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：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：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：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：US06636557B2

公开(公告)日：2003-10-21

申请号：US09947344

申请日：2001-09-07

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： H04B169

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 defects a synchronization phase from high-order small bits of the N bits and outputs synchronozation 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成N位的数字信号的A / D转换器，以及从N位的高阶小位缺陷同步相位的搜索器，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：US06366765B1

公开(公告)日：2002-04-02

申请号：US09276712

申请日：1999-03-26

申请人： Naoki Hongo ,  Tetsuhiko Miyatani ,  Kenzo Urabe ,  Zhou Changming

发明人： Naoki Hongo ,  Tetsuhiko Miyatani ,  Kenzo Urabe ,  Zhou Changming

IPC分类号： H04B118

CPC分类号： H03G3/3078 ,  H03G3/3068 ,  H03J3/08 ,  H04B1/30

摘要： The present invention intends to provide a receiver which receives a signal by switching a plurality of communication systems, wherein a circuit scale is reduced to intend to the miniaturization of a device. The receiver converts a received signal to a base band signal by a local oscillation frequency based on the selected communication system by a mixer, limits a band by an LPF through which signals of all communication systems can pass, performs a band limitation based on the communication system by weighting with a tap coefficient based on the selected communication system to synthesis by a transversal filter, and demodulates a signal by a demodulation system based on the selected communication system by a demodulating unit.

摘要翻译： 本发明旨在提供一种通过切换多个通信系统来接收信号的接收机，其中减小了电路规模以意图使设备的小型化。 接收机通过混频器基于所选择的通信系统将接收到的信号转换为基带信号，通过本地振荡频率，通过所有通信系统的信号可以通过的LPF限制频带，基于通信来执行频带限制 系统，通过基于所选择的通信系统的抽头系数进行加权以通过横向滤波器进行合成，并且由解调单元基于所选择的通信系统由解调系统解调信号。

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：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。