明的一个方面，第一搜索器产生用于第一信道的延迟分布。 第二搜索者使用延迟分布来生成用于第二信道的一组抽头。 在本发明的另一方面，第一搜索器被配置为找到最大相关值（或一组最大相关值）。 第二搜索者将搜索指针移动等于对应于最大相关值的延迟的量。 第二搜索器还可以将对应于第二信号的代码移位一个等于对应于最大相关值的延迟和一个预定值的总和的量。

公开(公告)号：US6148044A

公开(公告)日：2000-11-14

申请号：US783093

申请日：1997-01-14

申请人： Hiroko Ono ,  Masatoshi Takada ,  Kenzo Urabe

发明人： Hiroko Ono ,  Masatoshi Takada ,  Kenzo Urabe

IPC分类号： H04B1/707 ,  H03H21/00 ,  H04B1/16 ,  H04B1/7093 ,  H04J13/00 ,  H03D1/00

CPC分类号： H03H21/0012

摘要： A correlating filter includes a delay circuit which outputs a plurality of tap output signals TP1 to TPn having different delays. The correlating filter further includes a weighted adder circuit which weights the tap output signals, respectively, and adds the weighted tap output signals so as to derive a correlated output signal. A timing control circuit produces a control signal based on the correlated output signal from the weighted adder circuit. The control signal is high in level when the correlated output signal has a correlation peak. A power feed to the weighted adder circuit is achieved via a switching element. The switching element is only turned on when the control signal is high in level so as to enable the power feed to the weighted adder circuit. Thus, reduction in power consumption is achieved and the filter can be used in a portable radio device.

摘要翻译： 相关滤波器包括输出具有不同延迟的多个抽头输出信号TP1至TPn的延迟电路。 相关滤波器还包括加权加法器电路，其分别对抽头输出信号进行加权，并将加权抽头输出信号相加，以便导出相关的输出信号。 定时控制电路基于来自加权加法器电路的相关输出信号产生控制信号。 当相关输出信号具有相关峰值时，控制信号电平高。 通过开关元件实现对加权加法器电路的馈电。 当控制信号为高电平时，开关元件仅导通，以使得能够对加权加法器电路进行供电。 因此，实现了功率消耗的降低，并且滤波器可以用在便携式无线电设备中。