公开(公告)号：US5802078A

公开(公告)日：1998-09-01

申请号：US736260

申请日：1996-10-24

申请人： Kenzo Urabe ,  Giho Makino ,  Syunji Tochihara ,  Yasuhiro Murayama ,  Atsushi Hoshi

发明人： Kenzo Urabe ,  Giho Makino ,  Syunji Tochihara ,  Yasuhiro Murayama ,  Atsushi Hoshi

IPC分类号： H03M13/15 ,  G06F11/00

CPC分类号： H03M13/151 ,  H03M13/159

摘要： There is disclosed an acceptable error detector for error correcting block codes, in which of received syndrome vectors S for the received word vectors Y available from the syndrome generator, the m.sub.e -bit received subsyndromes S(m.sub.e) formed by the same components as those of the m.sub.e -bit representative subsyndromes uniquely corresponding to the vectors of all the acceptable error pattern with error bits equal to or less than the acceptable number e is applied as addresses into the redundant subsyndrome table memory. Since the stored data specified by the input address are (m-m.sub.e)-bit redundant subsyndromes which are supposed to appear in the remaining portion of S(= ) when the number of error bits is equal to or less than e, the remaining (m-m.sub.e)-bit received subsyndromes S(m-m.sub.e) derived from the received word vector Y in the syndrome generator and the (m-m.sub.e)-bit redundant subsyndrome obtained from the redundant subsyndrome table memory are compared with each other by a coincidence detector to detect coincidence or noncoincidence therebetween. By this configuration, it is possible to detect whether the number of error bits in received word is acceptable.

摘要翻译： 公开了一种用于纠错块码的可接受的误差检测器，其中针对从校正子发生器可用的接收到的字向量Y的接收到的校正子向量S中的me位接收到的子信号S（me）由与 唯一对应于错误位等于或小于可接受数e的所有可接受的错误模式的向量唯一对应的me位代表子信号，当错误位数 等于或小于e，从校正子发生器中的接收到的字矢量Y导出的剩余的（m-me）位接收子信号S（m-me）和（m-me）位冗余次级信号S 通过重合检测器将从冗余子综合表存储器获得的m-me进行比较，以检测它们之间的一致性或非一致性。 通过该配置，可以检测接收字中的错误位的数目是否可接受。

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：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：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。

公开(公告)号：US5278944A

公开(公告)日：1994-01-11

申请号：US914848

申请日：1992-07-15

申请人： Seishi Sasaki ,  Masayasu Miyake ,  Kenzo Urabe

发明人： Seishi Sasaki ,  Masayasu Miyake ,  Kenzo Urabe

IPC分类号： G10L11/02 ,  G10L11/04 ,  G10L19/00 ,  G10L19/02 ,  G10L5/00

CPC分类号： G10L19/02 ,  G10L19/09 ,  G10L2025/783

摘要： A speech coding circuit is disclosed, which comprises a PCM encoder for converting an analog input into a digital output, and a speech coder with voice activity detector which encodes the digital output from the PCM encoder into speech coding data and detects whether the analog input is voice active or non-active, for each period, and then outputs a speech detection flag indicating whether the analog input is voice active or non-active. A power comparator compares the power of the analog input with a predetermined power threshold value and outputs a level detection flag indicating voice activity or non-activity, depending on whether the power of the analog input is greater or smaller than the power threshold value. A mode switch receives the level detection flag indicating voice activity or non-activity and applies to the PCM encoder and the speech coder a mode control signal which puts them into an activated mode or a sleep mode.

摘要翻译： 公开了一种语音编码电路，其包括用于将模拟输入转换为数字输出的PCM编码器，以及具有语音活动检测器的语音编码器，其将来自PCM编码器的数字输出编码为语音编码数据，并检测模拟输入是否为 语音激活或非有效，然后输出表示模拟输入是语音有效还是非活动的语音检测标志。 电源比较器将模拟输入的功率与预定功率阈值进行比较，并且根据模拟输入的功率是大于还是小于功率阈值，输出指示语音活动或非活动的电平检测标志。 模式切换器接收指示语音活动或非活动的电平检测标志，并向PCM编码器和语音编码器施加将其置于激活模式或睡眠模式的模式控制信号。

公开(公告)号：US08553560B2

公开(公告)日：2013-10-08

申请号：US10584290

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： H04L12/26

CPC分类号： H04L45/00 ,  H04W40/00 ,  H04W40/10 ,  H04W40/12 ,  H04W40/18 ,  H04W40/22 ,  H04W40/246 ,  H04W40/248 ,  H04W40/26 ,  H04W40/28 ,  H04W40/30 ,  H04W48/16 ,  H04W84/18 ,  Y02D70/1224 ,  Y02D70/124 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/22 ,  Y02D70/30 ,  Y02D70/326 ,  Y02D70/34 ,  Y02D70/39

摘要： A system for efficient routing in a multiple hop wireless communication network comprising a plurality of network nodes is presented. The system acquires quality information indicating link status between the infrastructure nodes. The link quality information is used in a route determination process in the infrastructure nodes using a predictive procedure. The link quality information includes information about a time varying information of the link status. The predictive procedure uses the time varying information of link status, and a router data packets according to the determined route.

摘要翻译： 提出了一种在包括多个网络节点的多跳无线通信网络中高效路由的系统。 系统获取指示基础结构节点之间链路状态的质量信息。 链路质量信息用于使用预测过程的基础结构节点中的路由确定过程。 链路质量信息包括有关链路状态的时变信息的信息。 预测过程根据确定的路由使用链路状态的时变信息和路由器数据包。

公开(公告)号：US08218550B2

公开(公告)日：2012-07-10

申请号：US10584136

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： H04W40/12 ,  H04L45/02 ,  H04W40/18 ,  H04W84/18

摘要： The present invention relates to a method for efficient routing in a multiple hop wireless communication network. The routing method comprise the steps of 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 an appropriate route according to said link status information with respect to traffic content, and routing traffic according to said determined appropriate route.

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。 所述路由方法包括以下步骤：通过获取所述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元素（101），根据所述链路状态信息确定适合的路由 ，以及根据所述确定的适当路由路由业务。